IBIC2016 - List of Keywords (electronics)

Paper	Title	Other Keywords	Page
MOBL02	First Experience with the Standard Diagnostics at the European XFEL Injector	diagnostics, operation, gun, electron	14
	D. Lipka, A. Affeldt, A. Awwad, N. Baboi, B. Barret, B. Beutner, F. Brinker, W. Decking, A. Delfs, M. Drewitsch, O. Frank, C. Gerth, V. Gharibyan, O. Hensler, M. Hoeptner, M. Holz, K.K. Knaack, F. Krivan, I. Krouptchenkov, J. Kruse, G. Kube, B. Lemcke, T. Lensch, J. Liebing, T. Limberg, B. Lorbeer, J. Lund-Nielsen, S.M. Meykopff, B. Michalek, J. Neugebauer, Re. Neumann, Ru. Neumann, D. Nölle, M. Pelzer, G. Petrosyan, Z. Pisarov, P. Pototzki, G. Priebe, K.R. Rehlich, D. Renner, V. Rybnikov, G. Schlesselmann, F. Schmidt-Föhre, M. Scholz, L. Shi, P.A. Smirnov, H. Sokolinski, C. Stechmann, M. Steckel, R. Susen, H. Tiessen, S. Vilcins, T. Wamsat, N. Wentowski, M. Werner, Ch. Wiebers, J. Wilgen, K. Wittenburg, R. Zahn, A. Ziegler DESY, Hamburg, Germany R. Baldinger, R. Ditter, B. Keil, W. Koprek, R. Kramert, G. Marinkovic, M. Roggli, M. Stadler, D.M. Treyer PSI, Villigen PSI, Switzerland A. Ignatenko DESY Zeuthen, Zeuthen, Germany A. Kaukher XFEL. EU, Hamburg, Germany O. Napoly, C. Simon CEA/DSM/IRFU, France
	The injector of the European XFEL is in operation since December 2015. It includes, beside the gun and the accelerating section, containing 1.3 and a 3.9 GHz accelerating module, a variety of standard diagnostics systems specially designed for this facility. With very few exceptions, all types of diagnostics systems are installed in the injector. Therefore the operation of the injector is served to validate and prove the diagnostics characteristics for the complete European XFEL. Most of the standard diagnostics has been available for the start of beam operation and showed the evidence of first beam along the beam line. In the following months the diagnostics has been optimized and used for improvements of beam quality. First operational experiences and results from the standard beam diagnostics in the injector of the European XFEL will be reported in this contribution.
	Slides MOBL02 [5.844 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOBL02
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MOPG07	First Operational Experience with the LHC Diode ORbit and OScillation (DOROS) System	detector, embedded, FPGA, coupling	43
	M. Gąsior, G. Baud, J. Olexa, G. Valentino CERN, Geneva, Switzerland
	The LHC started high-energy operation in 2015 with new tertiary collimators, equipped with beam position monitors embedded in their jaws. The required resolution and stability of the beam orbit measurements linked to these BPMs were addressed by the development of a new Diode ORbit and OScillation (DOROS) system. DOROS converts the short BPM electrode pulses into slowly varying signals by compensated diode detectors, whose output signals can be precisely processed and acquired with 24-bit ADCs. This scheme allows a sub-micrometre orbit resolution to be achieved with robust and relatively simple hardware. The DOROS system is also equipped with dedicated channels optimised for processing beam oscillation signals. Data from these channels can be used to perform betatron coupling and beta-beating measurements. The achieved performance of the DOROS system triggered its installation on the beam position monitors located next to the LHC experiments for testing the system as an option of improving the beam orbit measurement in the most important LHC locations. After introducing the DOROS system, its performance is discussed through both, beam and laboratory measurements.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG07
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MOPG08	Beam Position Monitors for LEReC	electron, ion, pick-up, instrumentation	47
	Z. Sorrell, P. Cerniglia, R.L. Hulsart, K. Mernick, R.J. Michnoff BNL, Upton, Long Island, New York, USA
	Funding: Work supported by Brookhaven Science Associates, LL C under Contract No. DE-AC02-98CH10886 with the U.S. Dept. of Energy The operating parameters for Brookhaven National Laboratory's Low Energy RHIC Electron Cooling (LEReC) project create a unique challenge. To ensure proper beam trajectories for cooling, the relative position between the electron and the ion beam needs to be known to within 50μm. In addition, time of flight needs to be provided for electron beam energy measurement. Various issues have become apparent as testing has progressed, such as mismatches in cable impedance and drifts due to temperature sensitivity. This paper will explore the difficulties related to achieving the level of accuracy required for this system, as well as the potential solutions for these problems.
	Poster MOPG08 [3.304 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG08
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MOPG09	The Orbit Correction Scheme of the New EBS of the ESRF	feedback, controls, storage-ring, sextupole	51
	E. Plouviez, F. Uberto ESRF, Grenoble, France
	The ESRF storage ring is going to be upgraded into an Extremely Bright Source(EBS). The orbit correction system of the EBS ring will require 320 BPMs and 288 correctors instead of 224 BPMs and 96 correctors for the present ring. On the new ring, we are planning to reuse 192 Libera Brilliance electronics and 96 fast correctors power supplies and the 8 FPGA controllers of the present system and to add 128 new BPMs electronics and 196 new correctors power supplies. These new BPM electronics and power supplies will not have the fast 10 KHz data broadcast capability of the components of the present system. So we plan to implement an hybrid slow/ fast correction scheme on the SR of the EBS in order to reuse the present fast orbit correction system on a reduced set of the BPMs and correctors and combine this fast orbit correction with an orbit correction performed at a slower rate using the full set of BPMs and correctors. We have made simulations to predict the efficiency of this scheme for the EBS and tested on the present ring a similar orbit correction scheme using only 160 BPMs and 64 correctors for the fast corrections . We present the results of our simulations and experiments.
	Poster MOPG09 [4.054 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG09
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MOPG13	MicroTCA.4 Based Optical Frontend Readout Electronics and its Applications	feedback, laser, operation, electron	67
	K.P. Przygoda, L. Butkowski, M.K. Czwalinna, H. Dinter, C. Gerth, E. Janas, F. Ludwig, S. Pfeiffer, H. Schlarb, Ch. Schmidt, M. Viti DESY, Hamburg, Germany R. Rybaniec Warsaw University of Technology, Institute of Electronic Systems, Warsaw, Poland
	In the paper the MicroTCA.4 based optical frontend readout (OFR) electronics and its applications for beam arrival time monitor (BAM) and fast beam based feed-back (BBF) is presented. The idea is to have a possibility to monitor the modulation density of the optical laser pulses by the electron bunches and apply this information for the BBF. The OFR composed of double width fast mezzanine card (FMC) and advanced mezzanine card (AMC) based FMC carrier. The FMC module consists of three optical channel inputs (data and clock), two optical channel outputs (beam arrival time), 250 MSPS ADCs, clock generator module (CGM) with integrated 2.8 GHz voltage control oscillator (VCO). The optical signals are detected with 800 MHz InGaAs photodiodes, conditioned using 2 GHz current-feedback amplifiers, filtered by 3.3 GHz differential amplifiers and next direct sampled with 16-bit 900 MHz of analog bandwidth ADCs. The CGM is used to provide clock outputs for the ADCs and for the FMC carrier with additive output jitter of less than 300 fs rms. The BAM application has been implemented using Virtex 5 FPGA and measured with its performance at Free Electron LASer in Hamburg (FLASH) facility.
