Keyword: status
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MOOAB02 First Results from the Electron Hose Instability Studies in FACET plasma, electron, acceleration, wakefield 43
 
  • E. Adli
    University of Oslo, Oslo, Norway
  • W. An, C.E. Clayton, C. Joshi, K.A. Marsh, W.B. Mori, N. Vafaei-Najafabadi
    UCLA, Los Angeles, California, USA
  • S. Corde, R.J. England, J.T. Frederico, S.J. Gessner, M.J. Hogan, S.Z. Li, M.D. Litos, Z. Wu
    SLAC, Menlo Park, California, USA
  • W. Lu
    TUB, Beijing, People's Republic of China
  • P. Muggli
    MPI, Muenchen, Germany
  
  Funding: This work is supported by the Research Council of Norway and U.S. Department of Energy under contract number DE-AC02-76SF00515.
We present the first results from experimental studies of the electron hose instability in the plasma-wakefield acceleration experiments at FACET. Theory and PIC simulations of an electron beam as it travels through a plasma indicate that hosing may lead to a significant distortion of the transverse phase space. The FACET dump line is equipped with a Cherenkov light based spectrometer which can resolve transverse motion as a function of beam energy. We compare the predictions from simulations and theory to the experimental results obtained. 		 
slides icon Slides MOOAB02 [4.654 MB]  
 
MOPPC012 Reliability and Intervention Management for the LHC controls, radiation, feedback, site 148
 
  • K. Foraz, J.R. Cook, J. Coupard, B. Daudin, J. De Jonghe, F. B. Dos Santos Pedrosa, E.R. Fuentes, C. Garino, K. Golikov, S. Grillot, M.R. Jaekel, P. Sollander
    CERN, Geneva, Switzerland
  
  Since 2010, CERN has entered a mode of continuous operation of the LHC and its injectors, which implies the continuous operation of all the infrastructure and support systems. High reliability of the machines is crucial to meet the physics goals. This high reliability must be accompanied by a fast restart after programmed stops. Since 2010, an important effort has been put in place, to ease the coordination process during the programmed stops and to reinforce the management of the interventions (preparation, approval, follow-up, traceability, closure). This paper describes the difficulties from the first year related to this coordination, and the impact on operation. The tools developed for the management of the interventions, their assets and the effect on the reliability of the LHC will also be presented and discussed.  
 
MOPPD039 Status of the Design of the LBNE Neutrino Beamline target, proton, extraction, shielding 451
 
  • V. Papadimitriou, R. Andrews, M.R. Campbell, A.Z. Chen, S.C. Childress, C.D. Moore
    Fermilab, Batavia, USA
  
  Funding: DE-AC02-07CH11359 with the United States Department of Energy.
The Long Baseline Neutrino Experiment (LBNE) will utilize a neutrino beamline facility located at Fermilab to carry out a compelling research program in neutrino physics. The facility will aim a beam of neutrinos toward a detector placed at the Homestake Mine in South Dakota, about 1300 km away. The neutrinos are produced as follows: First, protons extracted from the MI-10 section of the Main Injector (60-120 GeV) hit a solid target above grade and produce mesons. Then, the charged mesons are focused by a set of focusing horns into a 250 m long decay pipe, towards the far detector. Finally, the mesons that enter the decay pipe decay into neutrinos. The parameters of the facility were determined taking into account several factors including the physics goals, the modeling of the facility, spacial and radiological constraints and the experience gained by operating the NuMI facility at Fermilab. The initial beam power is expected to be ~700 kW, however some of the parameters were chosen to be able to deal with a beam power of 2.3 MW in order to enable the facility to run with an upgraded accelerator complex. We discuss here the status of the design and the associated challenges. 		 
 
MOPPP065 Effects of Geometrical Errors on the Field Quality in a Planar Superconducting Undulator undulator, simulation, photon, electron 708
 
  • J. Bahrdt
    HZB, Berlin, Germany
  • J. Bahrdt, Y. Ivanyushenkov
    ANL, Argonne, USA
  
  Funding: Work supported by U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.
Short-period superconducting undulators are being developed at the Advanced Photon Source (APS). The first test device is being fabricated. It is using a relatively short magnetic structure that will be replaced with a longer magnet in the second device. High quality magnetic field with the phase errors at a level of 2 degrees rms were achieved in the prototype magnets due to very accurate winding of the superconducting coils on the formers machined to about 10-μm precision. Manufacturing meters-long undulator structures to such tolerances would be very difficult or even impossible. It is therefore important to understand the effects of the mechanical tolerances in the coil manufacture process on the quality of the magnetic field. The effects of geometrical errors in the position of a superconducting winding in a planar structure are simulated with the RADIA software package. A field profile of a long non-ideal undulator magnet is then built and analyzed in terms of the first and second field integrals as well as phase errors. The results of the systematic study of the geometrical errors on the field quality are presented in this paper. 		 
 
