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LBNE Long-Baseline Neutrino Experiment Document 5985-v1

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Cool down of 33.5 Ton Prototype Cryostat

Document #:
LBNE-doc-5985-v1
Document type:
analysis note
Submitted by:
Erik A Voirin
Updated by:
Erik A Voirin
Document Created:
29 May 2012, 12:30
Contents Revised:
30 May 2012, 07:53
Metadata Revised:
30 May 2012, 07:53
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  • Public document
Modifiable by:
  • lbne
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Abstract:
SCOPE:
Parametrically analyze and study the fluid flow and temperature characteristics of cool-down of the 33.5 Ton prototype cryostat using Computational Fluid Dynamics (CFD) methods. Determine an acceptable way off cooling down the membrane without exceeding the manufacturer’s criteria for cooldown rate, maximum 15K/hr from room temperature to 200K and maximum of 10 K/hr below 200K. Attempt to keep a fairly homogeneous temperature gradient in the gas space, as if cooling a TPC and frame.
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