IBIC2012 - List of Keywords (software)

Paper	Title	Other Keywords	Page
MOPA06	VIMOS, New Capabilities for an Optical Safety System	target, proton, diagnostics, radiation	57
	K. Thomsen, J. Devlaminck PSI, Villigen PSI, Switzerland
	VIMOS is a dedicated safety system developed at the Spallation Neutron Source SINQ at the Paul Scherrer Institut, PSI, in Switzerland. VIMOS very directly monitors the correct current density distribution of the proton beam on the target by sampling the light emitted from a glowing mesh heated by the passing protons. The design has been optimized for obtaining maximum sensitivity and timely detection of beam irregularities relying on standard well-proven components. Recently it has been demonstrated that technical boundary conditions like radiation level and signal strength should allow for upgrading the system to a sensitive diagnostic device delivering quantitative and image-resolved values for the proton current density distribution on the SINQ target. By determining the temperature of the glowing mesh from the signals in two separate wavelength bands the temperature distribution over the mesh can be derived und subsequently the incident proton beam current density distribution. Work aimed at investigating the feasibility of adding these diagnostic abilities to VIMOS shows initial promising results. The status of the project and preliminary findings will be reported.

MOPA34	Improvement of Hardware and Software Setup for the Acquisition and Processing of SIAM Photon Source BPM Signal	storage-ring, photon, PLC, feedback	130
	N. Suradet, S. Boonsuya, S. Klinkhieo, P. Klysubun, S. Krainara, C.P. Preecha, P. Sudmuang SLRI, Nakhon Ratchasima, Thailand
	Data acquisition and processing system has been developed for the Siam Photon Source storage ring BPM system in order to improve monitoring and logging performances. BPM readout, i.e. scanning of BPM electrode voltage outputs and subsequently converting to X-Y position values, is now performed by an upgraded Programmable Logic Controller (PLC) with higher bit resolution (16-bit) analog-to-digital converter (ADC). Moving averaging is then performed on the obtained BPM data utilizing a LabVIEW code to reduce background noise during on-line measurement. All data is then stored on a dedicated computer serving as a central data logging system, which can be remotely accessed via a network communication link. In this report, details of the new setup will be presented, and comparison will be made between the performance of the new and previous setups, together with suggestions on further improvements.

MOPA38	Development of the System for Longitudinal Coupled Bunch Modes Measurement at Indus-2	synchrotron, damping, wakefield, interface	146
	S. Yadav, A.C. Holikatti, C.P. Navathe, A. Ojha, T.A. Puntambekar, Y. Tyagi RRCAT, Indore (M.P.), India
	In a circular accelerator, beam instabilities are intensity-dependent collective effects that arise because of the electromagnetic wake fields generated by the beam as it interacts with its environment. These instabilities limit the high current operation in the accelerator and degrade the performance of synchrotron radiation beam. Indus-2 is a synchrotron radiation source at RRCAT, Indore having design beam current of 300 mA and 2.5 GeV beam energy. Beam intensity signal obtained from wall current monitor (WCM) is used to measure the longitudinal coupled bunch modes (CBM). To study the beam instabilities, an automated software has been developed which acquires the beam intensity spectrum for measurement of coupled bunch modes. The software has option of complete CBM scan, scanning near the significant RF cavity higher order modes (HOM) and scanning of user-selected modes. The scanning time for complete 291 modes is ~5 minutes. In this paper, we describe the measurement system, features of the developed software and some measurement results on Indus-2 machine.

MOPB63	Emittance Measurement using X-ray Beam Profile Monitor at KEK-ATF	emittance, controls, damping, electron	215
	T. Naito, H. Hayano, K. Kubo, S. Kuroda, N. Nakamura, T. Okugi, H. Sakai, N. Terunuma, J. Urakawa KEK, Ibaraki, Japan
	The X-ray profile monitor (XPM) is used for the beam size measurement in the KEK-ATF damping ring(ATF-DR) at all times. The XPM consists of a crystal monochromator, two Fresnel zone plates(FZPs) and X-ray CCD camera. Two FZPs make the imaging optics. The design resolution of the selected wavelength 3.8nm is less than 1μm, which is sufficiently small for the emittance measurement of the ATF-DR. However, the measured results at the early stage were affected by the mechanical vibration. This paper describes the improvement of the resolution and the measurement results.

