ICALEPCS2015 - List of Keywords (booster)

Paper	Title	Other Keywords	Page
MOM310	Nonlinear System Identification of Superconducting Magnets of RHIC at BNL	superconducting-magnet, diagnostics, real-time, collider	90
	P. Chitnis Stony Brook University, Stony Brook, New York, USA K.A. Brown BNL, Upton, Long Island, New York, USA
	Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy. The Quench Detection System (QDS) of RHIC detects the Superconducting (SC) magnet quenches by voltage sensing. The real-time voltage across the SC magnet is compared with a predicted voltage from a behavioral model, a deviation from which triggers the quench event and energy extraction. Due to the limitations of the magnet model, many false quench events are generated that affect the RHIC availability. This work is targeted towards remodeling the magnets through nonlinear system identification for the improvement in QDS reliability. The nonlinear electrical behavior of the SC magnets is investigated by statistical data analysis of magnet current and voltage signals. Many data cleaning techniques are employed to reduce the noise in the observed data. Piecewise regression has been used to examine the saturation effects in magnet inductance. The goodness-of-fit of the model is assessed by field testing and comprehensive residual analysis. Finally a new model is suggested for the magnets to be implemented for more accurate results.
	Slides MOM310 [0.826 MB]
	Poster MOM310 [0.985 MB]
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MOPGF080	Control System of RF Stations for NICA Booster	controls, interface, Ethernet, operation	270
	G.A. Fatkin, A.M. Batrakov, I.V. Ilyin, M.Yu. Vasilyev BINP SB RAS, Novosibirsk, Russia G.A. Fatkin NSU, Novosibirsk, Russia
	NICA (Nuclotron based Ion Collider fAcility) is an accelerator complex, which is being built in JINR (Dubna, Russia). The system described in this paper is controlling the RF stations of booster, the first element of the NICA complex. The two devices are parts of the Control System: Intellectual Controller and Tester module. The first one is designed for precise measurement of magnetic field, generation of the acceleration frequency in accordance with measured field and control RF power and pre-amplifiers. Intellectual Controller is a real-time feed-forward system with 20 ums loop time. It is based on ARM microcontroller and bare-metal control programs are used to reach maximum performance. Approaches that were used to achieve maximum performance are elaborated and presented in this paper. The second part of system - Tester is a simulator for tuning and checking the RF stations before start of operations or in absence of real accelerator. The achieved accuracy in chain 'magnetic field' - 'acceleration frequency' is better than 5*10^-5. Plans on feedback incorporation to stabilize ion beam behavior via frequency and phase tuning are discussed.
	Poster MOPGF080 [15.320 MB]
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MOPGF087	TPS Booster Tune Measurement System	injection, dipole, power-supply, photon	274
	P.C. Chiu, Y.-S. Cheng, K.T. Hsu, K.H. Hu, C.Y. Liao NSRRC, Hsinchu, Taiwan
	The TPS is a state-of-the-art synchrotron radiation facility featuring ultra-high photon brightness with extremely low emittance. Its Booster has 6 FODO cells which include 7 BD dipoles with 1.6 m long and 2 BH dipoles with 0.8 m long in each cell. After magnetization of stainless steel vacuum chamber of the booster were identified and then dismantled, annealed, and re-installed, the electron beam energy of the Taiwan Photon Source (TPS) in the booster ring has ramped to 3 GeV in a week. The booster tune correction during ramping is one of the main reasons why the booster commissioning progress is so fast. In this paper the summarized the booster tune monitor system will be summarised
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WEPGF061	Beam Trail Tracking at Fermilab	database, interface, linac, software	838
	D.J. Nicklaus, L.R. Carmichael, R. Neswold, Z.Y. Yuan Fermilab, Batavia, Illinois, USA
	This paper presents a system for acquiring and sorting data from select devices depending on the destination of each particular beam pulse in the Fermilab accelerator chain. The 15 Hz beam that begins in the Fermilab Linac can be directed to a variety of additional accelerators, beam lines, beam dumps, and experiments. We have implemented a data acquisition system that senses the destination of each pulse and reads the appropriate beam intensity devices so that profiles of the beam can be stored and analyzed for each type of beam trail. It is envisioned that this data will be utilized long term to identify trends in the performance of the accelerators.
	Poster WEPGF061 [2.198 MB]
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WEPGF128	Development Status of the Sirius Timing System	timing, injection, storage-ring, linac	1007
	J.L.N. Brito, S.R. Marques, L.A. Martins, D.O. Tavares LNLS, Campinas, Brazil
	Sirius is a new low-emittance 3 GeV synchrotron light source under construction in Brazil by LNLS, scheduled for commissioning in 2018. Its timing system will be responsible for providing low jitter synchronized signals for the beam injection process as well as reference clocks and triggers for diverse subsystems such as electron BPMs, fast orbit feedback and beamlines distributed around the 518 meters circumference of the storage ring, Booster and Linac. It will be composed of Ethernet-configured standalone event generators and event receivers modules developed by SINAP through a collaboration with LNLS. The modules will be controlled by remote EPICS soft IOCs. This paper presents the system structure and the status of the development, some options for integrating it to the Sirius BPM MicroTCA platform are also discussed.
	Poster WEPGF128 [13.925 MB]
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Paper

