PERFORMANCE OF A LIQUID XENON CALORIMETER CRYOGENIC SYSTEM FOR THE MEG EXPERIMENT
Creators
- 1. KEK, High Energy Accelerator Research Organization 1-1 Oho, Tsukuba, Ibaraki 305-0801 (Japan)
- 2. ICEPP, University of Tokyo 7-3-1 Hongo, Bunkyo, Tokyo 113-0033 (Japan)
- 3. Iwatani Industrial Gases Corp. Moriyama, Shiga (Japan)
Description
The μ-particle rare decay physics experiment, the MU-E-GAMMA (MEG) experiment, will soon be operational at the Paul Scherrer Institute in Zurich. To achieve the extremely high sensitivity required to detect gamma rays, 800 L of liquid xenon is used as the medium in the calorimeter, viewed by 830 photomultiplier tubes (PMT) immersed in it. The required liquid xenon purity is of the order of ppb of water, and is obtained by using a cryogenic centrifugal pump and cold molecular sieves. The heat load of the calorimeter at 165 K is to be approximately 120 W, which is removed by a pulse-tube cryocooler developed at KEK and built by Iwatani Industrial Gas Corp., with a cooling power of about 200 W at 165 K. The cryogenic system is also equipped with a 1000-L dewar. This paper describes the results of an initial performance test of each cryogenic component
Additional details
Identifiers
- DOI
- 10.1063/1.2908471;
Publishing Information
- Journal Title
- AIP Conference Proceedings
- Journal Volume
- 985
- Journal Issue
- 1
- Journal Page Range
- p. 1193-1200
- ISSN
- 0094-243X
- CODEN
- APCPCS
Conference
- Title
- Advances in cryogenic engineering
- Acronym
- Cryogenic Engineering Conference - CEC
- Dates
- 16-20 Jul 2007
- Place
- Chattanooga, TN (United States)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40017518
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- COOLING; CRYOGENICS; GAMMA DETECTION; MOLECULAR SIEVES; PARTICLE DECAY; PARTICLE IDENTIFICATION; PERFORMANCE; PHOTOMULTIPLIERS; PULSES; SENSITIVITY; SHOWER COUNTERS; XENON
- Descriptors DEC
- ADSORBENTS; DECAY; DETECTION; ELEMENTS; FLUIDS; GASES; MEASURING INSTRUMENTS; NONMETALS; PHOTOTUBES; RADIATION DETECTION; RADIATION DETECTORS; RARE GASES
Optional Information
- Notes
- (c) 2008 American Institute of Physics