	Poster MOPG13 [3.991 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG13
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MOPG15	BPM Electronics for the ELBE Linear Accelerator - a Comparison	controls, embedded, pick-up, instrumentation	75
	U. Lehnert, A. Büchner, B. Lange, R. Schurig, R. Steinbrück HZDR, Dresden, Germany
	The ELBE linear accelerator supports a great variety of possible beam options ranging from single bunches to 1.6 mA CW beams at 13 MHz bunch repetition rate. Accordingly high are the dynamic range requirements for the BPM system. Recently, we are testing the Libera Spark EL electronics to supplement our home-built BPM electronics for low repetition rate operation. Here, we discuss the advantages and disadvantages of the two completely different detection schemes. For integration of the Libera Spark EL into our accelerator control system we are implementing an OPC-UA server embedded into the device. The server is based on the free Open62541 protocol stack which is available as open source under the LGPL.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG15
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MOPG21	Development of a Method for Continuous Functional Supervision of BLM Systems	detector, monitoring, high-voltage, operation	90
	C.F. Hajdu, C. Zamantzas CERN, Geneva, Switzerland T. Dabóczi, C.F. Hajdu BUTE, Budapest, Hungary
	It is of vital importance to provide a continuous and comprehensive overview of the functionality of beam loss monitoring (BLM) systems, with particular emphasis on the connectivity and correct operation of the detectors. At CERN, a new BLM system for the pre-accelerators of the LHC is currently at an advanced stage of development. This contribution reports on a new method which aims to automatically and continuously ensure the proper connection and performance of the detectors used in the new BLM system.
	Poster MOPG21 [0.337 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG21
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MOPG25	Industrialisation of Cavity BPMs	cavity, FPGA, simulation, controls	98
	E. Yamakawa, S.T. Boogert, A. Lyapin JAI, Egham, Surrey, United Kingdom S. Syme FMB Oxford, Oxford, United Kingdom
	The industrialisation project of a cavity beam position monitor (CBPM) has been commissioned aiming at providing reliable and economical CBPM systems for future Free Electron Lasers (FEL) and similar linac-based facilities. The first prototype of a CBPM system was built at Versatile Electron Linear Accelerator (VELA) in Daresbury Laboratory. We report on the measurement results from the first prototype of our system at VELA and current developments of CBPMs, down-converter electronics and DAQ system.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-MOPG25
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TUPG04	CERN PS Booster Transverse Damper: 10 kHz - 200 MHz Radiation Tolerant Amplifier for Capacitive PU Signal Conditioning	impedance, radiation, pick-up, linac	315
	A. Meoli, A. Blas, R. Louwerse CERN, Geneva, Switzerland
	After connection to the LINAC4, the beam intensity in the PSBooster is expected to double and thus, an upgrade of the head electronics of the transverse feedback BPM is necessary. In order to cover the beam spectrum for an effective transverse damping, the pickup (PU) signal should have a large bandwidth on both the low and high frequency sides. Furthermore, in order to extend the natural low frequency cut-off from 6MHz (50' load) down to the required 10kHz, with no modification of the existing PUs, a high impedance signal treatment is required. The electronic parts should withstand the radiation dose received during at least a year of service. This constraint implies the installation of the amplifier at a remote location. A solution was found inspired by the technique of oscilloscopes' high impedance probes that mitigates the effect of transmission line mismatch using a lossy coaxial cable with an appropriate passive circuitry. A new large bandwidth, radiation tolerant amplifier has been designed. The system requirements, the analysis, the measurements with the present PUs, the design of the amplifier and the experimental results are described in this contribution.
	Poster TUPG04 [1.030 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG04
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TUPG06	Development Status of a Stable BPM System for the SPring-8 Upgrade	radiation, photon, quadrupole, alignment	322
	H. Maesaka RIKEN SPring-8 Center, Sayo-cho, Sayo-gun, Hyogo, Japan H. Dewa, T. Fujita, M. Masaki, S. Takano JASRI, Hyogo, Japan
	A stable and precise BPM system is necessary for the low-emittance upgrade of SPring-8. Key requirements for the BPM system are: 1) long-term stability to maintain the photon beam direction of the beamline well within the intrinsic photon divergence, 2) single-pass resolution better than 100 μm rms for a 100 pC injected bunch for first turn steering in the beam commissioning, and 3) accuracy better than 100 μm rms with respect to aligned quadrupole and sextupole magnet centers to achieve the design performance of the upgraded ring. To realize the demanded stability, the BPM drift should be reduced to 1 μm level. Therefore, we have been pursuing designs to suppress the thermal deformation of a BPM head and its support and to minimize the drifts of BPM electronics and coaxial cables. The investigation results on causes of drifts of the present SPring-8 BPM system are reflected to the design of the new BPM system. A button-type BPM head has been developed, which can generate sufficient signal to satisfy the required single-pass resolution. We have also been studying the strategies of the alignment, position survey and electric center calibration of the BPM head better than 100 μm. M. Masaki et al., in this conference.
	Poster TUPG06 [5.250 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG06
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TUPG07	Commisioning of Beam Position and Phase Monitors for LIPAc	pick-up, coupling, simulation, vacuum	326
	I. Podadera, A. Guirao, D. Jiménez-Rey, L.M. Martínez, J. Mollá, A. Soleto, R. Varela CIEMAT, Madrid, Spain
	Funding: Work partially supported by the Spanish Ministry of Science and Innovation under project AIC-A-2011-0654 and FIS2013-40860-R The LIPAc accelerator will be a 9 MeV, 125 mA CW deuteron accelerator which aims to validate the technology that will be used in the future IFMIF accelerator. Several types of Beam Position Monitors BPMs- are placed in each section of the accelerator to ensure a good beam transport and minimize beam losses. LIPAc is presently under installation and commissioning of the second acceleration stage at 5 MeV. In this stage two types of BPMs are used: four striplines to control the position at the Medium Energy Beam Transport line (MEBT), and three striplines to precisely measure the mean beam energy at the Diagnostics Plate. The seven pickups have been installed and assembled in the beamlines after characterization in a wire test bench, and are presently been commissioned in the facility. In addition, the in-house acquisition system has been fully developed and tested in the wire test bench at CIEMAT. In this contribution, the results of the beam position monitors characterization, the tests carried out during the assembly and the first measurements with the electronics system will be reported.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG07