Title

Other Keywords

Page

MOM310

Nonlinear System Identification of Superconducting Magnets of RHIC at BNL

superconducting-magnet, diagnostics, real-time, collider

90

P. Chitnis
Stony Brook University, Stony Brook, New York, USA
K.A. Brown
BNL, Upton, Long Island, New York, USA

Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy.
The Quench Detection System (QDS) of RHIC detects the Superconducting (SC) magnet quenches by voltage sensing. The real-time voltage across the SC magnet is compared with a predicted voltage from a behavioral model, a deviation from which triggers the quench event and energy extraction. Due to the limitations of the magnet model, many false quench events are generated that affect the RHIC availability. This work is targeted towards remodeling the magnets through nonlinear system identification for the improvement in QDS reliability. The nonlinear electrical behavior of the SC magnets is investigated by statistical data analysis of magnet current and voltage signals. Many data cleaning techniques are employed to reduce the noise in the observed data. Piecewise regression has been used to examine the saturation effects in magnet inductance. The goodness-of-fit of the model is assessed by field testing and comprehensive residual analysis. Finally a new model is suggested for the magnets to be implemented for more accurate results.

Slides MOM310 [0.826 MB]

Poster MOM310 [0.985 MB]

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MOPGF080

Control System of RF Stations for NICA Booster

controls, interface, Ethernet, operation

270

G.A. Fatkin, A.M. Batrakov, I.V. Ilyin, M.Yu. Vasilyev
BINP SB RAS, Novosibirsk, Russia
G.A. Fatkin
NSU, Novosibirsk, Russia

NICA (Nuclotron based Ion Collider fAcility) is an accelerator complex, which is being built in JINR (Dubna, Russia). The system described in this paper is controlling the RF stations of booster, the first element of the NICA complex. The two devices are parts of the Control System: Intellectual Controller and Tester module. The first one is designed for precise measurement of magnetic field, generation of the acceleration frequency in accordance with measured field and control RF power and pre-amplifiers. Intellectual Controller is a real-time feed-forward system with 20 ums loop time. It is based on ARM microcontroller and bare-metal control programs are used to reach maximum performance. Approaches that were used to achieve maximum performance are elaborated and presented in this paper. The second part of system - Tester is a simulator for tuning and checking the RF stations before start of operations or in absence of real accelerator. The achieved accuracy in chain 'magnetic field' - 'acceleration frequency' is better than 5*10^-5. Plans on feedback incorporation to stabilize ion beam behavior via frequency and phase tuning are discussed.

Poster MOPGF080 [15.320 MB]

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

MOPGF087

TPS Booster Tune Measurement System

injection, dipole, power-supply, photon

274

P.C. Chiu, Y.-S. Cheng, K.T. Hsu, K.H. Hu, C.Y. Liao
NSRRC, Hsinchu, Taiwan

The TPS is a state-of-the-art synchrotron radiation facility featuring ultra-high photon brightness with extremely low emittance. Its Booster has 6 FODO cells which include 7 BD dipoles with 1.6 m long and 2 BH dipoles with 0.8 m long in each cell. After magnetization of stainless steel vacuum chamber of the booster were identified and then dismantled, annealed, and re-installed, the electron beam energy of the Taiwan Photon Source (TPS) in the booster ring has ramped to 3 GeV in a week. The booster tune correction during ramping is one of the main reasons why the booster commissioning progress is so fast. In this paper the summarized the booster tune monitor system will be summarised

Export •

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

WEPGF061

Beam Trail Tracking at Fermilab

database, interface, linac, software

838

D.J. Nicklaus, L.R. Carmichael, R. Neswold, Z.Y. Yuan
Fermilab, Batavia, Illinois, USA

This paper presents a system for acquiring and sorting data from select devices depending on the destination of each particular beam pulse in the Fermilab accelerator chain. The 15 Hz beam that begins in the Fermilab Linac can be directed to a variety of additional accelerators, beam lines, beam dumps, and experiments. We have implemented a data acquisition system that senses the destination of each pulse and reads the appropriate beam intensity devices so that profiles of the beam can be stored and analyzed for each type of beam trail. It is envisioned that this data will be utilized long term to identify trends in the performance of the accelerators.

Poster WEPGF061 [2.198 MB]

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

WEPGF128

Development Status of the Sirius Timing System

timing, injection, storage-ring, linac

1007

J.L.N. Brito, S.R. Marques, L.A. Martins, D.O. Tavares
LNLS, Campinas, Brazil

Sirius is a new low-emittance 3 GeV synchrotron light source under construction in Brazil by LNLS, scheduled for commissioning in 2018. Its timing system will be responsible for providing low jitter synchronized signals for the beam injection process as well as reference clocks and triggers for diverse subsystems such as electron BPMs, fast orbit feedback and beamlines distributed around the 518 meters circumference of the storage ring, Booster and Linac. It will be composed of Ethernet-configured standalone event generators and event receivers modules developed by SINAP through a collaboration with LNLS. The modules will be controlled by remote EPICS soft IOCs. This paper presents the system structure and the status of the development, some options for integrating it to the Sirius BPM MicroTCA platform are also discussed.

Poster WEPGF128 [13.925 MB]

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