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Title: Shielding experiments by the JASMIN Collaboration at Fermilab (II) - radioactivity measurement induced by secondary particles from the anti-proton production target

The JASMIN Collaboration has performed an experiment to conduct measurements of nuclear reaction rates around the anti-proton production (Pbar) target at the Fermi National Accelerator Laboratory (FNAL). At the Pbar target station, the target, consisting of an Inconel 600 cylinder, was irradiated by a 120 GeV/c proton beam from the FNAL Main Injector. The beam intensity was 3.6 x 1012 protons per second. The samples of Al, Nb, Cu, and Au were placed near the target to investigate the spatial and energy distribution of secondary particles emitted from it. After irradiation, the induced activities of the samples were measured by studying their gamma ray spectra using HPGe detectors. The production rates of 30 nuclides induced in Al, Nb, Cu, Au samples were obtained. These rates increase for samples placed in a forward (small angle) position relative to the target. The angular dependence of these reaction rates becomes larger for increasing threshold energy. These experimental results are compared with Monte Carlo calculations. The calculated results generally agree with the experimental results to within a factor of 2 to 3.
Authors:
 [1] ;  [2] ;  [2] ;  [2] ;  [2] ;  [3] ;  [3] ;  [4] ;  [5] ;  [5] ;  [5] ;  [5] ;  [5] ;  [6]
  1. Kyoto Univ., Osaka (Japan)
  2. Japan Atomic Energy Agency, Ibaraki (Japan)
  3. High Energy Accelerator Research Organization, Ibaraki (Japan)
  4. High Energy Accelerator Research Organization, Ibaraki (Japan); Tsukuba Univ., Ibaraki (Japan)
  5. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  6. Shimizu Corp. Etchujima, Tokyo (Japan)
Publication Date:
OSTI Identifier:
1029662
Report Number(s):
FERMILAB-PUB--11-406-APC
Journal ID: ISSN 0374-4884; TRN: US1105836
Grant/Contract Number:
AC02-07CH11359
Type:
Accepted Manuscript
Journal Name:
Journal of the Korean Physical Society
Additional Journal Information:
Journal Volume: 59; Journal Issue: 23; Conference: International Conference on Nuclear Data for Science and Technology, Jeju Island (Republic of Korea), 26-30 Apr 2010; Journal ID: ISSN 0374-4884
Publisher:
Korean Physical Society
Research Org:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 43 PARTICLE ACCELERATORS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ENERGY SPECTRA; FERMILAB ACCELERATOR; INCONEL 600; IRRADIATION; ISOTOPES; NUCLEAR REACTIONS; PRODUCTION; PROTON BEAMS; PROTONS; RADIOACTIVITY; REACTION KINETICS; SHIELDING; SPECTRA; TARGETS; THRESHOLD ENERGY Experiment-HEP