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TUPG17	Design and Beam Test Results of the Reentrant Cavity BPM for the European XFEL	cavity, linac, controls, cryomodule	356
	C. Simon, M. Luong, O. Napoly CEA/DSM/IRFU, France N. Baboi, D. Lipka, D. Nölle, G. Petrosyan DESY, Hamburg, Germany R. Baldinger, B. Keil, G. Marinkovic, M. Roggli PSI, Villigen PSI, Switzerland M. Baudrier CEA/DRF/IRFU, Gif-sur-Yvette, France L. Maurice CEA/IRFU, Gif-sur-Yvette, France
	The European X-ray Free Electron Laser (E-XFEL) will use reentrant beam position monitors (BPMs) in about one quarter of the superconducting cryomodules. This BPM is composed of a radiofrequency (RF) reentrant cavity with 4 antennas and an RF signal processing electronics. Hybrid couplers, near the cryomodules, generate the analog sum and difference of the raw pickup signals coming from two pairs of opposite RF feedthroughs. The resulting sum (proportional to bunch charge) and difference signals (proportional to the product of position and charge) are then filtered, down-converted by an RF front-end (RFFE), digitized, and digitally processed on an FPGA board. The task of CEA/Saclay was to cover the design, fabrication and beam tests and deliver these reentrant cavity BPMs for the E-XFEL linac in collaboration with DESY and PSI. This paper gives an overview of the reentrant BPM sys-tem with focus on the last version of the RF front end electronics, signal processing, and overall system performance. Measurement results achieved with prototypes installed at the DESY FLASH2 linac and in the E-XFEL injector are presented.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG17
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TUPG26	COSY BPM Electronics Upgrade	hadron, hardware, synchrotron, experiment	383
	C. Böhme, A.J. Halama, V. Kamerdzhiev FZJ, Jülich, Germany
	The Cooler Synchrotron COSY delivers proton and deuteron beams to the users since the early 90s. The experiments are carried out using the circulating beam as well as the beams extracted from the ring and delivered by three beamlines. The original BPM system still operational in the ring does not fulfill the requirements for new experiments. It utilizes cylindrical and shoe-box type diagonally cut capacitive pick-ups. The most signal processing is done the analog way. Additionally to its age and the increasing failure rate, the analog processing introduces large drifts in e.g. the offset, which regularly require a significant effort for manual calibration. Even then the drifts render it impossible to match the requirements of the planned JEDI experiment, which is an orbit with a maximum of 100 um RMS deviation. Therefore an upgrade of the readout electronics was decided. The decision process is described, the implications listed and the current status is reported.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG26
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TUPG51	Micro Pattern Ionization Chamber with Adaptive Amplifiers as Dose Delivery Monitor for Therapeutic Proton LINAC	proton, linac, cathode, factory	464
	E. Cisbani, A. Carloni, S. Colilli, G. De Angelis, S. Frullani, F. Ghio, F. Giuliani, M. Gricia, M. Lucentini, C. Notaro, F. Santavenere, A. Spurio, G. Vacca ISS, Rome, Italy A. Ampollini, P. Nenzi, L. Picardi, C. Ronsivalle, M. Vadrucci ENEA C.R. Frascati, Frascati (Roma), Italy E. Basile Azienda Ospedaliera Papardo, Messina, Italy D.M. Castelluccio ENEA-Bologna, Bologna, Italy C. Placido University of Rome "La Sapienza", Rome, Italy
	Funding: Regione Lazio: TOP-IMPLART project A dedicated dose delivery monitor is under development for the TOP-IMPLART proton accelerator, the first LINAC for cancer therapy. It is expected to measure the intensity profile to precisely monitor the fully active 3+1D (x/y/z and intensity) dose delivery of each short pulses (few micro-s, 0.1-10 micro-A pulse current at ~100 Hz) of the therapeutic proton beam (up to 230 MeV). The monitor system consists of planar gas chambers operating in ionization regime with cathode plane made ofμpattern pads alternately connected by orthogonal strips. The dedicated readout electronics features trans-impedance amplifier that dynamically adapts its integrating feedback capacitance to the incoming amount of charge, then opportunistically changing its gain. The measured absolute sensitivity is about 100 fC (better than 0.03 relative sensitivity), the dynamic range up to 10000 (2 gain settings) with time response at the level of few ns, and virtually no dead time. Small scale chamber prototype (0.875 mm pitch pads) and readout electronics have been tested and characterized under both electron (5 MeV) and proton (up to 27 MeV) beams. The pad-like design has been adopted to maximize the field uniformity, to reduce the chamber thickness and to obtain both x/y coordinates on a single chamber.
	Poster TUPG51 [3.468 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-TUPG51
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WEPG05	Design of Stripline Beam Position Monitors for the ESS MEBT	impedance, quadrupole, simulation, coupling	620
	S. Varnasseri, I. Bustinduy, A. Ortega, I. Rueda, A. Zugazaga ESS Bilbao, Zamudio, Spain R.A. Baron, H. Hassanzadegan, A. Jansson, T.J. Shea ESS, Lund, Sweden
	There will be overall 8 Beam Position Monitors (BPM) installed in MEBT of ESS. Seven of them will be used for the measurement of beam position, phase and intensity. One BPM will be used for the fast timing characterization of the chopped beam. The design is based on shortened stripline to accommodate the signal level for low velocity proton beam within MEBT read by electronics. Due to mechanical space limits, all the BPMs are embedded inside quadrupoles; which requires special care on the magnetic properties of the materials within BPM sets and in particular the feedthroughs. The prototype electromagnetic and mechanical design is finished and its fabrication is underway. This paper gives an overview of the electromagnetic and mechanical design and related analysis including position signal sensitivity of the BPMs.
	Poster WEPG05 [1.107 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG05
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WEPG11	Operation of the Beam Position Monitor for the Spiral 2 Linac on the Test Bench of the RFQ	linac, operation, diagnostics, rfq	642
	P. Ausset, M. Ben Abdillah, F. Fournier IPN, Orsay, France S.K. Bharade, G. Joshi, P.D. Motiwala BARC, Trombay, Mumbai, India R. Ferdinand, D.T. Touchard GANIL, Caen, France
	The SPIRAL2 project is based on a multi-beam superconducting LINAC designed to accelerate 5 mA deuteron beams up to 40 MeV, proton beams up to 33 MeV and 1 mA light and heavy ions (Q/A = 1/3) up to 14.5 MeV/A. The accurate tuning of the LINAC is essential for the operation of SPIRAL2 and requires measurement of the beam transverse position, the phase of the beam with respect to the radiofrequency voltage, the ellipticity of the beam and the beam energy with the help of Beam Position Monitor (BPM) system. The commissioning of the RFQ gave us the opportunity to install a BPM sensor, associated with its electronics, mounted on a test bench. The test bench is a D-plate fully equipped with a complete set of beam diagnostic equipment in order to characterize as completely as possible the beam delivered by the RFQ and to gain experience with the behavior of these diagnostics under beam operation. This paper addresses the first measurements carried with the BPM on the D-plate: intensity, phase, transverse position and ellipticity under 750 keV proton beam operation
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG11
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WEPG12	A Versatile BPM Signal Processing System Based on the Xilinx Zynq SoC	electron, ion, software, hardware	646
	R.L. Hulsart, P. Cerniglia, N.M. Day, R.J. Michnoff, Z. Sorrell BNL, Upton, Long Island, New York, USA
	Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. A new BPM electronics module (V301) has been developed at BNL that uses the latest System on a Chip (SoC) technologies to provide a system with better performance and lower cost per module than before. The future of RHIC ion runs will include new RF conditions as well as a wider dynamic range in intensity. Plans for the use of electron beams, both in ion cooling applications and a future electron-ion collider, have also driven this architecture toward a highly configurable approach. The RF input section has been designed such that jumpers can be changed to allow a single board to provide ion or electron optimized analog filtering. These channels are sampled with four 14-bit 400MSPS A/D converters. The SoC's ARM processor allows a Linux OS to run directly on the module along with a controls system software interface. The FPGA is used to process samples from the ADCs and perform position calculations. A suite of peripherals including dual Ethernet ports, uSD storage, and an interface to the RHIC timing system are also included. A second revision board which includes ultra-low jitter ADC clock synthesis and distribution and improved power supplies is currently being commissioned.
	Poster WEPG12 [4.839 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG12
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WEPG25	Beam Diagnostics for Charge and Position Measurements in ELI-NP GBS	linac, cavity, electron, diagnostics	682
	G. Franzini, F. Cioeta, O. Coiro, D. Pellegrini, M. Serio, A. Stella, A. Variola INFN/LNF, Frascati (Roma), Italy A. Mostacci, S. Tocci University of Rome La Sapienza, Rome, Italy
	The advanced source of Gamma-ray photons to be built in Bucharest (Romania), as part of the ELI-NP European Research Infrastructure, will generate photons by Compton back-scattering in the collision between a multi-bunch electron beam and a high intensity recirculated laser pulse. An S-Band photoinjector and the following C-band Linac at a maximum energy of 720MeV, under construction by an European consortium (EurogammaS) led by INFN, will operate at 100Hz repetition rate with trains of 32 electron bunches, separated by 16ns and a 250pC nominal charge. The different BPMs and current transformers used to measure transverse beam position and charge along the LINAC are described. Design criteria, production status and bench test results of the charge and position pickups are reported in the paper, together with the related data acquisition systems.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG25
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WEPG31	Upgrades to the LANSCE Isotope Production Facilities Beam Diagnostics	diagnostics, isotope-production, data-acquisition, target	690
	H.A. Watkins, D. Baros, D. Martinez, L. Rybarcyk, J.D. Sedillo, R.A. Valicenti LANL, Los Alamos, New Mexico, USA
	Funding: Work supported by the U.S. Department of Energy. Contract No. DE-AC52-06NA25396 The Los Alamos Neutron Science Center (LANSCE) is currently upgrading the beam diagnostics capability for the Isotope Production Facility (IPF) as part of an Accelerator Improvement Project (AIP). Improvements to measurements of: beam profile, beam energy, beam current and collimator charge are under development. Upgrades include high density harps, emittance slits, wire-scanners, multi-segment adjustable collimator, data acquisition electronics and motion control electronics. These devices will be installed and commissioned for the 2017 run cycle. Details of the hardware design and system development are presented.
	Poster WEPG31 [3.875 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG31
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WEPG39	Measurement Uncertainty Assessments of the SPIRAL2 ACCT/DCCT	controls, linac, rfq, site	712
	S.L. Leloir, T.A. Andre, C. Jamet, G. Ledu, S. Loret, C. Potier de courcy GANIL, Caen, France
	Four instrumentation chains with AC and DC Current Transformers (ACCT-DCCT) will equip the lines of SPIRAL2 facility to measure the beam intensity and line transmissions. These measures are essential to tune and supervise the beam, to assure the thermal protection of the accelerator and to control that the intensities and transmissions are below the authorized limits. As such, the uncertainties of measurement chains must be taken into account in the threshold values. The electronic has been designed with high requirements of quality and dependability by following different steps; from prototyping, the qualification through an Analysis of Failure Modes and Effects Analysis (FMEA) until final fabrication. This paper presents the measurement uncertainty assessments of the ACCT/DCCT chains.
	Poster WEPG39 [0.551 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG39
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THBL01	SiPMs for Beam Instrumentation. Ideas From High Energy Physics	detector, photon, radiation, instrumentation	860
	D. Gascon, D. Ciaglia, G. Fernàndez, R. Graciani, S. Gómez, J. Mauricio, N. Rakotnavalona, A. Sanuy, D. Sánchez UB, Barcelona, Spain
	Silicon Photomultipliers (SiPM) enable fast low-level light detection and even photon counting with a semiconductor device. Thanks to a now matured technology, SiPMs can be used in a variety of applications like: Medical imaging, fluorescence detection, range-finding and high-energy physics. We present different possible application of SiPMs for beam instrumentation. First, we discuss timing properties of SiPMs, and how to optimize them for high rate environments enabling photon counting. This requires to understand the dependence of SiPM pulse shape on its configuration (total area, cell size, capacitances, etc) and analyse dedicated front end electronics techniques. Finally, based on the experience of several projects aiming to develop trackers for high energy physics, we present some ideas to develop beam monitoring instrumentation based scintillating fibers coupled to SiPMs, where radiation hardness of scintillating fibers can be an important concern.
	Slides THBL01 [5.473 MB]
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-THBL01
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MOBL02

