Thermal Uniformity of Liquid Helium in Electron Bubble Chamber.

Wang, L. ; Jia, L.

Technical Information Center Oak Ridge Tennessee

关键词: Bubble chambers;    Cryogenics;    Cryogenic fluids;    Helium;    Temperature gradients;   

RP-ID  :  DE2003804087

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

A cryogenic research apparatus to measure the movement of electrons under a high electric field in a liquid helium bath was designed and built at the Brookhaven National Laboratory and the Nevis Laboratory of Columbia University. The liquid helium chamber is a double walled cylindrical container equipped with 5 optics windows and 10 high voltage cables. To shield the liquid helium chamber against the external heat loads and to provide the thermal uniformity in the liquid helium chamber, the double walled jacket was coolde by a pumbed helium bath. The helium chamber was built into a commercial LN2/LHE cryostat. This paper presents the design and the numerical simulation analysis on thermal uniformity of the electron bubble chamber.