ICALEPCS1991 - List of Keywords (injection)

Paper	Title	Other Keywords	Page
S01SRA10	HESYRL Control System Status	controls, linac, timing, operation	40
	C.-Y. Yao USTC/NSRL, Hefei, Anhui, People’s Republic of China
	HESYRL synchrotron radiation storage ring was completed in 1989 and has been in commissioning since then. Now it has met its design specification and is ready for synchrotron light experiments. Control system of the project was completed in 1989 and some modifications were made during commissioning. This paper describes its present configuration, status and upgrading plan.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S01SRA10
About •	Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S03SRD01	Controls for the CERN Large Hadron Collider (LHC)	controls, software, database, power-supply	100
	K.H. Kissler, F. Perriollat, M. Rabany, G. Shering CERN, Meyrin, Switzerland
	CERN’s planned large superconducting collider project presents several new challenges to the Control System. These are discussed along with current thinking as to how they can be met. The high field superconducting magnets are subject to "persistent currents" which will require real time measurements and control using a mathematical model on a 2-10 second time interval. This may be realised using direct links, multiplexed using TDM, between the field equipment and central servers. Quench control and avoidance will make new demands on speed of response, reliability and surveillance. The integration of large quantities of industrially controlled equipment will be important. Much of the controls will be in common with LEP so a seamless integration of LHC and LEP controls will be sought. A very large amount of new high-tech equipment will have to be tested, assembled and installed in the LEP tunnel in a short time. The manpower and cost constraints will be much tighter than previously. New approaches will have to be found to solve many of these problems, with the additional constraint of integrating them into an existing framework.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S03SRD01
About •	Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S04SRS07	Multi-Microprocessor Control of the Main Ring Magnet Power Supply of the 12 GeV KEK Proton Synchrotron	controls, power-supply, operation, software	180
	T. Sueno, K. Mikawa, M. Toda, T. Toyama, H. Sato, S. Matsumoto KEK, Ibaraki, Japan
	A general description of the computer control system of the KEK 12 GeV PS main ring magnet power supply is given, including its peripheral devices. The system consists of the main HIDIC-V90/2S CPU and of the input and output controllers HISEC-04M. The main CPU, supervised by UNIX, provides the man-machine interfacing and implements the repetitive control algorithm to correct for any magnet current deviation from reference. Two sub-CPU’s are linked by a LAN and supported by a real time multi-task monitor. The output process controller distributes the control patterns to 16-bit DAC’s, at 1.67 ms clock period in synchronism with the 3-phase ac line systems. The input controller logs the magnet current and voltage, via 16-bit ADC’s at the same clock rate.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S04SRS07
About •	Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S04SRS08	VME Computer Monitoring System of KEK-PS Fast Pulsed Magnet Currents and Beam Intensities	booster, kicker, extraction, septum	184
	T. Kawakubo, A. Akiyama, T. Ishida, E. Kadokura KEK, Ibaraki, Japan T. Ishida Mitsubishi Electric Corporation, Tokyo, Japan
	For beam transfer from the KEK-PS Linac to the Booster synchrotron ring and from the Booster to the Main ring, many pulse magnets have been installed. It is very important for the machine operation to monitor the firing time, rising time and peak value of the pulsed magnet currents. It is also very important for magnet tuning to obtain good injection efficiency of the Booster and the Main ring, and to observe the last circulating bunched beam in the Booster as well as the first circulating in the Main. These magnet currents and beam intensity signals are digitized by a digital oscilloscope with signal multiplexers, and then shown on a graphic display screen of the console via a VME computer.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S04SRS08
About •	Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S10TS02	Injection Timing System for PLS	timing, gun, klystron, kicker	349
	S.-S. Chang, S.J. Choi, M.S. Kim, W. Namkung, S.Y. Park, S.C. Won PAL, Pohang, Republic of Korea
	The ultimate goal of the PLS timing system is to successfully inject a electron bunch to a predesigned bucket in the Storage Ring. In the Linac, a pretrigger of 10².8 microseconds prior to the Gun trigger may be required to charge the pulsed divces properly and it should be precisely delayed to synchronize with beam pass at each accelerating column. To inject the electron bunch, which fully accelerated in the Linac, into a target bucket of SR, the injection kicker magnets must be energized to provide the appropriate magnetic field. For the sequential filling of the SR buckets, the appropriate timing delays throughout the entire timing system are programmable controlled by operator.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S10TS02
About •	Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S10TS03	Automated Control System Structure of the USSR Academy of Sciences Kaon Facility	controls, feedback, beam-loading, network	352
	Yu.S. Ivanov, L.L. Filipchicov, V.A. Konovalov, B.P. Murin MRI, Moscow, Russia S.K. Esin, Y. Senichev RAS/INR, Moscow, Russia
	Up to date at Nuclear Research Institute of the USSR AS (Moscow-Troitsk) it is finished building of Moscow Meson Facility high intensity current proton Linear Accelerator (LA) (beam parameters: energy - 600 MeV, average current - 0.5 mA, pulse current - 50 mA). The LA is proposed to serve as Kaon Facility (KF) which is under working out. There are presented brief description of the KF system.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S10TS03
About •	Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S11LLC08	Non-Destructive Fast Data Taking System of Beam Profile and Momentum Spread in KEK-PS	synchrotron, acceleration, electron, vacuum	399
	T. Kawakubo, T. Adachi, Y. Ajima, E. Kadokura KEK, Ibaraki, Japan T. Ishida Mitsubishi Electric Corporation, Tokyo, Japan