MOPPP078 Status of the First Planar Superconducting Undulator for the Advanced Photon Source undulator, photon, controls, radiation 744
 
  • Y. Ivanyushenkov, M. Abliz, K.D. Boerste, T.W. Buffington, C.L. Doose, J.D. Fuerst, Q.B. Hasse, M. Kasa, S.H. Kim, R. Kustom, E.R. Moog, D. Skiadopoulos, E. Trakhtenberg, I. Vasserman
    ANL, Argonne, USA
  
  Funding: Work supported by U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.
Superconducting technology offers the possibility of building short-period undulators for synchrotron light sources. Such undulators will deliver higher fluxes at higher photon energies to the light source user community. The Advanced Photon Source (APS) team is building the first superconducting planar undulator to be installed in the APS storage ring. The current status of the project is presented in this paper. 		 
 
MOPPR029 Upgrade of Ionization Profile Monitor (IPM) in the J-PARC 3-GeV RCS electron, ion, vacuum, space-charge 840
 
  • H. Harada, K. Yamamoto, M. Yoshimoto
    JAEA/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken, Japan
  
  Ionization Profile Monitors (IPM) were installed and operated in the J-PARC 3-GeV RCS for the observation of circulating beam profile. In IPM system, ions produced by the beam passing through beam chamber lead to Multi Channel Plate (MCP) by electric field, and the signals from the MCP are observed as the beam profile. The IPM system has an upgrade plan for the optimization of the electric fields. This will be reported the upgrade status of the IPM.  
 
MOPPR036 Correlation Analysis of Beam Diagnostic Measurements in SSRF lattice, diagnostics, feedback, background 858
 
  • Z.C. Chen, Y.B. Leng, Y.B. Yan
    SSRF, Shanghai, People's Republic of China
  • B.P. Wang
    SINAP, Shanghai, People's Republic of China
  
  Funding: Supported by National Natural Science Foundation of China (11075198)
Signals from various probes of the beam diagnostic system in Shanghai Synchrotron Radiation Facility (SSRF) were processed with correlation analysis algorithms. The resulting data allowed us to sort the probes by confidence, which means the stable and accurate signals could be separated from the faulty or noisy ones. And the beam dynamics measurements became electronic instrument free at the same time. This makes it possible to eliminate bad Beam Position Monitors (BPM) from the feedback system, offer a more confident set of beam parameters and estimate useful global information by extracting the relationship between some probes. 		 
 
MOPPR084 Software Development for a CompactRIO-based Wire Scanner Control and Data Acquisition System controls, EPICS, LabView, insertion 987
 
  • J.D. Sedillo, J.D. Gilpatrick, D. Martinez, S. Rodriguez Esparza
    LANL, Los Alamos, New Mexico, USA
  • M.E. Gruchalla
    URS, Albuquerque, New Mexico, USA
  
  Funding: U.S. Department of Energy
The Beam Diagnostics and Instrumentation Team at the Los Alamos Neutron Science Center is developing a wire scanner data acquisition and control system with a National Instrument’s compactRIO at its core. For this application, the compactRIO controller not only requires programming the FPGA and RT computer internal to the compactRIO, but also requires programming a client computer and a touch panel display. This article will summarize the hardware interfaces and describe the software design approach utilized for programming and interfacing the four systems together in order to fulfill the design requirements and promote reliable interoperability. 		 
 
MOPPR094 Preparation for NSLS II Linac to Booster Transport Line Commissioning linac, controls, emittance, booster 1002
 
  • G.M. Wang, M.A. Davidsaver, R.P. Fliller, G. Ganetis, H.-C. Hseuh, Y. Hu, D. Padrazo, T.V. Shaftan, G. Shen, O. Singh, Y. Tian, H. Xu, L. Yang
    BNL, Upton, Long Island, New York, USA
  
  The National Synchrotron Light Source II (NSLS-II) is a state-of-the-art 3-GeV third generation light source currently under construction at Brookhaven National Laboratory. The first part of the Linac to Booster Transport (LBT) line has been installed for the linac commissioning. This part will be used for the linac acceptance test. In this paper, we describe the preparation of the LBT sub-system integration test and the high level applications.  
 
TUOAC03 Status of a Single-Aperture 11 T Nb3Sn Demonstrator Dipole for LHC Upgrades dipole, collimation, magnet-design, lattice 1098
 
  • A.V. Zlobin, N. Andreev, G. Apollinari, E.Z. Barzi, R. Bossert, G. Chlachidze, V. Kashikhin, A. Nobrega, I. Novitski, D. Turrioni, R. Yamada
    Fermilab, Batavia, USA
  • B. Auchmann, M. Karppinen, L. Oberli, L. Rossi, D. Smekens
    CERN, Geneva, Switzerland
  
  Funding: Work is supported by Fermi Research Alliance, LLC, under contract No. DE-AC02-07CH11359 with the U.S. Department of Energy
The planned upgrade of the LHC collimation system includes two additional collimators to be installed in the dispersion suppressor areas of points 2, 3 and 7. The necessary longitudinal space for the collimators could be provided by replacing some 8.33 T NbTi LHC main dipoles with 11 T dipoles based on Nb3Sn superconductor and compatible with the LHC lattice and main systems. To demonstrate t his possibility Fermilab and CERN have started in 2011 a joint R&D program with the goal of building by 2014 a 5.5-m long twin-aperture dipole prototype suitable for installation in the LHC. The first step of this program is the development of a 2-m long single-aperture demonstration dipole with the nominal field of 11 T at the LHC nominal current of ~11.85 kA and 60 mm bore with ~20% margin. This paper describes the design, construction and test results of the single-aperture Nb3Sn demonstrator model for the LHC collimation system upgrade. 		 
slides icon Slides TUOAC03 [5.812 MB]  
 
TUPPR006 Design Progress and Construction Status of SuperKEKB quadrupole, dipole, wiggler, klystron 1822
 
  • H. Koiso, K. Akai, K. Oide
    KEK, Ibaraki, Japan
  
  KEKB operation finished in June 2010, and the upgrade of KEKB to SuperKEKB has commenced. The design luminosity of SuperKEKB is 8×1035cm-2s-1, which is 40 times higher than that of KEKB. The design strategy for SuperKEKB is based on the Nano-Beam Scheme, where the vertical beam sizes of the low-energy positron ring and the high-energy electron ring are squeezed to 50−60 nm at the interaction point with a large Piwinski angle. The beam currents in both rings will be double those in KEKB. Finalizing the design of the interaction region is going on by using precise modeling of beam optics. Dismantling KEKB rings and fabrication of accelerator components for SuperKEKB including magnets, power supplies, and antechamber-type beam pipes have already started. This paper describes design progress and construction status of SuperKEKB.  
 
TUPPR095 Update on Kicker Development for the NGLS kicker, controls, impedance, electron 2053
 
  • G.C. Pappas, S. De Santis, J.E. Galvin, M.V. Orocz, M. Placidi
    LBNL, Berkeley, California, USA
  
  The latest requirements for the Next Generation Light Source (NGLS) beam spreader call for a kicker to deflect a 2.4 GeV electron beam by an angle of 3 mrad over a length of 2 meters. The rise and fall time requirements for the integrated B field are <50 ns, the pulse frequency is up to 100 kHz, and both the inter-pulse and pulse to pulse ripple requirements are <0.01% of full scale. These requirements, along with the basic design of the beam spreader are still evolving, and several magnet types and modulator topologies have been considered. This paper will discuss this evolution as it pertains to the kickers, what the current status is of the R&D effort, and the plan to build a full power prototype system.  
 
WEPPC009 Status of the European XFEL 3.9 GHz system cavity, linac, diagnostics, HOM 2224
 
  • P. Pierini, A. Bosotti, P. Michelato, L. Monaco, R. Paparella, D. Sertore
    INFN/LASA, Segrate (MI), Italy
  • E.R. Harms
    Fermilab, Batavia, USA
  • C. Pagani
    Università degli Studi di Milano & INFN, Segrate, Italy
  • E. Vogel
    DESY, Hamburg, Germany
  
  The injector of the European XFEL will use a third harmonic RF system at 3.9 GHz to flatten the RF curvature after the first accelerating module before the first bunch compression stage. This paper presents qualification tests of the prototype cavities and the status of the activities for the realization of the third harmonic section of the European XFEL towards its commissioning due in 2014.  
 
WEPPC013 Progress of High Gradient Performance in STF 9-cell Cavities at KEK cavity, accelerating-gradient, laser, HOM 2233
 
  • Y. Yamamoto, H. Hayano, E. Kako, S. Noguchi, T. Shishido, K. Watanabe
    KEK, Ibaraki, Japan
  
  Vertical tests for ILC have been carried out since 2008 at KEK-STF. Measured cavities are from MHI#5 to MHI#22 (not yet for MHI#18-#22 at the end of November 2011), and MHI#12, #13 and #17 reached the ILC specification of 0.8x1010 at 35MV/m. The MHI cavity was added into the “qualified vendor” for the cavity yield. These three cavities (#12, #13 and #17) had no defect on every EBW seam of equator, iris and beampipe. On the other hand, the other cavities had a few or several defects on EBW seam. Especially, defect on the EBW seam of the equator is the worst case, and cavity performance is limited “certainly”. MHI#10, #15 and #16 cavities were limited by this kind of defect. As for iris region, MHI#14 had large defect at the iris between cell #8 and #9, and the performance was limited by the heavy field emission with “explosive event”. However, after the locally mechanical grind for this defect, the cavity performance was drastically improved with no field emission at 37MV/m. In this paper, the recent progress of the cavity performance at KEK-STF will be reported with the “detailed” defect analysis.  
 
