IPAC2016 - Classification: 06 Beam Instrumentation, Controls, Feedback and Operational Aspects / T22 Reliability, Operability

Paper	Title	Page
MOOCB03	Distributed Matching Scheme and a Deterministic Flexible Matching Algorithm for Arbitrary Systems	65
	Y.-C. Chao SLAC, Menlo Park, California, USA Y.-C. Chao TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
	Paradigm complementary to conventional matching is explored, with matching distributed across the entire line. This can have varying degrees of advantage depending on acuteness of issues in a conventional scheme: - Limited flexibility and space constraint for matching section - Neglect of beam property away from matching section - Excessive envelope/magnet strength caused by matching (sub-optimal tradeoff) - Local envelope blowup inside matching section - Low tolerance to errors and lack of recourse to matching failure - Slow computation process - Unpredictable solution - Limited option/insight/control on implementing solution. A scheme was envisioned to address these, backed by recently developed matching algorithm tailored to this demand. It can be applied to any beamline configuration, including coupled 4D or intervening elements, providing deterministic, rigorous solutions allowing insight and control pre-implementation. It also shows promise of global optimum. Combined with the distributed scheme this algorithm promises additional advantages of speed, determinism and flexibility. Preliminary results, computational demands and possibilities for extension will be discussed.
	Slides MOOCB03 [10.412 MB]
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THPMB051	Development of Intelligent Alarm Message System at TPS	3363
	C.C. Liang, C.H. Chang, C.H. Chen, J. Chen, J.Y. Chen, Y.-S. Cheng, M.-S. Chiu, S. Fann, C.S. Huang, C.-C. Kuo, T.Y. Lee, Y.C. Lin, Y.-C. Liu, H.-J. Tsai, F.H. Tseng, I.C. Yang, T.-C. Yu NSRRC, Hsinchu, Taiwan
	The traditional alarm systems usually set up/low limit for various signals. When the acquired values exceed the limits, the alarm system would be activated. The proposed system in this article can focus on various possible events with many kinds of signals for response judgments. During alarm calling period, data can also be announced and recorded. The system can also monitor various events according to different time shifts. Integrating LabVIEW, mobile phone, AT-command and Bluetooth communication, the system can handle factory broadcast, sending E-mail and SMS message. The above sound and words messages can be set directly at the home-made software interface. The new intelligent alarm system can eliminate the procedure made by man with the added event recording, system stability improvement and debugging function in wider application fields.
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THPOW035	Statistical Analysis Package for the Opearion Monitoring at the TLS	4019
	Y.K. Lin, H.H. Chen, H.C. Chen, S.J. Huang, C.H. Kuo, A.P. Lee, J.A. Li NSRRC, Hsinchu, Taiwan
	Machine operation parameters and interruptions to user beam at Taiwan Light Source (TLS) and Taiwan Photon Source (TPS) are recorded in databases. The data retrieve to TLS uses the File Transfer Protocol (FTP) with two separated databases 10 Hz and 0.1 Hz for quick or detail data analysis options. TPS data storage uses the open source database PostgreSQL. A statistical analysis package HISTORY has been writ-ten in Microsoft Visual C to perform operation monitor-ing and data mining. Operation and failure statistics func-tions are produced for performance evaluation and User Administration & Promotion Office user time statistics.
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THPOY018	Main Operation Improvements on Taiwan Light Source	4125
	C.H. Kuo, H.H. Chen, H.C. Chen, K.T. Hsu, S.J. Huang, J.A. Li, C.Y. Liao, M.-C. Lin, Y.K. Lin, Y.-C. Liu NSRRC, Hsinchu, Taiwan
	With the beam energy of 1.5 GeV, the storage ring of Taiwan Light Source (TLS) in National Synchrotron Radiation Research Center (NSRRC) has provided research service to users for more than twenty years. It takes a lot of efforts to keep this accelerator reliable and to improve its stability. NSRRC has finished the construction and commissioning of the new 3-GeV accelerator Taiwan Photon Source (TPS) which will be opened to users with limited beam lines in 2016. On the other hand, TLS has 25 beamlines and still serves users very well as being benefited by its mature operation skills and continuous efforts on maintenance and system improvement. Main challenges and corresponding solutions on TLS operation in these recent years t are presented herein, together with the statistics on operation performance.
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THPOY024	Demagnetization of an Entire Accelerator Vault	4143
	T. Planche, R.A. Baartman, S.R. Koscielniak TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada G. Arias, T.C. LeRoss, K.K.S. Multani UBC, Vancouver, B.C., Canada D.A. Bissky Dziadyk McGill University, Montréal,, Canada T. Zuiderveen University of Ottawa, Ottawa, Ontario, Canada
	The ARIEL electron linac produced its first high-energy beam on 31 September 2014. Despite over 40 years of experience with ion beams, transporting electrons constituted a new challenge for TRIUMF. With good reason: the difference in rest mass makes electrons orders of magnitude more sensitive than ions to magnetic fields (for the same kinetic energy). In this paper we show how beam steering could have been seriously compromised by the remament field from the structural steel of the building, and how this issue was addressed using a technique developed to demagnetize steel-hull ships: we degaussed the entire accelerator vault.
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THPOY025	From Standby Operation to Patient Treatment in 13 Months: Setting Up the MIT Accelerator Team	4146
	A. Peters, Th. Haberer HIT, Heidelberg, Germany U. Scheeler MIT, Marburg, Germany
	When the University Hospital Heidelberg took over the responsibility for the Marburg Ionbeam Therapy Centre (MIT), HIT as their daughter company was mandated to build up the operation team, especially for the accelerator. Based on long-standing experiences of HIT a very similar personnel concept was already available to be adapted to the MIT specialties. Within 9 months the directly started hiring process resulted in three technical teams with excellent engineers and technicians but with little or no accelerator experience. In parallel, three accelerator physicists were appointed for the executive team of MIT. Nevertheless for all hired persons a training program was set up consisting of technical instructions, lectures on fundamental accelerator physics and control system basics. These common trainings were complemented by individual skills development schedules for the tasks in the technical teams. HIT accelerator experts substantially carried out the recommissioning but in addition the new MIT employees were trained in designated shifts in the control room. Thus after only 13 months the MIT operation crew was able to operate the accelerator facility from the first patient treatment day on.
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THPOY026	Recent Challenges for the 1.5 GeV MAMI-C Accelerator at JGU Mainz	4149
	M. Dehn, K. Aulenbacher, H.-J. Kreidel, F. Nillius, B.S. Schlimme, V. Tioukine IKP, Mainz, Germany
	Funding: Work supported by DFG (CRC 1044) and the German federal state of Rhineland-Palatinate The MAMI-C accelerator is a 1.5 GeV microtron cascade for up to 100 μA polarised electrons operating CW at Mainz University. Recent experiments required spin manipulations and beam energies not routinely supported by the accelerator. In particular, this required a spin orientation vertical to the accelerator plane and operation at beam energies which could not be achieved by the so far established methods. This paper describes the challenges to provide and to characterise the unusual modes of operation.
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THPOY027	Commissioning Status of SuperKEKB Injector Linac	4152
	M. Satoh, M. Akemoto, D.A. Arakawa, Y. Arakida, A. Enomoto, Y. Enomoto, S. Fukuda, Y. Funakoshi, K. Furukawa, T. Higo, H. Honma, N. Iida, M. Ikeda, H. Iwase, H. Kaji, K. Kakihara, T. Kamitani, H. Katagiri, S. Kazama, M. Kikuchi, H. Koiso, S. Matsumoto, T. Matsumoto, H. Matsushita, S. Michizono, K. Mikawa, T. Mimashi, T. Miura, F. Miyahara, T. Mori, A. Morita, H. Nakajima, K. Nakao, T. Natsui, Y. Ogawa, Y. Ohnishi, S. Ohsawa, F. Qiu, I. Satake, D. Satoh, Y. Seimiya, T. Shidara, A. Shirakawa, M. Suetake, H. Sugimoto, T. Suwada, M. Tanaka, M. Tawada, Y. Yano, K. Yokoyama, M. Yoshida, R. Zhang, X. Zhou KEK, Ibaraki, Japan
	The SuperKEKB main ring is currently being constructed for aiming at the peak luminosity of 8 x 10³⁵ cm^-2s⁻¹. The electron/positron injector linac upgrade is also going on for increasing the intensity of bunch charge with keeping the small emittance. The key upgrade issues are the construction of positron damping ring, a new positron capture system, and a low emittance photo-cathode rf electron source. The injector linac beam commissioning started in the October of 2013. In this paper, we report the present status and future plan of SuperKEKB injector commissioning.
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THPOY028	Operational Status of HLS-II	4155
	J.Y. Li, G. Huang, W. Wei, W. Xu, K. Xuan, Y.L. Yang, Z.R. Zhou USTC/NSRL, Hefei, Anhui, People's Republic of China
	After a major renovation, the Hefei light source (HLS), renamed HLS_II, was brought into operation in the beginning of 2015. The operational result shows that the HLS-II not only provides much brighter synchrotron radiation beam for various users, but also shows much higher reliability than the old light source. This paper first gives an overview of the HLS-II. The overall performance of the light source is then summarized in this paper. Some measured key parameters of the light source, including emittance, orbit stability, beam lifetime and so on, are also presented.
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THPOY030	Dependability Studies for CERN PS Booster RF System Upgrade	4159
	O. Rey Orozko, A. Apollonio, M. Jonker, M.M. Paoluzzi CERN, Geneva, Switzerland
	Radio frequency systems are a vital part of almost all accelerators. The request for a higher beam bright-ness from the injector chain of CERN's Large Hardon Collider, as demanded by the future High-Luminosity program, has motivated, among many other upgrades, the construction of new RF equipment in the PS Boost-er. Because availability and reliability have an im-portant impact on the luminosity production in a col-lider environment, dependability studies have been performed on the new design of the RF system assum-ing different maintenance strategies. This paper will present the model, made with the commercial software Isograph, for dependability studies. In addition, a comparative study will be presented between the re-sults obtained from Isograph and from an analytical analysis.
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THPOY031	A Holistic Approach to Accelerator Reliability Modeling	4163
	M. Reščič, R. Seviour University of Huddersfield, Huddersfield, United Kingdom W. Blokland ORNL, Oak Ridge, Tennessee, USA
	Reliability has been identified as a key factor limiting the development of certain particle accelerator applications, for example Accelerator-Driven Systems (ADS) for energy production and waste-transmutation. Previous studies of particle accelerator reliability have been undertaken using conventional techniques, such as Reliability Block Diagrams (RBD), Fault Tree Analysis (FTA), etc. Although limited data surrounding components and their failure modes limits the applicability of conventional techniques for analysing the reliability of particle accelerators. In addition industrial applications of particle accelerators, i.e. energy production, require a real time response to failure. In this paper we examine a holistic approach to accelerator reliability modelling using Electric Network Frequency (ENF) criterion to look for emergent behaviour of the particle accelerator, from complex datasets, such as beam current/charge, created by the diagnostics systems during the machines operation. To look for predictive characteristics just prior to a machine trip. Report from the DOE ADS White Paper Working Group, Stuart Henderson, Fermilab, October 26, 2011
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Paper

Title

Page

Distributed Matching Scheme and a Deterministic Flexible Matching Algorithm for Arbitrary Systems

65

Y.-C. Chao
SLAC, Menlo Park, California, USA
Y.-C. Chao
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada

Paradigm complementary to conventional matching is explored, with matching distributed across the entire line. This can have varying degrees of advantage depending on acuteness of issues in a conventional scheme: - Limited flexibility and space constraint for matching section - Neglect of beam property away from matching section - Excessive envelope/magnet strength caused by matching (sub-optimal tradeoff) - Local envelope blowup inside matching section - Low tolerance to errors and lack of recourse to matching failure - Slow computation process - Unpredictable solution - Limited option/insight/control on implementing solution. A scheme was envisioned to address these, backed by recently developed matching algorithm tailored to this demand. It can be applied to any beamline configuration, including coupled 4D or intervening elements, providing deterministic, rigorous solutions allowing insight and control pre-implementation. It also shows promise of global optimum. Combined with the distributed scheme this algorithm promises additional advantages of speed, determinism and flexibility. Preliminary results, computational demands and possibilities for extension will be discussed.

Slides MOOCB03 [10.412 MB]

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THPMB051

Development of Intelligent Alarm Message System at TPS

3363

C.C. Liang, C.H. Chang, C.H. Chen, J. Chen, J.Y. Chen, Y.-S. Cheng, M.-S. Chiu, S. Fann, C.S. Huang, C.-C. Kuo, T.Y. Lee, Y.C. Lin, Y.-C. Liu, H.-J. Tsai, F.H. Tseng, I.C. Yang, T.-C. Yu
NSRRC, Hsinchu, Taiwan

The traditional alarm systems usually set up/low limit for various signals. When the acquired values exceed the limits, the alarm system would be activated. The proposed system in this article can focus on various possible events with many kinds of signals for response judgments. During alarm calling period, data can also be announced and recorded. The system can also monitor various events according to different time shifts. Integrating LabVIEW, mobile phone, AT-command and Bluetooth communication, the system can handle factory broadcast, sending E-mail and SMS message. The above sound and words messages can be set directly at the home-made software interface. The new intelligent alarm system can eliminate the procedure made by man with the added event recording, system stability improvement and debugging function in wider application fields.