TUPA11	SSRF BPM System Optimization and Upgrade	brilliance, electron, closed-orbit, injection	355
	Y.B. Yan, Y.B. Leng SSRF, Shanghai, People's Republic of China L.Y. Yu, W.M. Zhou SINAP, Shanghai, People's Republic of China
	The beam position monitor (BPM) system at SSRF was fully equipped with Libera Electrons. It have operated steadily for nearly five years. During the summer shutdown of 2012 more than 50 Libera Electrons were upgraded to Libera Brilliance which are used mainly for fast obit feedback system. The software of whole system is upgraded from 1.42 to 2.07. Some other hardware and software optimizations are carried out. After this upgrade, the stability and performance have been improved significantly. This paper introduces the details of the optimization and upgrade.

TUPA30	Development of a Beam Loss Measurement System with Gigabit Ethernet Readout at CERN	Ethernet, FPGA, network, monitoring	414
	M. Kwiatkowski, M. Alsdorf, E. Angelogiannopoulos, B. Dehning, S. Jackson, W. Viganò, C. Zamantzas CERN, Geneva, Switzerland
	The aim of the BLM Dual Polarity card under development at the European Organisation for Nuclear Research (CERN) is to measure and digitise with high precision the current produced by several types of beam loss detectors. In its default configuration, it is expected to provide data to the processing electronics through two point-to-point connections with bidirectional multi-gigabit optical links. For the development phases as well as later serving as a stand-alone measurement system, its reconfigurable FPGA device is exploited to provide a soft-core CPU with a custom made server. This server, running on the CPU, will expose through the Gigabit Ethernet connection and the TCP/IP protocol different types of data in the network. In this paper the development of the system and of the communication protocol is explored as well as the accompanying client application that is realised with the purpose of commanding, collecting storing and viewing the different types of data.

THCB02	Twisting Wire Scanner	vacuum, feedback, controls, monitoring	607
	V. Gharibyan, A. Delfs, I. Krouptchenkov, D. Nölle, H. Tiessen, M. Werner, K. Wittenburg DESY, Hamburg, Germany
	A new type of 'two-in-one' wire scanner is proposed. Recent advances in linear motors' technology make it possible to combine translational and rotational movements. This will allow to scan the beam in two perpendicular directions using a single driving motor and a special fork attached to it. Vertical or horizontal mounting will help to escape problems associated with the 45 deg scanners. Test results of the translational part with linear motors will be presented.
	Slides THCB02 [5.591 MB]

Paper

Title

Other Keywords

Page

MOPA06

VIMOS, New Capabilities for an Optical Safety System

target, proton, diagnostics, radiation

57

K. Thomsen, J. Devlaminck
PSI, Villigen PSI, Switzerland

VIMOS is a dedicated safety system developed at the Spallation Neutron Source SINQ at the Paul Scherrer Institut, PSI, in Switzerland. VIMOS very directly monitors the correct current density distribution of the proton beam on the target by sampling the light emitted from a glowing mesh heated by the passing protons. The design has been optimized for obtaining maximum sensitivity and timely detection of beam irregularities relying on standard well-proven components. Recently it has been demonstrated that technical boundary conditions like radiation level and signal strength should allow for upgrading the system to a sensitive diagnostic device delivering quantitative and image-resolved values for the proton current density distribution on the SINQ target. By determining the temperature of the glowing mesh from the signals in two separate wavelength bands the temperature distribution over the mesh can be derived und subsequently the incident proton beam current density distribution. Work aimed at investigating the feasibility of adding these diagnostic abilities to VIMOS shows initial promising results. The status of the project and preliminary findings will be reported.

MOPA34

Improvement of Hardware and Software Setup for the Acquisition and Processing of SIAM Photon Source BPM Signal

storage-ring, photon, PLC, feedback

130

N. Suradet, S. Boonsuya, S. Klinkhieo, P. Klysubun, S. Krainara, C.P. Preecha, P. Sudmuang
SLRI, Nakhon Ratchasima, Thailand

Data acquisition and processing system has been developed for the Siam Photon Source storage ring BPM system in order to improve monitoring and logging performances. BPM readout, i.e. scanning of BPM electrode voltage outputs and subsequently converting to X-Y position values, is now performed by an upgraded Programmable Logic Controller (PLC) with higher bit resolution (16-bit) analog-to-digital converter (ADC). Moving averaging is then performed on the obtained BPM data utilizing a LabVIEW code to reduce background noise during on-line measurement. All data is then stored on a dedicated computer serving as a central data logging system, which can be remotely accessed via a network communication link. In this report, details of the new setup will be presented, and comparison will be made between the performance of the new and previous setups, together with suggestions on further improvements.

