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A novel liquid argon purity monitor based on 207Bi

Journal Article · · Journal of Instrumentation
 [1];  [1];  [1];  [2];  [1];  [3];  [1];  [1];  [1];  [4];  [5];  [1];  [1];  [1];  [6]
  1. Univ. of Padua (Italy)
  2. Boston Univ., MA (United States)
  3. European Organization for Nuclear Research (CERN), Geneva (Switzerland); Univ. of Texas, Arlington, TX (United States)
  4. European Organization for Nuclear Research (CERN), Geneva (Switzerland); Univ. of Padua (Italy)
  5. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
  6. École Normale Supérieure de Lyon (France)
+ Show Author Affiliations
A novel liquid argon purity monitor based on a 207Bi radioactive source, emitting monochromatic internal-conversion electrons, is presented. This new monitor allows for a very precise and fast measurement of the electronegative impurities concentration in liquid argon. It can be operated continuously in liquid argon TPC experiments without interfering with the main detector operation. Different drift lengths can be assembled for the proposed device, to assess a large range of liquid argon purities while minimizing systematic uncertainties. Two prototypes have been built and successfully operated in dedicated test stands. The results and performance are reported.
Research Organization:
Boston Univ., MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
SC0015628
OSTI ID:
3012768
Journal Information:
Journal of Instrumentation, Journal Name: Journal of Instrumentation Journal Issue: 02 Vol. 20; ISSN 1748-0221
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English

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journal July 2004
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journal June 2005
First results on ProtoDUNE-SP liquid argon time projection chamber performance from a beam test at the CERN Neutrino Platform journal December 2020
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Related Subjects

double-phase
ionization
neutrino detectors
noble liquid detectors
scintillation
time projection chambers (TPC)