Dynamic modeling and simulation of liquid helium level in SRF cryomodule for BEPCII

F. Y. Xu; L. Wang; G. D. Yang; L. X. Jia

doi:10.1063/1.2202538

Dynamic modeling and simulation of liquid helium level in SRF cryomodule for BEPCII

F. Y. Xu^*
, L. Wang
, G. D. Yang
, L. X. Jia

^*Corresponding author for this work

School of Electrical Engineering and Automation

Harbin Institute of Technology
Brookhaven National Laboratory

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Two 500MHz superconducting RF cavities will be applied for Beijing Electron-Positron Collider Upgrade (BEPCII), and their cooling system is being built. In addition to limiting the pressure fluctuations within ± 3mbar, the fluctuations of the liquid helium level in the cryomodules have to be kept within ±1% during the operation of SRF cavities. Due to relatively long distances between the distribution valve box and the two cavity cryostats, a time-delay problem in the level control loop arises, which will lead to a long commissioning time in the future. Hence, a dynamic process simulation model for the level control loop is presented in this paper. The basic dynamic response characteristics of the level control and optimized PID controller parameters for one of the SRF cavity are presented.

Original language	English
Title of host publication	ADVANCES IN CRYOGENIC ENGINEERING
Subtitle of host publication	Transactions of the Cryogenic Engineering Conference, CEC, Volume 51B
Pages	1203-1210
Number of pages	8
DOIs	https://doi.org/10.1063/1.2202538
State	Published - 27 Apr 2006
Event	ADVANCES IN CRYOGENIC ENGINEERING: Transactions of the Cryogenic Engineering Conference, CEC - Keystone, CO, United States Duration: 29 Aug 2005 → 2 Sep 2005

Publication series

Name	AIP Conference Proceedings
Volume	823 II
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	ADVANCES IN CRYOGENIC ENGINEERING: Transactions of the Cryogenic Engineering Conference, CEC
Country/Territory	United States
City	Keystone, CO
Period	29/08/05 → 2/09/05

Keywords

Cryogenics
Fluid dynamic modeling
Liquid level control
SRF cavity

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10.1063/1.2202538

Cite this

@inproceedings{f159f518b5f74102a280c07f5e97826b,

title = "Dynamic modeling and simulation of liquid helium level in SRF cryomodule for BEPCII",

abstract = "Two 500MHz superconducting RF cavities will be applied for Beijing Electron-Positron Collider Upgrade (BEPCII), and their cooling system is being built. In addition to limiting the pressure fluctuations within ± 3mbar, the fluctuations of the liquid helium level in the cryomodules have to be kept within ±1\% during the operation of SRF cavities. Due to relatively long distances between the distribution valve box and the two cavity cryostats, a time-delay problem in the level control loop arises, which will lead to a long commissioning time in the future. Hence, a dynamic process simulation model for the level control loop is presented in this paper. The basic dynamic response characteristics of the level control and optimized PID controller parameters for one of the SRF cavity are presented.",

keywords = "Cryogenics, Fluid dynamic modeling, Liquid level control, SRF cavity",

author = "Xu, \{F. Y.\} and L. Wang and Yang, \{G. D.\} and Jia, \{L. X.\}",

year = "2006",

month = apr,

day = "27",

doi = "10.1063/1.2202538",

language = "英语",

isbn = "0735403171",

series = "AIP Conference Proceedings",

pages = "1203--1210",

booktitle = "ADVANCES IN CRYOGENIC ENGINEERING",

note = "ADVANCES IN CRYOGENIC ENGINEERING: Transactions of the Cryogenic Engineering Conference, CEC ; Conference date: 29-08-2005 Through 02-09-2005",

}

Xu, FY, Wang, L, Yang, GD & Jia, LX 2006, Dynamic modeling and simulation of liquid helium level in SRF cryomodule for BEPCII. in ADVANCES IN CRYOGENIC ENGINEERING: Transactions of the Cryogenic Engineering Conference, CEC, Volume 51B. AIP Conference Proceedings, vol. 823 II, pp. 1203-1210, ADVANCES IN CRYOGENIC ENGINEERING: Transactions of the Cryogenic Engineering Conference, CEC, Keystone, CO, United States, 29/08/05. https://doi.org/10.1063/1.2202538

Dynamic modeling and simulation of liquid helium level in SRF cryomodule for BEPCII. / Xu, F. Y.; Wang, L.; Yang, G. D. et al.
ADVANCES IN CRYOGENIC ENGINEERING: Transactions of the Cryogenic Engineering Conference, CEC, Volume 51B. 2006. p. 1203-1210 (AIP Conference Proceedings; Vol. 823 II).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Dynamic modeling and simulation of liquid helium level in SRF cryomodule for BEPCII

AU - Xu, F. Y.

AU - Wang, L.

AU - Yang, G. D.

AU - Jia, L. X.

PY - 2006/4/27

Y1 - 2006/4/27

N2 - Two 500MHz superconducting RF cavities will be applied for Beijing Electron-Positron Collider Upgrade (BEPCII), and their cooling system is being built. In addition to limiting the pressure fluctuations within ± 3mbar, the fluctuations of the liquid helium level in the cryomodules have to be kept within ±1% during the operation of SRF cavities. Due to relatively long distances between the distribution valve box and the two cavity cryostats, a time-delay problem in the level control loop arises, which will lead to a long commissioning time in the future. Hence, a dynamic process simulation model for the level control loop is presented in this paper. The basic dynamic response characteristics of the level control and optimized PID controller parameters for one of the SRF cavity are presented.

AB - Two 500MHz superconducting RF cavities will be applied for Beijing Electron-Positron Collider Upgrade (BEPCII), and their cooling system is being built. In addition to limiting the pressure fluctuations within ± 3mbar, the fluctuations of the liquid helium level in the cryomodules have to be kept within ±1% during the operation of SRF cavities. Due to relatively long distances between the distribution valve box and the two cavity cryostats, a time-delay problem in the level control loop arises, which will lead to a long commissioning time in the future. Hence, a dynamic process simulation model for the level control loop is presented in this paper. The basic dynamic response characteristics of the level control and optimized PID controller parameters for one of the SRF cavity are presented.

KW - Cryogenics

KW - Fluid dynamic modeling

KW - Liquid level control

KW - SRF cavity

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DO - 10.1063/1.2202538

M3 - 会议稿件

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BT - ADVANCES IN CRYOGENIC ENGINEERING

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Y2 - 29 August 2005 through 2 September 2005

ER -

Dynamic modeling and simulation of liquid helium level in SRF cryomodule for BEPCII

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