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Title: Test of the CLAS12 RICH large-scale prototype in the direct proximity focusing configuration

A large area ring-imaging Cherenkov detector has been designed to provide clean hadron identification capability in the momentum range from 3 GeV/c up to 8 GeV/c for the CLAS12 experiments at the upgraded 12 GeV continuous electron beam accelerator facility of Jefferson Laboratory. The adopted solution foresees a novel hybrid optics design based on aerogel radiator, composite mirrors and high-packed and high-segmented photon detectors. Cherenkov light will either be imaged directly (forward tracks) or after two mirror reflections (large angle tracks). We report here the results of the tests of a large scale prototype of the RICH detector performed with the hadron beam of the CERN T9 experimental hall for the direct detection configuration. As a result, the tests demonstrated that the proposed design provides the required pion-to-kaon rejection factor of 1:500 in the whole momentum range.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [6] ;  [3] ;  [2] ;  [2] ;  [7] ;  [8] ;  [9] ;  [1] ;  [3] ;  [1] ;  [10] ;  [3] ;  [11] ;  [1] ;  [1] more »;  [3] ;  [9] ;  [7] ;  [1] ;  [12] ;  [3] ;  [1] ;  [13] ;  [1] « less
  1. INFN Lab. Nazionali di Frascati, Frascati (Italy)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. INFN Sezione di Ferrara, Ferrara (Italy)
  4. Duquesne Univ., Pittsburgh, PA (United States)
  5. Univ. Tecnica Federico Santa Maria, Valparaiso (Chile)
  6. INFN Sezione di Roma, gruppo Sanita and Istituto Superiore di Sanita, Rome (Italy)
  7. Univ. of Glasgow, Glasgow (Scotland)
  8. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  9. INFN Sezione di Bari, Bari (Italy)
  10. INFN Lab. Nazionali di Frascati, Frascati (Italy); Univ. of Glasgow, Glasgow (Scotland)
  11. INFN Sezione Genova, Genova (Italy)
  12. INFN Lab. Nazionali di Frascati, Frascati (Italy); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  13. INFN Sezione di Ferrara, Ferrara (Italy); Univ. Tecnica Federico Santa Maria, Valparaiso (Chile)
Publication Date:
OSTI Identifier:
1245405
Report Number(s):
JLAB-PHY--16-2238; DOE/OR/23177--3786; arXiv:1509.02818
Journal ID: ISSN 1434-6001; PII: 390
Type:
Accepted Manuscript
Journal Name:
European Physical Journal. A
Additional Journal Information:
Journal Volume: 52; Journal Issue: 2; Journal ID: ISSN 1434-6001
Publisher:
Springer
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS