Stability analysis of the RF linac based on an AR model

R. Kato; S. Isaka; H. Sakaki; S. Kashiwagi; G. Isoyama

doi:10.1016/j.nima.2004.04.056

Stability analysis of the RF linac based on an AR model

R. Kato, S. Isaka, H. Sakaki, S. Kashiwagi, G. Isoyama

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

We are pursing operational stability of the RF linac with a method of system analysis. The RF phase and the power for the pre-buncher have been measured, together with environmental parameters including temperatures of the main components, the room temperatures and the AC line voltage. The measured data have been analyzed with the autoregressive model, and the feedback structure of the system has been derived from noise contribution ratios and impulse responses analysis. It was found that the AC line voltage and the temperatures of the klystron room significantly affected operational stability of the linac.

Original language	English
Pages (from-to)	244-248
Number of pages	5
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	528
Issue number	1-2
DOIs	https://doi.org/10.1016/j.nima.2004.04.056
Publication status	Published - 2004 Aug 1
Externally published	Yes
Event	Proceedings of the 25th International Free Electron Laser - Tsukuba,Ibaraki, Japan Duration: 2003 Sept 8 → 2003 Sept 12

Keywords

Linear accelerators
Noise
Time-series analysis

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nima.2004.04.056

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title = "Stability analysis of the RF linac based on an AR model",

abstract = "We are pursing operational stability of the RF linac with a method of system analysis. The RF phase and the power for the pre-buncher have been measured, together with environmental parameters including temperatures of the main components, the room temperatures and the AC line voltage. The measured data have been analyzed with the autoregressive model, and the feedback structure of the system has been derived from noise contribution ratios and impulse responses analysis. It was found that the AC line voltage and the temperatures of the klystron room significantly affected operational stability of the linac.",

keywords = "Linear accelerators, Noise, Time-series analysis",

author = "R. Kato and S. Isaka and H. Sakaki and S. Kashiwagi and G. Isoyama",

year = "2004",

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day = "1",

doi = "10.1016/j.nima.2004.04.056",

language = "English",

volume = "528",

pages = "244--248",

journal = "Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",

issn = "0168-9002",

publisher = "Elsevier",

number = "1-2",

note = "Proceedings of the 25th International Free Electron Laser ; Conference date: 08-09-2003 Through 12-09-2003",

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TY - JOUR

T1 - Stability analysis of the RF linac based on an AR model

AU - Kato, R.

AU - Isaka, S.

AU - Sakaki, H.

AU - Kashiwagi, S.

AU - Isoyama, G.

PY - 2004/8/1

Y1 - 2004/8/1

N2 - We are pursing operational stability of the RF linac with a method of system analysis. The RF phase and the power for the pre-buncher have been measured, together with environmental parameters including temperatures of the main components, the room temperatures and the AC line voltage. The measured data have been analyzed with the autoregressive model, and the feedback structure of the system has been derived from noise contribution ratios and impulse responses analysis. It was found that the AC line voltage and the temperatures of the klystron room significantly affected operational stability of the linac.

AB - We are pursing operational stability of the RF linac with a method of system analysis. The RF phase and the power for the pre-buncher have been measured, together with environmental parameters including temperatures of the main components, the room temperatures and the AC line voltage. The measured data have been analyzed with the autoregressive model, and the feedback structure of the system has been derived from noise contribution ratios and impulse responses analysis. It was found that the AC line voltage and the temperatures of the klystron room significantly affected operational stability of the linac.

KW - Linear accelerators

KW - Noise

KW - Time-series analysis

UR - http://www.scopus.com/inward/record.url?scp=3242723162&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=3242723162&partnerID=8YFLogxK

U2 - 10.1016/j.nima.2004.04.056

DO - 10.1016/j.nima.2004.04.056

M3 - Conference article

AN - SCOPUS:3242723162

SN - 0168-9002

VL - 528

SP - 244

EP - 248

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

IS - 1-2

T2 - Proceedings of the 25th International Free Electron Laser

Y2 - 8 September 2003 through 12 September 2003

ER -

Stability analysis of the RF linac based on an AR model

Abstract

Keywords

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