WEPPC014 Construction and Beam Operation of Capture Cryomodule for Quantum Beam Experiments at KEK-STF cryomodule, cavity, controls, radiation 2236
 
  • Y. Yamamoto
    KEK, Ibaraki, Japan
  
  Construction of capture cryomodule for Quantum Beam Project has started since September, and will be finished by the end of December in 2011 at KEK-STF. Two MHI cavities (MHI-12, -13), which reached ILC specification (0.8x1010 at 35MV/m) at the vertical test, were installed into a short cryomodule with improved input couplers. Slide-Jack tuner was attached at different position (center or end of helium jacket) for each cavity same as S1-Global. From January 2012, this cryomodule will be cooled down to 2K, and the high power test will be started including check of the cavity/coupler/tuner performance, LFD measurement, LFD compensation by Piezo, dynamic loss measurement and so on. From March, the beam operation with the beam current of 10mA and the maximum beam energy of 40MeV, will be started to generate x-rays by collision between electron beam and laser. At this stage, two cavities will be operated at the lower gradient of 15-20MV/m, and the stable operation is crucial. In this report, the test results of various performances at the Quantum Beam Project will be presented in detail.  
 
WEPPD034 Mechanical Design of a High Energy Beam Absorber for the Advanced Superconducting Test Accelerator (ASTA) at Fermilab cryomodule, radiation, electron, neutron 2582
 
  • C.M. Baffes, M.D. Church, J.R. Leibfritz, S.A. Oplt, I.L. Rakhno
    Fermilab, Batavia, USA
  
  Funding: Operated by Fermi Research Alliance, LLC, under Contract No. DE-AC02-07CH11359 with the United States Department of Energy
A high energy beam absorber has been built for the Advanced Superconducting Test Accelerator (ASTA) at Fermilab. In the facility’s initial configuration, an electron beam will be accelerated through 3 TTF-type or ILC-type RF cryomodules to an energy of 750MeV. The electron beam will be directed to one of multiple downstream experimental and diagnostic beam lines and then deposited in one of two beam absorbers. The facility is designed to accommodate up to 6 cryomodules, which would produce a 75kW beam at 1.5GeV; this is the driving design condition for the beam absorbers. The beam absorbers consist of water-cooled graphite, aluminum and copper layers contained in a Helium-filled enclosure. This paper describes the mechanical implementation of the beam absorbers, with a focus on thermal design and analysis. In addition, the potential for radiation-induced degradation of the graphite is discussed. 		 
 
WEPPD039 Status of the Utility System Construction for the 3 GeV TPS Storage Ring storage-ring, booster, controls, power-supply 2597
 
  • J.-C. Chang, W.S. Chan, J.-R. Chen, Y.F. Chiu, Y.-C. Chung, K.C. Kuo, Y.-C. Lin, C.Y. Liu, I. Liu, Z.-D. Tsai, T.-S. Ueng
    NSRRC, Hsinchu, Taiwan
  
  The construction of the utility system for the 3.0 GeV Taiwan Photon Source (TPS) was started in the end of 2009. The utility building for the TPS ring will be completed in the end of 2011. The whole construction of the utility system is scheduled to be completed in the end of 2012. Total budget of this construction is about four million dollars. This utility system presented in this paper includes the electrical power, cooling water, air conditioning, compressed air and fire control systems.  
 
WEPPD040 Power Saving Schemes in the NSRRC controls, synchrotron, synchrotron-radiation, radiation 2600
 
  • J.-C. Chang, Y.F. Chiu, Y.-C. Chung, Y.-C. Lin, C.Y. Liu, Z.-D. Tsai, T.-S. Ueng
    NSRRC, Hsinchu, Taiwan
  
  To cope with increasing power consumption and huge power bill of the Taiwan Photon Source (TPS) in the near future, we have been conducting several power saving schemes in the National Synchrotron Radiation Research Center (NSRRC) for years. This paper illustrates the power saving results and future schemes. The power saving schemes include optimization of chillers operation, power requirement control, air conditioning system improvement, application of heat pump, and the lighting system improvement.  
 
WEPPD046 Design of Machine Protection System for the Taiwan Photon Source EPICS, controls, storage-ring, vacuum 2618
 
  • C.Y. Liao, J. Chen, Y.-S. Cheng, K.T. Hsu, K.H. Hu, C.H. Kuo, D. Lee, C.Y. Wu
    NSRRC, Hsinchu, Taiwan
  
  The Taiwan Photon Source (TPS) is being constructed at the campus of the NSRRC (National Synchrotron Radiation Research Center). In order to prevent damage to accelerator components induced by various events, design of the global machine protection system (MPS) is on-going. The MPS collect interlock and beam dump request from various system, perform decision, transmit dump beam request to RF system. The PLC based system will be used as a slow MPS which can delivery less than 8 msec reaction time. The fast MPS will dependent on event based timing system to deliver response time less than 5 μsec. Trigger signal for post-mortem will also be distributed by the fast MPS. To ensure alive of the system, several self-diagnostics mechanisms include heartbeat and transient capture will be implemented. The MPS architecture, plans and implementation were presented in this report.  
 
WEPPP060 A Robust Transverse Feedback System feedback, kicker, optics, pick-up 2843
 
  • M. Alhumaidi, A.M. Zoubir
    TU Darmstadt, Darmstadt, Germany
  
  Transverse feedback systems use pickups signals to measure the beam instabilities and kickers to correct the beam. The correction signal is calculated according to the transfer matrices between the pickups and the kickers. However, errors due to magnetic field imperfections and magnets misalignments lead to deviations in the transfer matrices from their nominal values, which affects the feedback quality in a negative manner. In this work we address a new concept for robust feedback system against optics errors or uncertainties. A kicker and multiple pickups are used for each transversal direction. We introduce perturbation terms to the transfer matrices between the kicker and the pickups. Consequently, the Extended Kalman Filter is used to estimate the feedback signal and the perturbation terms by means of the measurements from the pickups. Finally results for the heavy ions synchrotron SIS 18 at the GSI are shown.  
 
WEPPP075 Hyper-V Virtualization at ALS High Level Accelerator Control controls, EPICS, monitoring, instrumentation 2885
 
  • C.M. Ikami, T.N. Kellogg, C. Lam, H. Nishimura, G.J. Portmann
    LBNL, Berkeley, California, USA
  
  Funding: Work supported by the U.S. Department of Energy under Contract No. DE-AC02-05CH11231
In an effort to virtualize a windows-based computing infrastructure utilized by the ALS high-level controls system, Microsoft 2008 R2 servers were employed for support of the control room console stations. The Windows 2008 R2 server roles were used to create Hyper-V consoles, streamline console deployment, maintain security updates and other support services behind a secure network filter. In the current phase, the aim is to adopt a cluster-based configuration to provide efficient use of server resources and failover capabilities to multiple virtual machines. The current work will discuss the methods and findings from this study. 		 
 
THPPC005 Design of Magnetic Alloy Resonant System (MARS) Cavity for J-PARC MR cavity, impedance, beam-loading, acceleration 3278
 
  • C. Ohmori, K. Hara, K. Hasegawa, M. Toda, M. Yoshii
    KEK, Ibaraki, Japan
  • M. Nomura, A. Schnase, T. Shimada, F. Tamura, M. Yamamoto
    JAEA/J-PARC, Tokai-mura, Japan
  
  The Magnetic Alloy Resonant System (MARS) cavity is a new type of Magnetic Alloy (MA) cavity using an external energy storage system. It is proposed as a back-up system of the present J-PARC high-Q MA cavity using cut cores. MARS consists of un-cut core loaded wideband MA cavities combined with an energy storage system using high-impedance, FT3L, cut cores. The main cavities are water-cooled and already established at J-PARC RCS. The energy storage system will be relatively high-Q (>100) to be stable under heavy beam loading. It also has a higher impedance than the main cavity and is air-cooled. The design of this cavity system will be presented.  
 
THPPC014 Commissioning Status of the 3 MeV RFQ for the Compact Pulsed Hadron Source (CPHS) at Tsinghua University rfq, proton, vacuum, ion 3305
 
  • Q.Z. Xing, Y.J. Bai, D.T. Bin, J.C. Cai, C. Cheng, L. Du, Q. Du, C. Jiang, Q. Qiang, D. Wang, X.W. Wang, Z.F. Xiong, S.Y. Yang, H.Y. Zhang, S.X. Zheng
    TUB, Beijing, People's Republic of China
  • J.H. Billen
    TechSource, Santa Fe, New Mexico, USA
  • W.Q. Guan, Y. He, J. Li
    NUCTECH, Beijing, People's Republic of China
  • X.L. Guan
    Tsinghua University, Beijing, People's Republic of China
  • J. Stovall
    CERN, Geneva, Switzerland
  • L.M. Young
    AES, Medford, NY, USA
  
  Funding: Work supported by the “985 Project” of the Ministry of Education of China.
We present, in this paper, the commissioning status of a Radio Frequency Quadrupole (RFQ) accelerator for the Compact Pulsed Hadron Source (CPHS) at Tsinghua University. In 2012 the 3-meter-long RFQ will deliver 3 MeV protons to the downstream High Energy Beam Transport (HEBT) with the peak current of 50 mA, pulse length of 0.5 ms and beam duty factor of 2.5%. Braze of the vanes was completed in September, 2011. The final field tuning of the whole cavity was completed in October, 2011. Initial commissioning will be underway at the beginning of 2012. 		 
 
THPPC070 A High Power Test Facility for New 201.25 MHz Power Amplifiers and Components power-supply, controls, DTL, linac 3449
 
  • J.T.M. Lyles, J. Davis, D. Rees, G. M. Sandoval, Jr., A. Steck, D.J. Vigil
    LANL, Los Alamos, New Mexico, USA
  • D. Baca, R.E. Bratton, R.D. Summers
    Compa Industries, Inc., Los Alamos, New Mexico, USA
  • N.W. Brennan
    Texas A&M University, College Station, Texas, USA
  