	A mountain view of beam profiles in a synchrotron ring can be taken without any beam destruction by collecting charged particles produced by the circulating beam hitting residual gas in the ring to a sensor. When a rectangular Micro Channel Plate with multi-anodes or lined-up electron multipliers is used as the sensor, the profiles can be measured within one acceleration period, even if the beam intensity is very low and the ring is kept in a high vacuum. We describe this non-destructive profile monitor (NDPM) as well as the momentum spread measurement system by a combination of two sets of NDPM.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S11LLC08
About •	Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S13MMI02	General Man-Machine Interface Used in Accelerators Controls: Some Applications in CERN-PS Control Systems Rejuvenation	controls, interface, Windows, optics	452
	M. Boutheon, F. Di Maio, A. Pace CERN, Geneva, Switzerland
	A large community is now using Workstations as Accelerators Computer Controls Interface, through the concepts of windows - menus - synoptics - icons. Some standards were established for the CERN-PS control systems rejuvenation. The Booster-to-PS transfer and injection process is now entirely operated with these tools. This application constitutes a global environment providing the users with the controls, analysis, visualization of a part of an accelerator. Individual commands, measurements, and specialized programs including complex treatments are available in a homogeneous frame. Some months of experience in current operation have shown that this model can be extended to the whole project.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S13MMI02
About •	Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S16MS04	Optimization of Accelerator Control	controls, operation, distributed, experiment	550
	N.D. Vasiljev, L.V. Mozin, V.A. Shelekhov NIIEFA, St. Petersburg, Russia
	Expensive exploitation of charged particle accelerators is inevitably concerned with requirements of effectively obtaining of the best characteristics of accelerated beams for physical experiments. One of these characteristics is intensity. Increase of intensity is hindered by a number of effects, concerned with the influence of the volume charge field on a particle motion dynamics in accelerator’s chamber. However, ultimate intensity, determined by a volume charge, is almost not achieved for the most of the operating accelerators. This fact is caused by losses of particles during injection, at the initial stage of acceleration and during extraction. These losses are caused by deviations the optimal from real characteristics of the accelerating and magnetic system. This is due to a number of circumstances, including technological tolerances on structural elements of systems, influence of measuring and auxiliary equipment and beam consumers’ installations, placed in the closed proximity to magnets, and instability in operation of technological systems of accelerator. Control task consists in compensation of deviations of characteristics of magnetic and electric fields by optimal selection of control actions. As for technical means, automation of modem accelerators allows to solve optimal control problems in real time. Therefore, the report is devoted to optimal control methods and experimental results.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S16MS04
About •	Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S18BPA02	Frequency Domain Analyses of Schottky Signals Using a VME Based Data Server and a Workstation Client	controls, software, proton, antiproton	579
	A. Chapman-Hatchett, V. Chohan, I. Deloose, F. Pedersen CERN, Geneva, Switzerland
	Schottky signals are extensively used for observation, setting-up and operation of CERN’s Antiproton rings, namely the AC, the AA and LEAR. Measurement of these signals is, at present, carried out by a series of commercial instruments. These instruments have to be individually controlled and read by each application program. The operational use of the system is limited by the capabilities of the individual instruments. The first objective for the new system was to provide, as far as possible, a true "server". The "client" application program simply requests the data it requires. It is then supplied with measured and processed data. This provides the operator with a fast response by having ready processed data always available. Our second goal was to make the system operationally simple, with multiple windows and presentation on a single screen. This paper discusses some aspects of this implementation and applications for the antiproton production, collection, and storage rings.
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S18BPA02
About •	Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S18BPA03	New Controls for the CERN-PS Hadron Injection Process Using Operating Tools and High-Level Accelerator Modelling Programmes	controls, emittance, betatron, timing	583
	M. Arruat, M. Boutheon, L. Cons, Y. Deloose, F. Di Maio, D. Gueugnon, R. Hoh, M. Martini, K. Priestnall, J.P. Riunaud CERN, Meyrin, Switzerland
	A new control system using man-machine interface tools with workstations as consoles has been successfully put into operation for the injection of hadrons in the CERN Proton Synchrotron (PS). This paper mainly focuses on specialized modelling programmes involving complex treatments for an optimum operation of the injection process. These programmes include the control of the injection timings, the measurement of the beam emittance with an estimation of how well the incoming beam is matched, and the correction of oscillations at injection. The infrastructure and the programming environment underlaying the new control system are described elsewhere 3¿ The outstanding feature of the internal structure of all these modelling programmes is that they carry out three kinds of data interaction: the input, that is the measurements (e.g. beam time positions, profiles and trajectories), the physical parameters (e.g. required times for synchronization, beam emittance, beam space position and angle at injection), and the output, mainly the hardware values (e.g. preset counter settings, currents to apply to injection steering magnets).
DOI •	reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S18BPA03
About •	Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