First Experience with the Standard Diagnostics at the European XFEL Injector

diagnostics, operation, gun, electron

14

D. Lipka, A. Affeldt, A. Awwad, N. Baboi, B. Barret, B. Beutner, F. Brinker, W. Decking, A. Delfs, M. Drewitsch, O. Frank, C. Gerth, V. Gharibyan, O. Hensler, M. Hoeptner, M. Holz, K.K. Knaack, F. Krivan, I. Krouptchenkov, J. Kruse, G. Kube, B. Lemcke, T. Lensch, J. Liebing, T. Limberg, B. Lorbeer, J. Lund-Nielsen, S.M. Meykopff, B. Michalek, J. Neugebauer, Re. Neumann, Ru. Neumann, D. Nölle, M. Pelzer, G. Petrosyan, Z. Pisarov, P. Pototzki, G. Priebe, K.R. Rehlich, D. Renner, V. Rybnikov, G. Schlesselmann, F. Schmidt-Föhre, M. Scholz, L. Shi, P.A. Smirnov, H. Sokolinski, C. Stechmann, M. Steckel, R. Susen, H. Tiessen, S. Vilcins, T. Wamsat, N. Wentowski, M. Werner, Ch. Wiebers, J. Wilgen, K. Wittenburg, R. Zahn, A. Ziegler
DESY, Hamburg, Germany
R. Baldinger, R. Ditter, B. Keil, W. Koprek, R. Kramert, G. Marinkovic, M. Roggli, M. Stadler, D.M. Treyer
PSI, Villigen PSI, Switzerland
A. Ignatenko
DESY Zeuthen, Zeuthen, Germany
A. Kaukher
XFEL. EU, Hamburg, Germany
O. Napoly, C. Simon
CEA/DSM/IRFU, France

The injector of the European XFEL is in operation since December 2015. It includes, beside the gun and the accelerating section, containing 1.3 and a 3.9 GHz accelerating module, a variety of standard diagnostics systems specially designed for this facility. With very few exceptions, all types of diagnostics systems are installed in the injector. Therefore the operation of the injector is served to validate and prove the diagnostics characteristics for the complete European XFEL. Most of the standard diagnostics has been available for the start of beam operation and showed the evidence of first beam along the beam line. In the following months the diagnostics has been optimized and used for improvements of beam quality. First operational experiences and results from the standard beam diagnostics in the injector of the European XFEL will be reported in this contribution.

Slides MOBL02 [5.844 MB]

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MOPG07

First Operational Experience with the LHC Diode ORbit and OScillation (DOROS) System

detector, embedded, FPGA, coupling

43

M. Gąsior, G. Baud, J. Olexa, G. Valentino
CERN, Geneva, Switzerland

The LHC started high-energy operation in 2015 with new tertiary collimators, equipped with beam position monitors embedded in their jaws. The required resolution and stability of the beam orbit measurements linked to these BPMs were addressed by the development of a new Diode ORbit and OScillation (DOROS) system. DOROS converts the short BPM electrode pulses into slowly varying signals by compensated diode detectors, whose output signals can be precisely processed and acquired with 24-bit ADCs. This scheme allows a sub-micrometre orbit resolution to be achieved with robust and relatively simple hardware. The DOROS system is also equipped with dedicated channels optimised for processing beam oscillation signals. Data from these channels can be used to perform betatron coupling and beta-beating measurements. The achieved performance of the DOROS system triggered its installation on the beam position monitors located next to the LHC experiments for testing the system as an option of improving the beam orbit measurement in the most important LHC locations. After introducing the DOROS system, its performance is discussed through both, beam and laboratory measurements.

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MOPG08

Beam Position Monitors for LEReC

electron, ion, pick-up, instrumentation

47

Z. Sorrell, P. Cerniglia, R.L. Hulsart, K. Mernick, R.J. Michnoff
BNL, Upton, Long Island, New York, USA

Funding: Work supported by Brookhaven Science Associates, LL C under Contract No. DE-AC02-98CH10886 with the U.S. Dept. of Energy
The operating parameters for Brookhaven National Laboratory's Low Energy RHIC Electron Cooling (LEReC) project create a unique challenge. To ensure proper beam trajectories for cooling, the relative position between the electron and the ion beam needs to be known to within 50μm. In addition, time of flight needs to be provided for electron beam energy measurement. Various issues have become apparent as testing has progressed, such as mismatches in cable impedance and drifts due to temperature sensitivity. This paper will explore the difficulties related to achieving the level of accuracy required for this system, as well as the potential solutions for these problems.

Poster MOPG08 [3.304 MB]

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MOPG09

The Orbit Correction Scheme of the New EBS of the ESRF

feedback, controls, storage-ring, sextupole

51

E. Plouviez, F. Uberto
ESRF, Grenoble, France

The ESRF storage ring is going to be upgraded into an Extremely Bright Source(EBS). The orbit correction system of the EBS ring will require 320 BPMs and 288 correctors instead of 224 BPMs and 96 correctors for the present ring. On the new ring, we are planning to reuse 192 Libera Brilliance electronics and 96 fast correctors power supplies and the 8 FPGA controllers of the present system and to add 128 new BPMs electronics and 196 new correctors power supplies. These new BPM electronics and power supplies will not have the fast 10 KHz data broadcast capability of the components of the present system. So we plan to implement an hybrid slow/ fast correction scheme on the SR of the EBS in order to reuse the present fast orbit correction system on a reduced set of the BPMs and correctors and combine this fast orbit correction with an orbit correction performed at a slower rate using the full set of BPMs and correctors. We have made simulations to predict the efficiency of this scheme for the EBS and tested on the present ring a similar orbit correction scheme using only 160 BPMs and 64 correctors for the fast corrections . We present the results of our simulations and experiments.

Poster MOPG09 [4.054 MB]

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MOPG13

MicroTCA.4 Based Optical Frontend Readout Electronics and its Applications

feedback, laser, operation, electron

67

K.P. Przygoda, L. Butkowski, M.K. Czwalinna, H. Dinter, C. Gerth, E. Janas, F. Ludwig, S. Pfeiffer, H. Schlarb, Ch. Schmidt, M. Viti
DESY, Hamburg, Germany
R. Rybaniec
Warsaw University of Technology, Institute of Electronic Systems, Warsaw, Poland

In the paper the MicroTCA.4 based optical frontend readout (OFR) electronics and its applications for beam arrival time monitor (BAM) and fast beam based feed-back (BBF) is presented. The idea is to have a possibility to monitor the modulation density of the optical laser pulses by the electron bunches and apply this information for the BBF. The OFR composed of double width fast mezzanine card (FMC) and advanced mezzanine card (AMC) based FMC carrier. The FMC module consists of three optical channel inputs (data and clock), two optical channel outputs (beam arrival time), 250 MSPS ADCs, clock generator module (CGM) with integrated 2.8 GHz voltage control oscillator (VCO). The optical signals are detected with 800 MHz InGaAs photodiodes, conditioned using 2 GHz current-feedback amplifiers, filtered by 3.3 GHz differential amplifiers and next direct sampled with 16-bit 900 MHz of analog bandwidth ADCs. The CGM is used to provide clock outputs for the ADCs and for the FMC carrier with additive output jitter of less than 300 fs rms. The BAM application has been implemented using Virtex 5 FPGA and measured with its performance at Free Electron LASer in Hamburg (FLASH) facility.

