The Heat Loss Analysis and Commissioning of a Commercial Helium Dewar (SULI paper)

Bellamy, Marcus ; /SLAC, /New Mexico U.

Stanford Linear Accelerator Center

关键词: Instrumentation, Other,Other;    Dewars;    43 Particle Accelerators;    Processing;    Cryostats;   

DOI  :  10.2172/877997
RP-ID  :  SLAC-TN-05-060
RP-ID  :  AC02-76SF00515
RP-ID  :  877997

美国|英语

来源: UNT Digital Library

【 摘 要 】

A low temperature cryostat suitable for many different experiments will be commissioned at the cryogenic test facility at SLAC. The scope of the project is to make commission a commercial Helium dewar. The building of the top flange will be followed from its design phase through to its finished assembly. In addition, diagnostic tools such as thermometry, level detector, pressure gauge, transfer lines for He and N2, vent lines with relief valves for He and N2 will be incorporated. Instrumentation to read and plot this data will also be included. Once the cryostat is assembled, we will cool down the cryostat to measure its performance. A typical consumption rate of Helium will be measured and from this, the overall heat leak to the dewar will be calculated. A processing instrumentation diagram (PID) of the dewar system was created with SolidEdge and was later approved and published as an official SLAC document. The plots comparing the liquid level changes of the 36 inch probe with the time and the heat loss as a function of time proved to be a valid indication that the data was interpreted and recorded correctly and that the dewar was put together successfully.