S01SRA10

HESYRL Control System Status

controls, linac, timing, operation

40

C.-Y. Yao
USTC/NSRL, Hefei, Anhui, People’s Republic of China

HESYRL synchrotron radiation storage ring was completed in 1989 and has been in commissioning since then. Now it has met its design specification and is ready for synchrotron light experiments. Control system of the project was completed in 1989 and some modifications were made during commissioning. This paper describes its present configuration, status and upgrading plan.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S01SRA10

About •

Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S03SRD01

Controls for the CERN Large Hadron Collider (LHC)

controls, software, database, power-supply

100

K.H. Kissler, F. Perriollat, M. Rabany, G. Shering
CERN, Meyrin, Switzerland

CERN’s planned large superconducting collider project presents several new challenges to the Control System. These are discussed along with current thinking as to how they can be met. The high field superconducting magnets are subject to "persistent currents" which will require real time measurements and control using a mathematical model on a 2-10 second time interval. This may be realised using direct links, multiplexed using TDM, between the field equipment and central servers. Quench control and avoidance will make new demands on speed of response, reliability and surveillance. The integration of large quantities of industrially controlled equipment will be important. Much of the controls will be in common with LEP so a seamless integration of LHC and LEP controls will be sought. A very large amount of new high-tech equipment will have to be tested, assembled and installed in the LEP tunnel in a short time. The manpower and cost constraints will be much tighter than previously. New approaches will have to be found to solve many of these problems, with the additional constraint of integrating them into an existing framework.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S03SRD01

About •

Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S04SRS07

Multi-Microprocessor Control of the Main Ring Magnet Power Supply of the 12 GeV KEK Proton Synchrotron

controls, power-supply, operation, software

180

T. Sueno, K. Mikawa, M. Toda, T. Toyama, H. Sato, S. Matsumoto
KEK, Ibaraki, Japan

A general description of the computer control system of the KEK 12 GeV PS main ring magnet power supply is given, including its peripheral devices. The system consists of the main HIDIC-V90/2S CPU and of the input and output controllers HISEC-04M. The main CPU, supervised by UNIX, provides the man-machine interfacing and implements the repetitive control algorithm to correct for any magnet current deviation from reference. Two sub-CPU’s are linked by a LAN and supported by a real time multi-task monitor. The output process controller distributes the control patterns to 16-bit DAC’s, at 1.67 ms clock period in synchronism with the 3-phase ac line systems. The input controller logs the magnet current and voltage, via 16-bit ADC’s at the same clock rate.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S04SRS07