Export •

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

THPOW035

Statistical Analysis Package for the Opearion Monitoring at the TLS

4019

Y.K. Lin, H.H. Chen, H.C. Chen, S.J. Huang, C.H. Kuo, A.P. Lee, J.A. Li
NSRRC, Hsinchu, Taiwan

Machine operation parameters and interruptions to user beam at Taiwan Light Source (TLS) and Taiwan Photon Source (TPS) are recorded in databases. The data retrieve to TLS uses the File Transfer Protocol (FTP) with two separated databases 10 Hz and 0.1 Hz for quick or detail data analysis options. TPS data storage uses the open source database PostgreSQL. A statistical analysis package HISTORY has been writ-ten in Microsoft Visual C to perform operation monitor-ing and data mining. Operation and failure statistics func-tions are produced for performance evaluation and User Administration & Promotion Office user time statistics.

Export •

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

THPOY018

Main Operation Improvements on Taiwan Light Source

4125

C.H. Kuo, H.H. Chen, H.C. Chen, K.T. Hsu, S.J. Huang, J.A. Li, C.Y. Liao, M.-C. Lin, Y.K. Lin, Y.-C. Liu
NSRRC, Hsinchu, Taiwan

With the beam energy of 1.5 GeV, the storage ring of Taiwan Light Source (TLS) in National Synchrotron Radiation Research Center (NSRRC) has provided research service to users for more than twenty years. It takes a lot of efforts to keep this accelerator reliable and to improve its stability. NSRRC has finished the construction and commissioning of the new 3-GeV accelerator Taiwan Photon Source (TPS) which will be opened to users with limited beam lines in 2016. On the other hand, TLS has 25 beamlines and still serves users very well as being benefited by its mature operation skills and continuous efforts on maintenance and system improvement. Main challenges and corresponding solutions on TLS operation in these recent years t are presented herein, together with the statistics on operation performance.

Export •

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

THPOY024

Demagnetization of an Entire Accelerator Vault

4143

T. Planche, R.A. Baartman, S.R. Koscielniak
TRIUMF, Canada's National Laboratory for Particle and Nuclear Physics, Vancouver, Canada
G. Arias, T.C. LeRoss, K.K.S. Multani
UBC, Vancouver, B.C., Canada
D.A. Bissky Dziadyk
McGill University, Montréal,, Canada
T. Zuiderveen
University of Ottawa, Ottawa, Ontario, Canada

The ARIEL electron linac produced its first high-energy beam on 31 September 2014. Despite over 40 years of experience with ion beams, transporting electrons constituted a new challenge for TRIUMF. With good reason: the difference in rest mass makes electrons orders of magnitude more sensitive than ions to magnetic fields (for the same kinetic energy). In this paper we show how beam steering could have been seriously compromised by the remament field from the structural steel of the building, and how this issue was addressed using a technique developed to demagnetize steel-hull ships: we degaussed the entire accelerator vault.

Export •

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

THPOY025

From Standby Operation to Patient Treatment in 13 Months: Setting Up the MIT Accelerator Team

4146

A. Peters, Th. Haberer
HIT, Heidelberg, Germany
U. Scheeler
MIT, Marburg, Germany

When the University Hospital Heidelberg took over the responsibility for the Marburg Ionbeam Therapy Centre (MIT), HIT as their daughter company was mandated to build up the operation team, especially for the accelerator. Based on long-standing experiences of HIT a very similar personnel concept was already available to be adapted to the MIT specialties. Within 9 months the directly started hiring process resulted in three technical teams with excellent engineers and technicians but with little or no accelerator experience. In parallel, three accelerator physicists were appointed for the executive team of MIT. Nevertheless for all hired persons a training program was set up consisting of technical instructions, lectures on fundamental accelerator physics and control system basics. These common trainings were complemented by individual skills development schedules for the tasks in the technical teams. HIT accelerator experts substantially carried out the recommissioning but in addition the new MIT employees were trained in designated shifts in the control room. Thus after only 13 months the MIT operation crew was able to operate the accelerator facility from the first patient treatment day on.

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THPOY026

Recent Challenges for the 1.5 GeV MAMI-C Accelerator at JGU Mainz

4149

M. Dehn, K. Aulenbacher, H.-J. Kreidel, F. Nillius, B.S. Schlimme, V. Tioukine
IKP, Mainz, Germany

Funding: Work supported by DFG (CRC 1044) and the German federal state of Rhineland-Palatinate
The MAMI-C accelerator is a 1.5 GeV microtron cascade for up to 100 μA polarised electrons operating CW at Mainz University. Recent experiments required spin manipulations and beam energies not routinely supported by the accelerator. In particular, this required a spin orientation vertical to the accelerator plane and operation at beam energies which could not be achieved by the so far established methods. This paper describes the challenges to provide and to characterise the unusual modes of operation.

