DIPAC2011 - List of Keywords (power-supply)

Paper	Title	Other Keywords	Page
MOPD02	The CNAO Qualification Monitor	extraction, synchrotron, proton, controls	32
	C. Viviani, G. Balbinot, J. Bosser, M. Caldara, H. Caracciolo, M.A. Garella, V. Lante, A. Parravicini, M. Pullia CNAO Foundation, Milan, Italy
	The CNAO (Centro Nazionale di Adroterapia Oncologica) Foundation is the first Italian center for deep hadrontherapy. It will treat patients using Protons and Carbon ions in the next coming months. Patient safety is the first priority and many diagnostics devices have been developed to guarantee it. This work presents the so-called Qualification Monitor (QM). It is mounted in the common part of the four extraction lines, in front of the Chopper Dump, and it aims to qualify the extracted beam profile and intensity, before sending it to the treatment rooms. It is made of two different detectors: the first one, called Qualification Profile Monitor (QPM), is made by two dimensional harp of scintillating fibers to measure horizontal and vertical profiles. The second one, named Qualification Intensity Monitor (QIM) is a scintillating plate for intensity measurement. At the beginning of each extracted spill the beam is dumped on the Chopper Dump and it hit the QM. Only a positive result from beam qualification allows to switch on Chopper magnets and to send the beam to the patient. The QM is working with beam from some months, first results and future upgrades are presented.

MOPD03	The Beam Safety System of the PSI UCN Source	target, proton, kicker, neutron	35
	D. Reggiani, B. Blarer, P.-A. Duperrex, G. Dzieglewski, F. Heinrich, A.C. Mezger, U. Rohrer, K. Thomsen, M. Wohlmuther PSI, Villigen, Switzerland
	At PSI, a new and very intensive Ultra-Cold Neutron (UCN) source based on the spallation principle was commissioned in December 2010 and will start production in 2011. From then on, two neutron spallation sources, the continuous wave SINQ and the macro-pulsed UCN source, both furnished with a solid state target, will be operating concurrently at PSI. The 590 MeV, 1.3 MW proton beam will be switched towards the new spallation target for about 8 s every 800 s. Safe operation of the UCN source is guaranteed by two independent interlock systems. In fact, beside the well established accelerator protection system, a new fast interlock system has been designed following the experience gathered with the MEGAPIE (Megawatt Pilot Target Experiment) project. The goal of this additional system is to preserve the UCN target and the complete beam line installation by ensuring correct beam settings and, at the same time, to avoid any accidental release of radioactive material. After a brief introduction of the PSI UCN source, this paper will focus on the motivations as well as the principle of operation of the UCN beam safety system.
	Poster MOPD03 [3.046 MB]

MOPD51	Progress with the Scintillation Profile Monitor at COSY	vacuum, proton, synchrotron, target	164
	V. Kamerdzhiev, J. Dietrich, F. Klehr, K. Reimers FZJ, Jülich, Germany
	After successful demonstration measurements with the Scintillation Profile Monitor at COSY, a dedicated vacuum chamber with two vacuum windows and supporting vacuum ports was installed in the COSY synchrotron. The chamber is blackened inside to suppress light reflection. Since residual gas pressure is too low to support reliable profile measurements based on beam induced scintillation, a piezo-electric dosing valve was installed allowing fast injections of defined amount of nitrogen. A 32-channel photomultiplier is used to detect light. Beam profile measurements and first operational experience are reported.

MOPD74	The New Fast Orbit Correction System of the ESRF Storage Ring	storage-ring, feedback, insertion, damping	215
	E. Plouviez, F. Epaud, J.M. Koch, K.B. Scheidt ESRF, Grenoble, France
	The ESRF is upgrading the orbit correction system of its storage ring. The goal of this upgrade is to damp the effect on the orbit stability of the insertion devices during the changes of their settings, as well as the effect of the environmental vibrations and AC main power spurious fields; in order to achieve this goal we aim at a correction bandwith of 200Hz. The final system will use the data of 224 BPMs already equipped with Libera brilliance electronics. The correction will be applied by a set of 96 correctors implemented in the auxillary legs of the sextupolar magnets, driven by newly designed fast power supplies . The power supplies are controlled using a set of 8 FPGA boards connected to the power supplies inputs with serial links; these FPGA will also compute the correctors currents using the BPMs data. All the correctors and BPMs are now installed and interconnected and we have already performed orbit correction tests over 2 of the 32 cells of our storage ring using one single FPGA board controlling 6 correctors. These tests have allowed us to evaluate the final performance of the system. This paper presents this new system and the results of these tests.