Poster MOPG13 [3.991 MB]

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MOPG15

BPM Electronics for the ELBE Linear Accelerator - a Comparison

controls, embedded, pick-up, instrumentation

75

U. Lehnert, A. Büchner, B. Lange, R. Schurig, R. Steinbrück
HZDR, Dresden, Germany

The ELBE linear accelerator supports a great variety of possible beam options ranging from single bunches to 1.6 mA CW beams at 13 MHz bunch repetition rate. Accordingly high are the dynamic range requirements for the BPM system. Recently, we are testing the Libera Spark EL electronics to supplement our home-built BPM electronics for low repetition rate operation. Here, we discuss the advantages and disadvantages of the two completely different detection schemes. For integration of the Libera Spark EL into our accelerator control system we are implementing an OPC-UA server embedded into the device. The server is based on the free Open62541 protocol stack which is available as open source under the LGPL.

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MOPG21

Development of a Method for Continuous Functional Supervision of BLM Systems

detector, monitoring, high-voltage, operation

90

C.F. Hajdu, C. Zamantzas
CERN, Geneva, Switzerland
T. Dabóczi, C.F. Hajdu
BUTE, Budapest, Hungary

It is of vital importance to provide a continuous and comprehensive overview of the functionality of beam loss monitoring (BLM) systems, with particular emphasis on the connectivity and correct operation of the detectors. At CERN, a new BLM system for the pre-accelerators of the LHC is currently at an advanced stage of development. This contribution reports on a new method which aims to automatically and continuously ensure the proper connection and performance of the detectors used in the new BLM system.

Poster MOPG21 [0.337 MB]

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MOPG25

Industrialisation of Cavity BPMs

cavity, FPGA, simulation, controls

98

E. Yamakawa, S.T. Boogert, A. Lyapin
JAI, Egham, Surrey, United Kingdom
S. Syme
FMB Oxford, Oxford, United Kingdom

The industrialisation project of a cavity beam position monitor (CBPM) has been commissioned aiming at providing reliable and economical CBPM systems for future Free Electron Lasers (FEL) and similar linac-based facilities. The first prototype of a CBPM system was built at Versatile Electron Linear Accelerator (VELA) in Daresbury Laboratory. We report on the measurement results from the first prototype of our system at VELA and current developments of CBPMs, down-converter electronics and DAQ system.

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TUPG04

CERN PS Booster Transverse Damper: 10 kHz - 200 MHz Radiation Tolerant Amplifier for Capacitive PU Signal Conditioning

impedance, radiation, pick-up, linac

315

A. Meoli, A. Blas, R. Louwerse
CERN, Geneva, Switzerland

After connection to the LINAC4, the beam intensity in the PSBooster is expected to double and thus, an upgrade of the head electronics of the transverse feedback BPM is necessary. In order to cover the beam spectrum for an effective transverse damping, the pickup (PU) signal should have a large bandwidth on both the low and high frequency sides. Furthermore, in order to extend the natural low frequency cut-off from 6MHz (50' load) down to the required 10kHz, with no modification of the existing PUs, a high impedance signal treatment is required. The electronic parts should withstand the radiation dose received during at least a year of service. This constraint implies the installation of the amplifier at a remote location. A solution was found inspired by the technique of oscilloscopes' high impedance probes that mitigates the effect of transmission line mismatch using a lossy coaxial cable with an appropriate passive circuitry. A new large bandwidth, radiation tolerant amplifier has been designed. The system requirements, the analysis, the measurements with the present PUs, the design of the amplifier and the experimental results are described in this contribution.

Poster TUPG04 [1.030 MB]

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TUPG06

Development Status of a Stable BPM System for the SPring-8 Upgrade

radiation, photon, quadrupole, alignment

322

H. Maesaka
RIKEN SPring-8 Center, Sayo-cho, Sayo-gun, Hyogo, Japan
H. Dewa, T. Fujita, M. Masaki, S. Takano
JASRI, Hyogo, Japan

A stable and precise BPM system is necessary for the low-emittance upgrade of SPring-8. Key requirements for the BPM system are: 1) long-term stability to maintain the photon beam direction of the beamline well within the intrinsic photon divergence, 2) single-pass resolution better than 100 μm rms for a 100 pC injected bunch for first turn steering in the beam commissioning, and 3) accuracy better than 100 μm rms with respect to aligned quadrupole and sextupole magnet centers to achieve the design performance of the upgraded ring. To realize the demanded stability, the BPM drift should be reduced to 1 μm level. Therefore, we have been pursuing designs to suppress the thermal deformation of a BPM head and its support and to minimize the drifts of BPM electronics and coaxial cables. The investigation results on causes of drifts of the present SPring-8 BPM system are reflected to the design of the new BPM system. A button-type BPM head has been developed*, which can generate sufficient signal to satisfy the required single-pass resolution. We have also been studying the strategies of the alignment, position survey and electric center calibration of the BPM head better than 100 μm.
* M. Masaki et al., in this conference.

Poster TUPG06 [5.250 MB]

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TUPG07

Commisioning of Beam Position and Phase Monitors for LIPAc

pick-up, coupling, simulation, vacuum

326

I. Podadera, A. Guirao, D. Jiménez-Rey, L.M. Martínez, J. Mollá, A. Soleto, R. Varela
CIEMAT, Madrid, Spain

Funding: Work partially supported by the Spanish Ministry of Science and Innovation under project AIC-A-2011-0654 and FIS2013-40860-R
The LIPAc accelerator will be a 9 MeV, 125 mA CW deuteron accelerator which aims to validate the technology that will be used in the future IFMIF accelerator. Several types of Beam Position Monitors BPMs- are placed in each section of the accelerator to ensure a good beam transport and minimize beam losses. LIPAc is presently under installation and commissioning of the second acceleration stage at 5 MeV. In this stage two types of BPMs are used: four striplines to control the position at the Medium Energy Beam Transport line (MEBT), and three striplines to precisely measure the mean beam energy at the Diagnostics Plate. The seven pickups have been installed and assembled in the beamlines after characterization in a wire test bench, and are presently been commissioned in the facility. In addition, the in-house acquisition system has been fully developed and tested in the wire test bench at CIEMAT. In this contribution, the results of the beam position monitors characterization, the tests carried out during the assembly and the first measurements with the electronics system will be reported.