  Funding: Work supported by the United States Department of Energy, National Nuclear Security Agency, under contract DE-AC52-06NA25396
A new test facility was designed and constructed at Los Alamos Neutron Science Center (LANSCE) for testing a new Thales TH628 Diacrode® final power amplifier and associated driver stages. Anode power requirements for the TH628 are 28 kV DC, with 190 Amperes in millisecond pulses. A 225 uF capacitor bank supplies this current demand, with a crowbar circuit to rapidly discharge 88 kJ of stored energy. Charging current was obtained by re-configuring a 2 MW beam power supply remaining from another project. The power tubes are operated with DC anode voltage, and beam pulsing is done with control grid bias switching at relatively low power. A new Fast Protect and Monitor System was designed to take samples of RF reflected power, anode HV, and various tube currents, with logic outputs to promptly remove high voltages, RF drive and beam pulsing during faults. The entire test system is controlled with a programmable logic controller, for normal startup sequencing, protection against loss of cooling, and operator GUI. This test facility has been used over the past year to test the amplifiers along with high power coaxial components such as hybrid couplers and various water loads. 		 
 
THPPC087 Software Firmware Infrastructure for LLRF4 Based System LLRF, controls, EPICS, low-level-rf 3485
 
  • G. Huang, L.R. Doolittle, C. Serrano
    LBNL, Berkeley, California, USA
  
  LLRF4 is a successfully designed FPGA based low noise llrf signal process board. The board has been used in server accelerator as low level RF control and timing system. The complexity of maintain and support different version of software and firmware increase as the application increase. This paper describe our attempt to abstract the software and firmware layer. In the software side, the infrastructure support original rgui like GUI and also provide EPICS IOC driver. From the firmware side, the infrastructure separate board hardware dependent driver, the common algorithm implementation and project specific DSP, it also reserved the capability to expend to UDP based communication and next generation llrf board.  
 
THPPD008 Status of the PAL-XFEL Undulator System undulator, controls, FEL, dipole 3509
 
  • D.E. Kim, H.S. Han, Y.-G. Jung, H.-G. Lee, W.W. Lee, K.-H. Park, H.S. Suh
    PAL, Pohang, Kyungbuk, Republic of Korea
  • J. Pflüger
    European XFEL GmbH, Hamburg, Germany
  
  Funding: Work supported by POSCO and MEST of Korea.
Pohang Accelerator Laboratory (PAL) is developing 10 GeV, 0.1 nm SASE based FEL for high power, short pulse X-ray coherent photon sources named PAL-XFEL. At the first stage PAL-XFEL needs two undulator lines for photon source. PAL is developing undulator magnetic structure based on EU-XFEL design. The hard Xray undulator features 7.2 mm min magnetic gap, and 5.0 m magnetic length with maximum effective magnetic field larger than 0.908 T to achieve 0.1nm radiation at 10 GeV electron energy. In this report, we discuss the status of the hard X-ray undulator and soft X-ray undulator designs. 		 
 
THPPD040 Quench Protection Analysis of a Single-Aperture 11T Nb3Sn Demonstrator Dipole for LHC Upgrades dipole, simulation, luminosity, quadrupole 3599
 
  • A.V. Zlobin, I. Novitski, R. Yamada
    Fermilab, Batavia, USA
  
  Funding: Work is supported by Fermi Research Alliance, LLC, under contract No. DE-AC02-07CH11359 with the U.S. Department of Energy
The planned upgrade of the LHC collimation system foresees additional collimators to be installed in the dispersion suppressor areas around points 2, 3, and 7. The necessary longitudinal space for the collimators could be provided by replacing some 8.33-T 15-m-long NbTi LHC main dipoles with shorter 11-T Nb3Sn dipoles compatible with the LHC lattice and main systems. To demonstrate this possibility, in 2011 Fermilab and CERN started a joint R&D program with the goal of building by 2014 a 5.5-m-long twin-aperture dipole prototype suitable for installation in the LHC. The first step of this program is the development of a 2-m-long single-aperture demonstration dipole with the nominal field of 11 T at the LHC nominal current of ~11.85 kA and 60-mm bore with ~20% margin. This paper summarizes the results of quench protection analysis of the single-aperture Nb3Sn demonstrator dipole for the LHC collimation system upgrade. 		 
 
THPPD068 Precision sbRIO-based Magnet Power Supply Annunciator and Control Interface for Accelerator Control Systems controls, power-supply, EPICS, monitoring 3668
 
  • S. Cohen, P. Kowalski
    Bira, Albuquerque, New Mexico, USA
  
  Beam physicists require more data and performance information that is commonly provided by the modern switch-mode power supplies installed at these facilities. We describe single-board RIO (sbRIO)-based* power-supply controller that provides the functionality required for integrating these supplies into control and safety systems at these facilities. The unit allows local control and presents a visual representation of the operational status of each power supply, independent digitized read back of power-supply output current, EPICS control via a Channel Access (CA) server, status information and electrical connections to independent and redundant accelerator safety systems.
* National Instruments, Austin, TX, http://www.ni.com/singleboard/ . 		 
 