MOPD86	Development of FESA-based Data Acquisition and Control for FAIR	controls, diagnostics, synchrotron, high-voltage	248
	R. Haseitl, H. Bräuning, T. Hoffmann, K. Lang, R. Singh GSI, Darmstadt, Germany
	GSI has selected the CERN Front End Software Architecture (FESA) to operate future beam diagnostic devices for the upcoming FAIR facility. The FESA framework is installed and operational at the GSI site, giving equipment specialists the possibility to develop FESA classes for device control and data acquisition. This contribution outlines first developments of FESA-based systems for various applications. Prototype DAQ systems based on FESA are the BPM system of the synchrotron SIS18 with data rates up to 7 GBit/s and a large scaler setup for particle counters called LASSIE. FESA classes that address gigabit Ethernet cameras are used for video imaging tasks like scintillator screen observation. Control oriented FESA classes access industrial Programmable Logic Controllers (PLCs) for the slow control of beam diagnostic devices. To monitor temperatures and set fan speeds of VME crates, a class communicating over the CAN bus has been developed.
	Poster MOPD86 [3.137 MB]

MOPD90	Cause Identification of Beam Losses in PETRA III by Time Correlation of Alarms	undulator, status, beam-losses, dumping	257
	T. Lensch, M. Werner DESY, Hamburg, Germany
	PETRA III is a high brilliant synchrotron light-source operating at 6 GeV at the DESY site in Hamburg. The Machine Protection System (MPS) of PETRA III is under operation since the beginning of the commissioning of PETRA III in April 2009. Under certain alarm conditions the MPS generates a dump command and protects the machine against damage. As a functional extension the MPS hardware examines the time correlation of alarm sequences after a beam loss. The alarm sequences are evaluated in a software based system so that the cause of a beam loss can be displayed in the control room immediately. This paper describes the hardware implementation as well as the software rules.
	Poster MOPD90 [0.548 MB]

TUPD40	Analysis of the Post-mortem Events at the TLS	SRF, diagnostics, dipole, injection	392
	K.H. Hu, Y.-T. Chang, J. Chen, P.C. Chiu, K.T. Hsu, C.H. Kuo, Y.-H. Lin, Y.R. Pan NSRRC, Hsinchu, Taiwan
	Analyzing the reasons of various trip events are basis to improve reliability of a accelerator system. Understand the mechanisms caused trip of the machine will be very helpful to decide what the adequate measures to improve availability. To identify the causes of trips at Taiwan Light Source (TLS), various diagnostics tool were employed. These diagnostic tools can capture beam trips, interlock signals of superconducting RF system, quench and interlock signals of the superconducting insertion device, waveform of the injection kickers, and instability signals of the stored beam for post-mortem analysis. Various functionalities of trip diagnostic are supported. Available tools and experiences will be summarized in this report.

TUPD73	Fast Orbit Stabilization System for Tandem APPLE-II Undulators at the KEK-PF	kicker, undulator, controls, polarization	479
	T. Obina, K. Harada, R. Takai KEK, Ibaraki, Japan
	A rapid-polarization switching source has been developed in the KEK-PF 2.5-GeV electron storage ring. The source consists of two tandem APPLE-II type elliptically polarizing undulators (EPU) and five fast kicker magnets. The kicker magnets produce a local bump orbit at the frequency up to 100 Hz. Amplitude and phase of these magnets must be tuned precisely in order to minimize the leakage of residual orbit outside of the kicker bump. A fast orbit stabilization system which consists of ADC/FPGA/DAC are also developed to reduce the remaining orbit fluctuations in vertical and horizontal planes. In this paper, design and the preliminary result of the fast orbit compensation system is presented.