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TUPG17

Design and Beam Test Results of the Reentrant Cavity BPM for the European XFEL

cavity, linac, controls, cryomodule

356

C. Simon, M. Luong, O. Napoly
CEA/DSM/IRFU, France
N. Baboi, D. Lipka, D. Nölle, G. Petrosyan
DESY, Hamburg, Germany
R. Baldinger, B. Keil, G. Marinkovic, M. Roggli
PSI, Villigen PSI, Switzerland
M. Baudrier
CEA/DRF/IRFU, Gif-sur-Yvette, France
L. Maurice
CEA/IRFU, Gif-sur-Yvette, France

The European X-ray Free Electron Laser (E-XFEL) will use reentrant beam position monitors (BPMs) in about one quarter of the superconducting cryomodules. This BPM is composed of a radiofrequency (RF) reentrant cavity with 4 antennas and an RF signal processing electronics. Hybrid couplers, near the cryomodules, generate the analog sum and difference of the raw pickup signals coming from two pairs of opposite RF feedthroughs. The resulting sum (proportional to bunch charge) and difference signals (proportional to the product of position and charge) are then filtered, down-converted by an RF front-end (RFFE), digitized, and digitally processed on an FPGA board. The task of CEA/Saclay was to cover the design, fabrication and beam tests and deliver these reentrant cavity BPMs for the E-XFEL linac in collaboration with DESY and PSI. This paper gives an overview of the reentrant BPM sys-tem with focus on the last version of the RF front end electronics, signal processing, and overall system performance. Measurement results achieved with prototypes installed at the DESY FLASH2 linac and in the E-XFEL injector are presented.

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TUPG26

COSY BPM Electronics Upgrade

hadron, hardware, synchrotron, experiment

383

C. Böhme, A.J. Halama, V. Kamerdzhiev
FZJ, Jülich, Germany

The Cooler Synchrotron COSY delivers proton and deuteron beams to the users since the early 90s. The experiments are carried out using the circulating beam as well as the beams extracted from the ring and delivered by three beamlines. The original BPM system still operational in the ring does not fulfill the requirements for new experiments. It utilizes cylindrical and shoe-box type diagonally cut capacitive pick-ups. The most signal processing is done the analog way. Additionally to its age and the increasing failure rate, the analog processing introduces large drifts in e.g. the offset, which regularly require a significant effort for manual calibration. Even then the drifts render it impossible to match the requirements of the planned JEDI experiment, which is an orbit with a maximum of 100 um RMS deviation. Therefore an upgrade of the readout electronics was decided. The decision process is described, the implications listed and the current status is reported.

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TUPG51

Micro Pattern Ionization Chamber with Adaptive Amplifiers as Dose Delivery Monitor for Therapeutic Proton LINAC

proton, linac, cathode, factory

464

E. Cisbani, A. Carloni, S. Colilli, G. De Angelis, S. Frullani, F. Ghio, F. Giuliani, M. Gricia, M. Lucentini, C. Notaro, F. Santavenere, A. Spurio, G. Vacca
ISS, Rome, Italy
A. Ampollini, P. Nenzi, L. Picardi, C. Ronsivalle, M. Vadrucci
ENEA C.R. Frascati, Frascati (Roma), Italy
E. Basile
Azienda Ospedaliera Papardo, Messina, Italy
D.M. Castelluccio
ENEA-Bologna, Bologna, Italy
C. Placido
University of Rome "La Sapienza", Rome, Italy

Funding: Regione Lazio: TOP-IMPLART project
A dedicated dose delivery monitor is under development for the TOP-IMPLART proton accelerator, the first LINAC for cancer therapy. It is expected to measure the intensity profile to precisely monitor the fully active 3+1D (x/y/z and intensity) dose delivery of each short pulses (few micro-s, 0.1-10 micro-A pulse current at ~100 Hz) of the therapeutic proton beam (up to 230 MeV). The monitor system consists of planar gas chambers operating in ionization regime with cathode plane made ofμpattern pads alternately connected by orthogonal strips*. The dedicated readout electronics features trans-impedance amplifier that dynamically adapts its integrating feedback capacitance to the incoming amount of charge, then opportunistically changing its gain. The measured absolute sensitivity is about 100 fC (better than 0.03 relative sensitivity), the dynamic range up to 10000 (2 gain settings) with time response at the level of few ns, and virtually no dead time. Small scale chamber prototype (0.875 mm pitch pads) and readout electronics have been tested and characterized under both electron (5 MeV) and proton (up to 27 MeV) beams.
* The pad-like design has been adopted to maximize the field uniformity, to reduce the chamber thickness and to obtain both x/y coordinates on a single chamber.

Poster TUPG51 [3.468 MB]

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WEPG05

Design of Stripline Beam Position Monitors for the ESS MEBT

impedance, quadrupole, simulation, coupling

620

S. Varnasseri, I. Bustinduy, A. Ortega, I. Rueda, A. Zugazaga
ESS Bilbao, Zamudio, Spain
R.A. Baron, H. Hassanzadegan, A. Jansson, T.J. Shea
ESS, Lund, Sweden

There will be overall 8 Beam Position Monitors (BPM) installed in MEBT of ESS. Seven of them will be used for the measurement of beam position, phase and intensity. One BPM will be used for the fast timing characterization of the chopped beam. The design is based on shortened stripline to accommodate the signal level for low velocity proton beam within MEBT read by electronics. Due to mechanical space limits, all the BPMs are embedded inside quadrupoles; which requires special care on the magnetic properties of the materials within BPM sets and in particular the feedthroughs. The prototype electromagnetic and mechanical design is finished and its fabrication is underway. This paper gives an overview of the electromagnetic and mechanical design and related analysis including position signal sensitivity of the BPMs.