THPPP009 Automated Execution and Tracking of the LHC Commissioning Tests controls, LabView, collider, hadron 3743
 
  • K. Fuchsberger, V. Baggiolini, M. Galetzka, R. Gorbonosov, M. Pojer, M. Solfaroli Camillocci, M. Zerlauth
    CERN, Geneva, Switzerland
  
  To ensure the correct operation and prevent system failures, which can lead to equipment damage in the worst case, all critical systems in the Large Hadron Collider (LHC), have to be tested thoroughly during dedicated commissioning phases after each intervention. In view of the around 7,000 individual tests to be performed each year after a Christmas stop, a lot of effort was already put into the automation of these tests at the beginning of LHC hardware commissioning in 2005, to assure the dependable execution and analysis of these tests. To further increase the productivity during the commissioning campaigns and to enforce amore consistent workflow, the development of a dedicated testing framework was launched. This new framework is designed to schedule and track the automated tests for all systems of the LHC and will also be extendable, e.g., to beam commissioning tests. This is achieved by re-using different, already existing execution frameworks. In this paper, we outline the motivation for this new framework and the related improvements in the commissioning process. Further, we sketch its design and present first experience from the re-commissioning campaign in early 2012.  
 
THPPP010 LHC Orbit Correction Reproducibility and Related Machine Protection controls, feedback, luminosity, injection 3746
 
  • K. Fuchsberger, T. Baer, R. Schmidt, J. Wenninger
    CERN, Geneva, Switzerland
  
  The Large Hadron Collider (LHC) has an unprecedented nominal stored beam energy of up to 362 MJ per beam. In order to ensure an adequate machine protection by the collimation system, a high reproducibility of the beam position at collimators and special elements like the final focus quadrupoles is essential. This is realized by a combination of manual orbit corrections, feed forward and real time feedback. In order to protect the LHC against inconsistent orbit corrections, which could put the machine in a vulnerable state, a novel software-based interlock system for orbit corrector currents was developed. In this paper, the principle of the new interlock system is described and the reproducibility of the LHC orbit correction is discussed against the background of this system.  
 
THPPP079 Status of J-PARC Main Ring After Recovery from the Great East Japan Earthquake Damage extraction, kicker, injection, proton 3915
 
  • T. Koseki
    KEK, Ibaraki, Japan
  
  The J-PARC facility was heavily damaged by the Great East Japan Earthquake on March 11, 2011. For the Main Ring synchrotron (MR), a few tens of cracks were found in the tunnel and many of them leaked groundwater. Displacements of magnet positions after the earthquake were larger than ±15 mm in horizontal and ±5 mm in vertical. Re-alignment of all the magnets and monitors in the MR were carried out in the autumn 2011. Accelerator study and users operation are plan to resume in December 2011 and January 2012, respectively. During the long shutdown period from March to December of 2011, we made work not only for the recovery from the earthquake damages but also for improvements to increase beam power as follows; replacement of injection kickers, upgrade of the ring collimator section, installation of a new collimator system in the slow extraction sections, two rf-systems, four skew-quadrupoles and three octupoles. In this paper, the recovery work and the improvements made in the shutdown periods are reported. Status of high power beam operation after the long shutdown is also presented in details.  
 
THPPR003 Progresses on !CHAOS Development controls, LabView, diagnostics, ion 3969
 
  • L.G. Foggetta, C. Bisegni, S. Calabrò, P. Ciuffetti, G. Di Pirro, G. Mazzitelli, A. Stecchi
    INFN/LNF, Frascati (Roma), Italy
  • L. Catani, D. Di Giovenale, F. Zani
    INFN-Roma II, Roma, Italy
  
  !CHAOS(Control System based on Highly Abstracted and Open Structure), the new control system architecture proposed by INFN is in development and some parts of it are now under test on the DAØNE and SPARC complexes. Although the main goal of the !CHAOS project remains the accelerator-based research facility proposed for the Cabibbo Lab and the SuperB accelerator, other applications are under study in order to adapt this new design to the needs coming from different fields, with a growing interest from many companies. Recent developments, tests results, potential applications and future project's plans are presented.  
 
THPPR004 Development Status of Data Acquisition System for LIPAc EPICS, controls, target, linac 3972
 
  • H. Takahashi, T. Kojima, T. Narita, H. Sakaki
    Japan Atomic Energy Agency (JAEA), International Fusion Energy Research Center (IFERC), Rokkasho, Kamikita, Aomori, Japan
  • S. Komukai
    Gitec, Hachinohe, Japan
  
  Control System for LIPAc* for IFMIF/EVEDA** realizes the remote control and monitoring and data acquisition by use of EPICS. LIPAc consists of the basic components for IFMIF Accelerator, and the purpose of LIPAc project is engineering validation of these components. Therefore, for the validations of each subsystem performance and the activity of IFMIF Accelerator design, it is very important data obtained by commissioning of LIPAc and each subsystem. To certainly archive the important data for LIPAc and to efficiently search the LIPAc data, for design and validation, we started developing Data Acquisition System (DAC) based on Relational Database (RDB) has been developed. The first design for DAC of LIPAc control system is configured (1) using PostgreSQL for RDB and (2) several RDB for data archiving to ensure the data archive performance and to consider the increasing data amount. In addition, (3) only one RDB for data search is included in DAC and users can search the data via this RDB. In this way, several RDB for DAC can behave only one RDB against users. In this article, the development status of DAC for LIPAc is presented.
* LIPAc: Linear IFMIF Prototype Accelerator
** IFMIF/EVEDA: International Fusion Material Irradiation Facility/Engineering Validation and Engineering Design Activity
 		 