Paper

Title

Other Keywords

Page

MOPD02

The CNAO Qualification Monitor

extraction, synchrotron, proton, controls

32

C. Viviani, G. Balbinot, J. Bosser, M. Caldara, H. Caracciolo, M.A. Garella, V. Lante, A. Parravicini, M. Pullia
CNAO Foundation, Milan, Italy

The CNAO (Centro Nazionale di Adroterapia Oncologica) Foundation is the first Italian center for deep hadrontherapy. It will treat patients using Protons and Carbon ions in the next coming months. Patient safety is the first priority and many diagnostics devices have been developed to guarantee it. This work presents the so-called Qualification Monitor (QM). It is mounted in the common part of the four extraction lines, in front of the Chopper Dump, and it aims to qualify the extracted beam profile and intensity, before sending it to the treatment rooms. It is made of two different detectors: the first one, called Qualification Profile Monitor (QPM), is made by two dimensional harp of scintillating fibers to measure horizontal and vertical profiles. The second one, named Qualification Intensity Monitor (QIM) is a scintillating plate for intensity measurement. At the beginning of each extracted spill the beam is dumped on the Chopper Dump and it hit the QM. Only a positive result from beam qualification allows to switch on Chopper magnets and to send the beam to the patient. The QM is working with beam from some months, first results and future upgrades are presented.

MOPD03

The Beam Safety System of the PSI UCN Source

target, proton, kicker, neutron

35

D. Reggiani, B. Blarer, P.-A. Duperrex, G. Dzieglewski, F. Heinrich, A.C. Mezger, U. Rohrer, K. Thomsen, M. Wohlmuther
PSI, Villigen, Switzerland

At PSI, a new and very intensive Ultra-Cold Neutron (UCN) source based on the spallation principle was commissioned in December 2010 and will start production in 2011. From then on, two neutron spallation sources, the continuous wave SINQ and the macro-pulsed UCN source, both furnished with a solid state target, will be operating concurrently at PSI. The 590 MeV, 1.3 MW proton beam will be switched towards the new spallation target for about 8 s every 800 s. Safe operation of the UCN source is guaranteed by two independent interlock systems. In fact, beside the well established accelerator protection system, a new fast interlock system has been designed following the experience gathered with the MEGAPIE (Megawatt Pilot Target Experiment) project. The goal of this additional system is to preserve the UCN target and the complete beam line installation by ensuring correct beam settings and, at the same time, to avoid any accidental release of radioactive material. After a brief introduction of the PSI UCN source, this paper will focus on the motivations as well as the principle of operation of the UCN beam safety system.

Poster MOPD03 [3.046 MB]

MOPD51

Progress with the Scintillation Profile Monitor at COSY

vacuum, proton, synchrotron, target

164

V. Kamerdzhiev, J. Dietrich, F. Klehr, K. Reimers
FZJ, Jülich, Germany

After successful demonstration measurements with the Scintillation Profile Monitor at COSY, a dedicated vacuum chamber with two vacuum windows and supporting vacuum ports was installed in the COSY synchrotron. The chamber is blackened inside to suppress light reflection. Since residual gas pressure is too low to support reliable profile measurements based on beam induced scintillation, a piezo-electric dosing valve was installed allowing fast injections of defined amount of nitrogen. A 32-channel photomultiplier is used to detect light. Beam profile measurements and first operational experience are reported.

MOPD74

The New Fast Orbit Correction System of the ESRF Storage Ring

storage-ring, feedback, insertion, damping

215

E. Plouviez, F. Epaud, J.M. Koch, K.B. Scheidt
ESRF, Grenoble, France

The ESRF is upgrading the orbit correction system of its storage ring. The goal of this upgrade is to damp the effect on the orbit stability of the insertion devices during the changes of their settings, as well as the effect of the environmental vibrations and AC main power spurious fields; in order to achieve this goal we aim at a correction bandwith of 200Hz. The final system will use the data of 224 BPMs already equipped with Libera brilliance electronics. The correction will be applied by a set of 96 correctors implemented in the auxillary legs of the sextupolar magnets, driven by newly designed fast power supplies . The power supplies are controlled using a set of 8 FPGA boards connected to the power supplies inputs with serial links; these FPGA will also compute the correctors currents using the BPMs data. All the correctors and BPMs are now installed and interconnected and we have already performed orbit correction tests over 2 of the 32 cells of our storage ring using one single FPGA board controlling 6 correctors. These tests have allowed us to evaluate the final performance of the system. This paper presents this new system and the results of these tests.