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THPOY027

Commissioning Status of SuperKEKB Injector Linac

4152

M. Satoh, M. Akemoto, D.A. Arakawa, Y. Arakida, A. Enomoto, Y. Enomoto, S. Fukuda, Y. Funakoshi, K. Furukawa, T. Higo, H. Honma, N. Iida, M. Ikeda, H. Iwase, H. Kaji, K. Kakihara, T. Kamitani, H. Katagiri, S. Kazama, M. Kikuchi, H. Koiso, S. Matsumoto, T. Matsumoto, H. Matsushita, S. Michizono, K. Mikawa, T. Mimashi, T. Miura, F. Miyahara, T. Mori, A. Morita, H. Nakajima, K. Nakao, T. Natsui, Y. Ogawa, Y. Ohnishi, S. Ohsawa, F. Qiu, I. Satake, D. Satoh, Y. Seimiya, T. Shidara, A. Shirakawa, M. Suetake, H. Sugimoto, T. Suwada, M. Tanaka, M. Tawada, Y. Yano, K. Yokoyama, M. Yoshida, R. Zhang, X. Zhou
KEK, Ibaraki, Japan

The SuperKEKB main ring is currently being constructed for aiming at the peak luminosity of 8 x 10³⁵ cm^-2s⁻¹. The electron/positron injector linac upgrade is also going on for increasing the intensity of bunch charge with keeping the small emittance. The key upgrade issues are the construction of positron damping ring, a new positron capture system, and a low emittance photo-cathode rf electron source. The injector linac beam commissioning started in the October of 2013. In this paper, we report the present status and future plan of SuperKEKB injector commissioning.

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THPOY028

Operational Status of HLS-II

4155

J.Y. Li, G. Huang, W. Wei, W. Xu, K. Xuan, Y.L. Yang, Z.R. Zhou
USTC/NSRL, Hefei, Anhui, People's Republic of China

After a major renovation, the Hefei light source (HLS), renamed HLS_II, was brought into operation in the beginning of 2015. The operational result shows that the HLS-II not only provides much brighter synchrotron radiation beam for various users, but also shows much higher reliability than the old light source. This paper first gives an overview of the HLS-II. The overall performance of the light source is then summarized in this paper. Some measured key parameters of the light source, including emittance, orbit stability, beam lifetime and so on, are also presented.

Export •

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THPOY030

Dependability Studies for CERN PS Booster RF System Upgrade

4159

O. Rey Orozko, A. Apollonio, M. Jonker, M.M. Paoluzzi
CERN, Geneva, Switzerland

Radio frequency systems are a vital part of almost all accelerators. The request for a higher beam bright-ness from the injector chain of CERN's Large Hardon Collider, as demanded by the future High-Luminosity program, has motivated, among many other upgrades, the construction of new RF equipment in the PS Boost-er. Because availability and reliability have an im-portant impact on the luminosity production in a col-lider environment, dependability studies have been performed on the new design of the RF system assum-ing different maintenance strategies. This paper will present the model, made with the commercial software Isograph, for dependability studies. In addition, a comparative study will be presented between the re-sults obtained from Isograph and from an analytical analysis.

Export •

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

THPOY031

A Holistic Approach to Accelerator Reliability Modeling

4163

M. Reščič, R. Seviour
University of Huddersfield, Huddersfield, United Kingdom
W. Blokland
ORNL, Oak Ridge, Tennessee, USA

Reliability has been identified as a key factor limiting the development of certain particle accelerator applications, for example Accelerator-Driven Systems (ADS) for energy production and waste-transmutation*. Previous studies of particle accelerator reliability have been undertaken using conventional techniques, such as Reliability Block Diagrams (RBD), Fault Tree Analysis (FTA), etc. Although limited data surrounding components and their failure modes limits the applicability of conventional techniques for analysing the reliability of particle accelerators. In addition industrial applications of particle accelerators, i.e. energy production, require a real time response to failure. In this paper we examine a holistic approach to accelerator reliability modelling using Electric Network Frequency (ENF) criterion to look for emergent behaviour of the particle accelerator, from complex datasets, such as beam current/charge, created by the diagnostics systems during the machines operation. To look for predictive characteristics just prior to a machine trip.
* Report from the DOE ADS White Paper Working Group, Stuart Henderson, Fermilab, October 26, 2011

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