 
THPPR010 Integrate EPICS System with the TLS Control System EPICS, controls, feedback, synchrotron 3984
 
  • Y.-S. Cheng, Y.-T. Chang, J. Chen, P.C. Chiu, K.T. Hsu, K.H. Hu, C.H. Kuo, C.Y. Liao, C.Y. Wu
    NSRRC, Hsinchu, Taiwan
  
  The TLS (Taiwan Light Source) is a third generation of synchrotron light source, and it has been operated since 1993. The TLS control system was developed and implemented by ourselves. The control system of our new project (TPS, Taiwan Photon Source) is developed and based upon the EPICS framework. To earn more experiences on the EPICS usage, some of the TLS newly installed subsystem run EPICS directly. For example, BPM system, bunch-by-bunch feedback system, remote oscilloscope waveform access and so on adapt the EPICS interface to control and monitor. The EDM and Matlab (with LabCA) toolkits are used as EPICS graphical user interface, and it is also operated at the TLS control consoles environment normally. The archive system transaction between the TLS control system format and EPICS PVs (Process Variables) has been implemented for user access with the existing archive viewer. The efforts will be described at this report.  
 
THPPR015 CESR Control System Upgrade to Linux High Availability Cluster controls, monitoring, background, synchrotron 3999
 
  • M.J. Forster, S.E. Ball, L.Y. Bartnik, D.A. Bougie, R.G. Helmke, M.A. Palmer, S.B. Peck, D.S. Riley, R.J. Sholtys, C.R. Strohman
    CLASSE, Ithaca, New York, USA
  
  Funding: Supported by U.S. National Science Foundation, Award PHY-0734867 and Award PHY-1002467, as well as, U.S. Department of Energy, Award DE-FC02-08ER41538.
The Cornell Electron Storage Ring (CESR) accelerator complex is used to support the Cornell High Energy Synchrotron Source (CHESS) x-ray user facility and the CESR Test Accelerator (CESRTA) ILC development program. Several hundred electro-magnetic elements as well as several thousand sensors are controlled and monitored in real-time via a Multi-Port Memory device (MPM). MPM access and control programs have used Hewlett Packard (originally DEC) Alpha and VAX computers running OpenVMS since 1988. Due to the demanding throughput, computational and storage requirements of the CESRTA experimental program, as well as a desire to upgrade to more supportable hardware, we have implemented a new Linux control cluster based on an Infortrend 10 GbE Internet Small Computer System Interface (iSCSI) storage device and the Red Hat Cluster Suite. This paper will describe the hardware and software changes required to upgrade our VMS cluster to a high availability, high performance, Linux control cluster. 		 
 
THPPR028 Telephone Alarm Broadcasting for TPS RF System monitoring, SRF, synchrotron, storage-ring 4026
 
  • Y.-H. Lin, L.-H. Chang, M.H. Chang, L.J. Chen, F.-T. Chung, M.-C. Lin, Ch. Wang, M.-S. Yeh, T.-C. Yu
    NSRRC, Hsinchu, Taiwan
  
  The Taiwan Photon Source (TPS) consists of three 500-MHz RF systems: two sets RF systems with KEKB-type single-cell SRF modules are used for the 3-GeV storage ring, and one with five-cell Petra cavities at room temperature is used for booster synchrotron. To monitor the status of the RF systems and to broadcast the error/alarm messages to the RF guys, we develop a telephone alarm broadcasting system. This introduces the hardware and software structure of the alarm broadcasting system.  
 
THPPR035 Design of Machine Protection System for the PEFP 100MeV Linac linac, proton, EPICS, controls 4047
 
  • K.T. Seol, Y.-S. Cho, J.-H. Jang, D.I. Kim, H.S. Kim, H.-J. Kwon, B.-S. Park, J.Y. Ryu, Y.-G. Song, S.P. Yun
    KAERI, Daejon, Republic of Korea
  
  Funding: * This work is supported by the Ministry of Education, Science and Technology of the Korean Government.
The 100MeV proton linear accelerator of the Proton Engineering Frontier Project (PEFP) has been developed and will be installed in Gyeong-ju site. After the installation, the beam commissioning of the 100MeV linac will be performed in 2012. A machine protection system (MPS) to shut off beam and to protect the 100MeV machine has been designed. Hardwares for an RF interlock, a modulator interlock, beam loss monitors, fast closing valves for vacuum window faults and so on have been manufactured and tested. With a hard-wired protection for a fast interlock, beam should be shut off within a few μs from the faults. The operator interface for MPS has been also designed to monitor and reset the faults easily. The details of the MPS design for the 100MeV machine are presented.