New Cryogenic Controls for the Tevatron Low Temperature Upgrade

Norris, B.; Brubaker, J.; Franck, A.; Lublinsky, B.; Lucas, Peter W.; Theilacker, J.; Seino, K.; Smolucha, J.

doi:10.1007/978-1-4615-2522-6_145

Cited by 6 publications

(1 citation statement)

References 4 publications

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“…The FSM software is the highest level of software in the cryogenic control system [7]. It is used to automate such tasks as quench recovery, cooldown, cold compressor pumpdown, power lead control, etc..…”

Section: Surge Recovery Techniquesmentioning

confidence: 99%

Surge Recovery Techniques for the Tevatron Cold Compressors

Martinez¹,

Klebaner²,

Makara³

et al. 2006

AIP Conference Proceedings

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The Fermilab Tevatron cryogenic system utilizes high-speed centrifugal cold compressors, made by Ishikawajima-Harima Heavy Industries Co. Ltd. (IHI), for highenergy operations [1]. The compressor is designed to pump 60 g/s of 3.6 K saturated helium vapor at a pressure ratio of 2.8, with an off-design range of 40 to 70 g/s and operating speeds between 40 and 95 krpm. Since initial commissioning in 1993, Tevatron transient conditions such as quench recovery have led to multiple-location machine trips as a result of the cold compressors entering the surge regime. Historically, compressors operating at lower inlet pressures and higher speeds have been especially susceptible to these machine trips and it was not uncommon to have multiple compressor trips during large multiple-house quenches. In order to cope with these events and limit accelerator down time, surge recovery techniques have been implemented in an attempt to prevent the compressors from tripping once the machine entered this surge regime. This paper discusses the different methods of surge recovery that have been employed. Data from tests performed at the Cryogenic Test Facility at Fermilab as well as actual Tevatron operational data were utilized. In order to aid in the determination of the surge region, a full mapping study was undertaken to characterize the entire pressure field of the cold compressor. These techniques were then implemented and tested at several locations in the Tevatron with some success.

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Section: Surge Recovery Techniquesmentioning

confidence: 99%

Surge Recovery Techniques for the Tevatron Cold Compressors

Martinez¹,

Klebaner²,

Makara³

et al. 2006

AIP Conference Proceedings

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Cryogenic Testing and Analysis Associated with Tevatron Lower Temperature Operation

Theilacker

1996

A Cryogenic Engineering Conference Publication

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Initial Performance of Upgraded Tevatron Cryogenic Systems

Norris

1996

A Cryogenic Engineering Conference Publication

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This report bvas prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Golaernment nor any agency thereoj nor any of their employees. makes an) \rBarranty. express or implied, or assumes arlx legal liabilit? or responsibilic for the accuracy. completeness or usefulness of any information. apparatus. product or process disclosed, or represents that its use would not infringe private& owned rights. Reference herein to anJ specific commercial product, process or service by trade name, trademark. manufacturer or otherwise, does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States Government or any agency thereoj The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Distribution Approved for public release: further dissemination unlimited.

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New Cryogenic Controls for the Tevatron Low Temperature Upgrade

Cited by 6 publications

References 4 publications

Surge Recovery Techniques for the Tevatron Cold Compressors

Surge Recovery Techniques for the Tevatron Cold Compressors

Cryogenic Testing and Analysis Associated with Tevatron Lower Temperature Operation

Initial Performance of Upgraded Tevatron Cryogenic Systems

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