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Persistent URL http://purl.org/net/epubs/work/53961
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Record Id 53961
Title COOL-IT: A HEAT EXCHANGER SYSTEM TO PROVIDE GASEOUS HELIUM AT INTERMEDIATE TEMPERATURES FOR SRF LINAC
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Abstract ALICE, a prototype accelerator developed at the Daresbury laboratory UK, has successfully demonstrated the energy‐recovery technique by circulating the electron beam to more than 20 MeV. At the heart of ALICE is a superconducting linac operating at 2 K. At high average‐current operation the performance of Superconducting RF (SRF) cavities suffer from instabilities due to the generation of higher‐order modes (HOM) as well as microphonics. HOMs are extracted out of the cavities using HOM absorbers operating at 80 K. This, however, increases the demand for cooling power at intermediate temperatures, i.e. at 80 K and 5 K, by more than an order of magnitude. In order to provide this extra cooling capacity with gaseous helium a new cryogenic system, ‘COOL‐IT,’ (System for cooling to intermediate temperatures) is being developed. It will provide two streams of helium gases at 80 K and 5 K. COOL‐IT uses a set of heat exchangers cooled by liquid helium and liquid nitrogen to generate two cold streams. It will be integrated into the existing cryo‐system for ALICE for automatic operation. This paper describes the COOL‐IT system in detail.
Organisation ASTeC , CI , STFC
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Language English (EN)
Type Details URI(s) Local file(s) Year
Journal Article AIP Conf Proc 1218, no. 1 (2010): 595. https://doi.org/10.1063/1.3422407 2010
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