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Results from the commissioning of a LAr membrane cryostat prototype for LBNE.

Number: pap. n. 18

Author(s) : NORRIS B., ADAMOWSKI M., HAHN A., et al.

Summary

The Long Baseline Neutrino Experiment (LBNE) Project is planning the use of a membrane tank technology for constructing a large liquid Argon (LAr) Far Detector (FD). History shows that a membrane cryostat is the technology of choice for liquefied natural gas (LNG) transportation and storage, with hundreds of ship tankers and storage tanks being built much larger than the proposed FD. The start of construction is planned for the end of this decade. This report focuses on the performance and commissioning of a prototype, the first membrane cryostat to be used in scientific application. LBNE has designed and fabricated a membrane cryostat in collaboration with Ishikawajima-Harima Heavy Industries Co., Ltd (IHI) while building the supporting LAr and liquid nitrogen (LN2) cryogenic systems with Fermilab engineers guiding the design, installation, and testing. Data will be presented to critique the success of the initial cryogenic goals which were to demonstrate: cryogenic thermal stability for LAr in a membrane cryostat technology, achievement of high purity LAr (< 200 parts per trillion purity {oxygen equivalent}) in a non-evacuable cryostat, and the ability to maintain high purity through the use of mole sieve and copper filtering of liquid argon. This presentation will detail the requirements and performance of this prototype.

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Pages: 11-17

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Details

  • Original title: Results from the commissioning of a LAr membrane cryostat prototype for LBNE.
  • Record ID : 30011056
  • Languages: English
  • Source: Cryogenics 2014. Proceedings of the 13th IIR International Conference: Prague, Czech Republic, April 7-11, 2014.
  • Publication date: 2014/04/07

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