A gas circulation and purification system for gas-cell-based low-energy RI-beam production

Journal Article · Wed Jun 15 00:00:00 EDT 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4953111· OSTI ID:22597991

Sonoda, T.; Wada, M.; Katayama, I.; Kojima, T. M.; Reponen, M. ^[1]; Tsubota, T. ^[2]

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1. RIKEN Nishina Center for Accelerator-Based Science, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan)
2. Tokyo KOATSU Co., Ltd., 1-9-8 Shibuya, Shibuyaku, Tokyo 150-0002 (Japan)

A gas circulation and purification system was developed at the RIKEN Radioactive Isotope Beam Factory that can be used for gas-cell-based low-energy RI-beam production. A high-flow-rate gas cell filled with one atmosphere of buffer gas (argon or helium) is used for the deceleration and thermalization of high-energy RI-beams. The exhausted buffer gas is efficiently collected using a compact dry pump and returned to the gas cell with a recovery efficiency of >97%. The buffer gas is efficiently purified using two gas purifiers as well as collision cleaning, which eliminates impurities in the gas. An impurity level of one part per billion is achieved with this method.

• OSTI ID: 22597991
• Journal Information: Review of Scientific Instruments, Vol. 87, Issue 6; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY
RADIOCHEMISTRY AND NUCLEAR CHEMISTRY
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ARGON
ATMOSPHERES
BEAM PRODUCTION
BUFFERS
EFFICIENCY
FLOW RATE
HELIUM
IMPURITIES
JAPANESE ORGANIZATIONS
PUMPS
PURIFICATION
RADIOACTIVE ION BEAMS
RADIOISOTOPES
THERMALIZATION