900-L liquid xenon cryogenic system operation for the MEG experiment

A cryogenic system for the MEG (muon rare decay) experiment has started operation at the Paul Sherrer Institute in Zurich. The main part of the MEG detector is the 900-L liquid xenon calorimeter for gamma ray detection, equipped with 850 photo multipliers directly immersed in liquid xenon. A 200 W p...

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Detalles Bibliográficos
Autores principales: Haruyama, T, Kasami, K, Mihara, S, Hisamatsu, Y, Iawamoto, W, Mori, T, Nishiguchi, H, Otani, W, Sawada, R, Uchiyama, Y, Nishitani, T
Lenguaje:eng
Publicado: 2009
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/2002144
Descripción
Sumario:A cryogenic system for the MEG (muon rare decay) experiment has started operation at the Paul Sherrer Institute in Zurich. The main part of the MEG detector is the 900-L liquid xenon calorimeter for gamma ray detection, equipped with 850 photo multipliers directly immersed in liquid xenon. A 200 W pulse tube cryocooler enabled LN2-free operation of this calorimeter. A liquid purification system; using a liquid pump and a zero boil-off 1000-L cryogenic buffer dewar is also included in the system. The first entire engineering run was carried out in November-December 2007 and satisfactory cryogenic performances were confirmed.

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