About •

Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S04SRS08

VME Computer Monitoring System of KEK-PS Fast Pulsed Magnet Currents and Beam Intensities

booster, kicker, extraction, septum

184

T. Kawakubo, A. Akiyama, T. Ishida, E. Kadokura
KEK, Ibaraki, Japan
T. Ishida
Mitsubishi Electric Corporation, Tokyo, Japan

For beam transfer from the KEK-PS Linac to the Booster synchrotron ring and from the Booster to the Main ring, many pulse magnets have been installed. It is very important for the machine operation to monitor the firing time, rising time and peak value of the pulsed magnet currents. It is also very important for magnet tuning to obtain good injection efficiency of the Booster and the Main ring, and to observe the last circulating bunched beam in the Booster as well as the first circulating in the Main. These magnet currents and beam intensity signals are digitized by a digital oscilloscope with signal multiplexers, and then shown on a graphic display screen of the console via a VME computer.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S04SRS08

About •

Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S10TS02

Injection Timing System for PLS

timing, gun, klystron, kicker

349

S.-S. Chang, S.J. Choi, M.S. Kim, W. Namkung, S.Y. Park, S.C. Won
PAL, Pohang, Republic of Korea

The ultimate goal of the PLS timing system is to successfully inject a electron bunch to a predesigned bucket in the Storage Ring. In the Linac, a pretrigger of 10².8 microseconds prior to the Gun trigger may be required to charge the pulsed divces properly and it should be precisely delayed to synchronize with beam pass at each accelerating column. To inject the electron bunch, which fully accelerated in the Linac, into a target bucket of SR, the injection kicker magnets must be energized to provide the appropriate magnetic field. For the sequential filling of the SR buckets, the appropriate timing delays throughout the entire timing system are programmable controlled by operator.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S10TS02

About •

Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S10TS03

Automated Control System Structure of the USSR Academy of Sciences Kaon Facility

controls, feedback, beam-loading, network

352

Yu.S. Ivanov, L.L. Filipchicov, V.A. Konovalov, B.P. Murin
MRI, Moscow, Russia
S.K. Esin, Y. Senichev
RAS/INR, Moscow, Russia

Up to date at Nuclear Research Institute of the USSR AS (Moscow-Troitsk) it is finished building of Moscow Meson Facility high intensity current proton Linear Accelerator (LA) (beam parameters: energy - 600 MeV, average current - 0.5 mA, pulse current - 50 mA). The LA is proposed to serve as Kaon Facility (KF) which is under working out. There are presented brief description of the KF system.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S10TS03

About •

Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S11LLC08

Non-Destructive Fast Data Taking System of Beam Profile and Momentum Spread in KEK-PS

synchrotron, acceleration, electron, vacuum

399

T. Kawakubo, T. Adachi, Y. Ajima, E. Kadokura
KEK, Ibaraki, Japan
T. Ishida
Mitsubishi Electric Corporation, Tokyo, Japan

A mountain view of beam profiles in a synchrotron ring can be taken without any beam destruction by collecting charged particles produced by the circulating beam hitting residual gas in the ring to a sensor. When a rectangular Micro Channel Plate with multi-anodes or lined-up electron multipliers is used as the sensor, the profiles can be measured within one acceleration period, even if the beam intensity is very low and the ring is kept in a high vacuum. We describe this non-destructive profile monitor (NDPM) as well as the momentum spread measurement system by a combination of two sets of NDPM.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S11LLC08