MOPD86

Development of FESA-based Data Acquisition and Control for FAIR

controls, diagnostics, synchrotron, high-voltage

248

R. Haseitl, H. Bräuning, T. Hoffmann, K. Lang, R. Singh
GSI, Darmstadt, Germany

GSI has selected the CERN Front End Software Architecture (FESA) to operate future beam diagnostic devices for the upcoming FAIR facility. The FESA framework is installed and operational at the GSI site, giving equipment specialists the possibility to develop FESA classes for device control and data acquisition. This contribution outlines first developments of FESA-based systems for various applications. Prototype DAQ systems based on FESA are the BPM system of the synchrotron SIS18 with data rates up to 7 GBit/s and a large scaler setup for particle counters called LASSIE. FESA classes that address gigabit Ethernet cameras are used for video imaging tasks like scintillator screen observation. Control oriented FESA classes access industrial Programmable Logic Controllers (PLCs) for the slow control of beam diagnostic devices. To monitor temperatures and set fan speeds of VME crates, a class communicating over the CAN bus has been developed.

Poster MOPD86 [3.137 MB]

MOPD90

Cause Identification of Beam Losses in PETRA III by Time Correlation of Alarms

undulator, status, beam-losses, dumping

257

T. Lensch, M. Werner
DESY, Hamburg, Germany

PETRA III is a high brilliant synchrotron light-source operating at 6 GeV at the DESY site in Hamburg. The Machine Protection System (MPS) of PETRA III is under operation since the beginning of the commissioning of PETRA III in April 2009. Under certain alarm conditions the MPS generates a dump command and protects the machine against damage. As a functional extension the MPS hardware examines the time correlation of alarm sequences after a beam loss. The alarm sequences are evaluated in a software based system so that the cause of a beam loss can be displayed in the control room immediately. This paper describes the hardware implementation as well as the software rules.

Poster MOPD90 [0.548 MB]

TUPD40

Analysis of the Post-mortem Events at the TLS

SRF, diagnostics, dipole, injection

392

K.H. Hu, Y.-T. Chang, J. Chen, P.C. Chiu, K.T. Hsu, C.H. Kuo, Y.-H. Lin, Y.R. Pan
NSRRC, Hsinchu, Taiwan

Analyzing the reasons of various trip events are basis to improve reliability of a accelerator system. Understand the mechanisms caused trip of the machine will be very helpful to decide what the adequate measures to improve availability. To identify the causes of trips at Taiwan Light Source (TLS), various diagnostics tool were employed. These diagnostic tools can capture beam trips, interlock signals of superconducting RF system, quench and interlock signals of the superconducting insertion device, waveform of the injection kickers, and instability signals of the stored beam for post-mortem analysis. Various functionalities of trip diagnostic are supported. Available tools and experiences will be summarized in this report.

TUPD73

Fast Orbit Stabilization System for Tandem APPLE-II Undulators at the KEK-PF

kicker, undulator, controls, polarization

479

T. Obina, K. Harada, R. Takai
KEK, Ibaraki, Japan

A rapid-polarization switching source has been developed in the KEK-PF 2.5-GeV electron storage ring. The source consists of two tandem APPLE-II type elliptically polarizing undulators (EPU) and five fast kicker magnets. The kicker magnets produce a local bump orbit at the frequency up to 100 Hz. Amplitude and phase of these magnets must be tuned precisely in order to minimize the leakage of residual orbit outside of the kicker bump. A fast orbit stabilization system which consists of ADC/FPGA/DAC are also developed to reduce the remaining orbit fluctuations in vertical and horizontal planes. In this paper, design and the preliminary result of the fast orbit compensation system is presented.