Poster WEPG05 [1.107 MB]

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WEPG11

Operation of the Beam Position Monitor for the Spiral 2 Linac on the Test Bench of the RFQ

linac, operation, diagnostics, rfq

642

P. Ausset, M. Ben Abdillah, F. Fournier
IPN, Orsay, France
S.K. Bharade, G. Joshi, P.D. Motiwala
BARC, Trombay, Mumbai, India
R. Ferdinand, D.T. Touchard
GANIL, Caen, France

The SPIRAL2 project is based on a multi-beam superconducting LINAC designed to accelerate 5 mA deuteron beams up to 40 MeV, proton beams up to 33 MeV and 1 mA light and heavy ions (Q/A = 1/3) up to 14.5 MeV/A. The accurate tuning of the LINAC is essential for the operation of SPIRAL2 and requires measurement of the beam transverse position, the phase of the beam with respect to the radiofrequency voltage, the ellipticity of the beam and the beam energy with the help of Beam Position Monitor (BPM) system. The commissioning of the RFQ gave us the opportunity to install a BPM sensor, associated with its electronics, mounted on a test bench. The test bench is a D-plate fully equipped with a complete set of beam diagnostic equipment in order to characterize as completely as possible the beam delivered by the RFQ and to gain experience with the behavior of these diagnostics under beam operation. This paper addresses the first measurements carried with the BPM on the D-plate: intensity, phase, transverse position and ellipticity under 750 keV proton beam operation

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WEPG12

A Versatile BPM Signal Processing System Based on the Xilinx Zynq SoC

electron, ion, software, hardware

646

R.L. Hulsart, P. Cerniglia, N.M. Day, R.J. Michnoff, Z. Sorrell
BNL, Upton, Long Island, New York, USA

Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy.
A new BPM electronics module (V301) has been developed at BNL that uses the latest System on a Chip (SoC) technologies to provide a system with better performance and lower cost per module than before. The future of RHIC ion runs will include new RF conditions as well as a wider dynamic range in intensity. Plans for the use of electron beams, both in ion cooling applications and a future electron-ion collider, have also driven this architecture toward a highly configurable approach. The RF input section has been designed such that jumpers can be changed to allow a single board to provide ion or electron optimized analog filtering. These channels are sampled with four 14-bit 400MSPS A/D converters. The SoC's ARM processor allows a Linux OS to run directly on the module along with a controls system software interface. The FPGA is used to process samples from the ADCs and perform position calculations. A suite of peripherals including dual Ethernet ports, uSD storage, and an interface to the RHIC timing system are also included. A second revision board which includes ultra-low jitter ADC clock synthesis and distribution and improved power supplies is currently being commissioned.

Poster WEPG12 [4.839 MB]

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WEPG25

Beam Diagnostics for Charge and Position Measurements in ELI-NP GBS

linac, cavity, electron, diagnostics

682

G. Franzini, F. Cioeta, O. Coiro, D. Pellegrini, M. Serio, A. Stella, A. Variola
INFN/LNF, Frascati (Roma), Italy
A. Mostacci, S. Tocci
University of Rome La Sapienza, Rome, Italy

The advanced source of Gamma-ray photons to be built in Bucharest (Romania), as part of the ELI-NP European Research Infrastructure, will generate photons by Compton back-scattering in the collision between a multi-bunch electron beam and a high intensity recirculated laser pulse. An S-Band photoinjector and the following C-band Linac at a maximum energy of 720MeV, under construction by an European consortium (EurogammaS) led by INFN, will operate at 100Hz repetition rate with trains of 32 electron bunches, separated by 16ns and a 250pC nominal charge. The different BPMs and current transformers used to measure transverse beam position and charge along the LINAC are described. Design criteria, production status and bench test results of the charge and position pickups are reported in the paper, together with the related data acquisition systems.

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WEPG31

Upgrades to the LANSCE Isotope Production Facilities Beam Diagnostics

diagnostics, isotope-production, data-acquisition, target

690

H.A. Watkins, D. Baros, D. Martinez, L. Rybarcyk, J.D. Sedillo, R.A. Valicenti
LANL, Los Alamos, New Mexico, USA

Funding: Work supported by the U.S. Department of Energy. Contract No. DE-AC52-06NA25396
The Los Alamos Neutron Science Center (LANSCE) is currently upgrading the beam diagnostics capability for the Isotope Production Facility (IPF) as part of an Accelerator Improvement Project (AIP). Improvements to measurements of: beam profile, beam energy, beam current and collimator charge are under development. Upgrades include high density harps, emittance slits, wire-scanners, multi-segment adjustable collimator, data acquisition electronics and motion control electronics. These devices will be installed and commissioned for the 2017 run cycle. Details of the hardware design and system development are presented.

Poster WEPG31 [3.875 MB]

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reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG31

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WEPG39

Measurement Uncertainty Assessments of the SPIRAL2 ACCT/DCCT

controls, linac, rfq, site

712

S.L. Leloir, T.A. Andre, C. Jamet, G. Ledu, S. Loret, C. Potier de courcy
GANIL, Caen, France

Four instrumentation chains with AC and DC Current Transformers (ACCT-DCCT) will equip the lines of SPIRAL2 facility to measure the beam intensity and line transmissions. These measures are essential to tune and supervise the beam, to assure the thermal protection of the accelerator and to control that the intensities and transmissions are below the authorized limits. As such, the uncertainties of measurement chains must be taken into account in the threshold values. The electronic has been designed with high requirements of quality and dependability by following different steps; from prototyping, the qualification through an Analysis of Failure Modes and Effects Analysis (FMEA) until final fabrication. This paper presents the measurement uncertainty assessments of the ACCT/DCCT chains.

Poster WEPG39 [0.551 MB]

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reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-WEPG39

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THBL01

SiPMs for Beam Instrumentation. Ideas From High Energy Physics

detector, photon, radiation, instrumentation

860

D. Gascon, D. Ciaglia, G. Fernàndez, R. Graciani, S. Gómez, J. Mauricio, N. Rakotnavalona, A. Sanuy, D. Sánchez
UB, Barcelona, Spain

Silicon Photomultipliers (SiPM) enable fast low-level light detection and even photon counting with a semiconductor device. Thanks to a now matured technology, SiPMs can be used in a variety of applications like: Medical imaging, fluorescence detection, range-finding and high-energy physics. We present different possible application of SiPMs for beam instrumentation. First, we discuss timing properties of SiPMs, and how to optimize them for high rate environments enabling photon counting. This requires to understand the dependence of SiPM pulse shape on its configuration (total area, cell size, capacitances, etc) and analyse dedicated front end electronics techniques. Finally, based on the experience of several projects aiming to develop trackers for high energy physics, we present some ideas to develop beam monitoring instrumentation based scintillating fibers coupled to SiPMs, where radiation hardness of scintillating fibers can be an important concern.

Slides THBL01 [5.473 MB]

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reference for this paper ※ DOI:10.18429/JACoW-IBIC2016-THBL01

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