About •

Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S13MMI02

General Man-Machine Interface Used in Accelerators Controls: Some Applications in CERN-PS Control Systems Rejuvenation

controls, interface, Windows, optics

452

M. Boutheon, F. Di Maio, A. Pace
CERN, Geneva, Switzerland

A large community is now using Workstations as Accelerators Computer Controls Interface, through the concepts of windows - menus - synoptics - icons. Some standards were established for the CERN-PS control systems rejuvenation. The Booster-to-PS transfer and injection process is now entirely operated with these tools. This application constitutes a global environment providing the users with the controls, analysis, visualization of a part of an accelerator. Individual commands, measurements, and specialized programs including complex treatments are available in a homogeneous frame. Some months of experience in current operation have shown that this model can be extended to the whole project.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S13MMI02

About •

Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S16MS04

Optimization of Accelerator Control

controls, operation, distributed, experiment

550

N.D. Vasiljev, L.V. Mozin, V.A. Shelekhov
NIIEFA, St. Petersburg, Russia

Expensive exploitation of charged particle accelerators is inevitably concerned with requirements of effectively obtaining of the best characteristics of accelerated beams for physical experiments. One of these characteristics is intensity. Increase of intensity is hindered by a number of effects, concerned with the influence of the volume charge field on a particle motion dynamics in accelerator’s chamber. However, ultimate intensity, determined by a volume charge, is almost not achieved for the most of the operating accelerators. This fact is caused by losses of particles during injection, at the initial stage of acceleration and during extraction. These losses are caused by deviations the optimal from real characteristics of the accelerating and magnetic system. This is due to a number of circumstances, including technological tolerances on structural elements of systems, influence of measuring and auxiliary equipment and beam consumers’ installations, placed in the closed proximity to magnets, and instability in operation of technological systems of accelerator. Control task consists in compensation of deviations of characteristics of magnetic and electric fields by optimal selection of control actions. As for technical means, automation of modem accelerators allows to solve optimal control problems in real time. Therefore, the report is devoted to optimal control methods and experimental results.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S16MS04

About •

Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S18BPA02

Frequency Domain Analyses of Schottky Signals Using a VME Based Data Server and a Workstation Client

controls, software, proton, antiproton

579

A. Chapman-Hatchett, V. Chohan, I. Deloose, F. Pedersen
CERN, Geneva, Switzerland

Schottky signals are extensively used for observation, setting-up and operation of CERN’s Antiproton rings, namely the AC, the AA and LEAR. Measurement of these signals is, at present, carried out by a series of commercial instruments. These instruments have to be individually controlled and read by each application program. The operational use of the system is limited by the capabilities of the individual instruments. The first objective for the new system was to provide, as far as possible, a true "server". The "client" application program simply requests the data it requires. It is then supplied with measured and processed data. This provides the operator with a fast response by having ready processed data always available. Our second goal was to make the system operationally simple, with multiple windows and presentation on a single screen. This paper discusses some aspects of this implementation and applications for the antiproton production, collection, and storage rings.

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S18BPA02

About •

Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

S18BPA03

New Controls for the CERN-PS Hadron Injection Process Using Operating Tools and High-Level Accelerator Modelling Programmes

controls, emittance, betatron, timing

583

M. Arruat, M. Boutheon, L. Cons, Y. Deloose, F. Di Maio, D. Gueugnon, R. Hoh, M. Martini, K. Priestnall, J.P. Riunaud
CERN, Meyrin, Switzerland

A new control system using man-machine interface tools with workstations as consoles has been successfully put into operation for the injection of hadrons in the CERN Proton Synchrotron (PS). This paper mainly focuses on specialized modelling programmes involving complex treatments for an optimum operation of the injection process. These programmes include the control of the injection timings, the measurement of the beam emittance with an estimation of how well the incoming beam is matched, and the correction of oscillations at injection. The infrastructure and the programming environment underlaying the new control system are described elsewhere 3¿ The outstanding feature of the internal structure of all these modelling programmes is that they carry out three kinds of data interaction: the input, that is the measurements (e.g. beam time positions, profiles and trajectories), the physical parameters (e.g. required times for synchronization, beam emittance, beam space position and angle at injection), and the output, mainly the hardware values (e.g. preset counter settings, currents to apply to injection steering magnets).

DOI •

reference for this paper ※ doi:10.18429/JACoW-ICALEPCS1991-S18BPA03

About •

Received ※ 11 November 1991 — Accepted ※ 20 November 1991 — Issued ※ 04 December 1992

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)