MOPA38

Development of the System for Longitudinal Coupled Bunch Modes Measurement at Indus-2

synchrotron, damping, wakefield, interface

146

S. Yadav, A.C. Holikatti, C.P. Navathe, A. Ojha, T.A. Puntambekar, Y. Tyagi
RRCAT, Indore (M.P.), India

In a circular accelerator, beam instabilities are intensity-dependent collective effects that arise because of the electromagnetic wake fields generated by the beam as it interacts with its environment. These instabilities limit the high current operation in the accelerator and degrade the performance of synchrotron radiation beam. Indus-2 is a synchrotron radiation source at RRCAT, Indore having design beam current of 300 mA and 2.5 GeV beam energy. Beam intensity signal obtained from wall current monitor (WCM) is used to measure the longitudinal coupled bunch modes (CBM). To study the beam instabilities, an automated software has been developed which acquires the beam intensity spectrum for measurement of coupled bunch modes. The software has option of complete CBM scan, scanning near the significant RF cavity higher order modes (HOM) and scanning of user-selected modes. The scanning time for complete 291 modes is ~5 minutes. In this paper, we describe the measurement system, features of the developed software and some measurement results on Indus-2 machine.

MOPB63

Emittance Measurement using X-ray Beam Profile Monitor at KEK-ATF

emittance, controls, damping, electron

215

T. Naito, H. Hayano, K. Kubo, S. Kuroda, N. Nakamura, T. Okugi, H. Sakai, N. Terunuma, J. Urakawa
KEK, Ibaraki, Japan

The X-ray profile monitor (XPM) is used for the beam size measurement in the KEK-ATF damping ring(ATF-DR) at all times. The XPM consists of a crystal monochromator, two Fresnel zone plates(FZPs) and X-ray CCD camera. Two FZPs make the imaging optics. The design resolution of the selected wavelength 3.8nm is less than 1μm, which is sufficiently small for the emittance measurement of the ATF-DR. However, the measured results at the early stage were affected by the mechanical vibration. This paper describes the improvement of the resolution and the measurement results.

TUPA11

SSRF BPM System Optimization and Upgrade

brilliance, electron, closed-orbit, injection

355

Y.B. Yan, Y.B. Leng
SSRF, Shanghai, People's Republic of China
L.Y. Yu, W.M. Zhou
SINAP, Shanghai, People's Republic of China

The beam position monitor (BPM) system at SSRF was fully equipped with Libera Electrons. It have operated steadily for nearly five years. During the summer shutdown of 2012 more than 50 Libera Electrons were upgraded to Libera Brilliance which are used mainly for fast obit feedback system. The software of whole system is upgraded from 1.42 to 2.07. Some other hardware and software optimizations are carried out. After this upgrade, the stability and performance have been improved significantly. This paper introduces the details of the optimization and upgrade.

TUPA30

Development of a Beam Loss Measurement System with Gigabit Ethernet Readout at CERN

Ethernet, FPGA, network, monitoring

414

M. Kwiatkowski, M. Alsdorf, E. Angelogiannopoulos, B. Dehning, S. Jackson, W. Viganò, C. Zamantzas
CERN, Geneva, Switzerland

The aim of the BLM Dual Polarity card under development at the European Organisation for Nuclear Research (CERN) is to measure and digitise with high precision the current produced by several types of beam loss detectors. In its default configuration, it is expected to provide data to the processing electronics through two point-to-point connections with bidirectional multi-gigabit optical links. For the development phases as well as later serving as a stand-alone measurement system, its reconfigurable FPGA device is exploited to provide a soft-core CPU with a custom made server. This server, running on the CPU, will expose through the Gigabit Ethernet connection and the TCP/IP protocol different types of data in the network. In this paper the development of the system and of the communication protocol is explored as well as the accompanying client application that is realised with the purpose of commanding, collecting storing and viewing the different types of data.

THCB02

Twisting Wire Scanner

vacuum, feedback, controls, monitoring

607

V. Gharibyan, A. Delfs, I. Krouptchenkov, D. Nölle, H. Tiessen, M. Werner, K. Wittenburg
DESY, Hamburg, Germany

A new type of 'two-in-one' wire scanner is proposed. Recent advances in linear motors' technology make it possible to combine translational and rotational movements. This will allow to scan the beam in two perpendicular directions using a single driving motor and a special fork attached to it. Vertical or horizontal mounting will help to escape problems associated with the 45 deg scanners. Test results of the translational part with linear motors will be presented.

Slides THCB02 [5.591 MB]