skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Material Activation Benchmark Experiments at the NuMI Hadron Absorber Hall in Fermilab

Abstract

In our previous study, double and mirror symmetric activation peaks found for Al and Au arranged spatially on the back of the Hadron absorber of the NuMI beamline in Fermilab were considerably higher than those expected purely from muon-induced reactions. From material activation bench-mark experiments, we conclude that this activation is due to hadrons with energy greater than 3 GeV that had passed downstream through small gaps in the hadron absorber.

Authors:
 [1]; ;  [2];  [1]; ;  [3];  [1];  [4]; ;  [2]; ; ; ; ;  [5]
  1. High Energy Accelerator Research Organization (KEK), Ibaraki-ken, 305-0801 (Japan)
  2. Japan Atomic Energy Agency, Ibaraki-ken, 319-1195 (Japan)
  3. Kyoto University Research Reactor Institute, Osaka-fu, 590-0494 (Japan)
  4. Shimizu Corporation, Tokyo, 135-8530 (Japan)
  5. Fermi National Accelerator Laboratory, IL 60510-5011 (United States)
Publication Date:
OSTI Identifier:
22436728
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nuclear Data Sheets; Journal Volume: 120; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALUMINIUM; BENCHMARKS; FERMILAB; GEV RANGE 01-10; GOLD; HADRONS; MUONS; SYMMETRY

Citation Formats

Matsumura, H., E-mail: hiroshi.matsumura@kek.jp, Matsuda, N., Kasugai, Y., Toyoda, A., Yashima, H., Sekimoto, S., Iwase, H., Oishi, K., Sakamoto, Y., Nakashima, H., Leveling, A., Boehnlein, D., Lauten, G., Mokhov, N., and Vaziri, K. Material Activation Benchmark Experiments at the NuMI Hadron Absorber Hall in Fermilab. United States: N. p., 2014. Web. doi:10.1016/J.NDS.2014.07.051.
Matsumura, H., E-mail: hiroshi.matsumura@kek.jp, Matsuda, N., Kasugai, Y., Toyoda, A., Yashima, H., Sekimoto, S., Iwase, H., Oishi, K., Sakamoto, Y., Nakashima, H., Leveling, A., Boehnlein, D., Lauten, G., Mokhov, N., & Vaziri, K. Material Activation Benchmark Experiments at the NuMI Hadron Absorber Hall in Fermilab. United States. doi:10.1016/J.NDS.2014.07.051.
Matsumura, H., E-mail: hiroshi.matsumura@kek.jp, Matsuda, N., Kasugai, Y., Toyoda, A., Yashima, H., Sekimoto, S., Iwase, H., Oishi, K., Sakamoto, Y., Nakashima, H., Leveling, A., Boehnlein, D., Lauten, G., Mokhov, N., and Vaziri, K. 2014. "Material Activation Benchmark Experiments at the NuMI Hadron Absorber Hall in Fermilab". United States. doi:10.1016/J.NDS.2014.07.051.
@article{osti_22436728,
title = {Material Activation Benchmark Experiments at the NuMI Hadron Absorber Hall in Fermilab},
author = {Matsumura, H., E-mail: hiroshi.matsumura@kek.jp and Matsuda, N. and Kasugai, Y. and Toyoda, A. and Yashima, H. and Sekimoto, S. and Iwase, H. and Oishi, K. and Sakamoto, Y. and Nakashima, H. and Leveling, A. and Boehnlein, D. and Lauten, G. and Mokhov, N. and Vaziri, K.},
abstractNote = {In our previous study, double and mirror symmetric activation peaks found for Al and Au arranged spatially on the back of the Hadron absorber of the NuMI beamline in Fermilab were considerably higher than those expected purely from muon-induced reactions. From material activation bench-mark experiments, we conclude that this activation is due to hadrons with energy greater than 3 GeV that had passed downstream through small gaps in the hadron absorber.},
doi = {10.1016/J.NDS.2014.07.051},
journal = {Nuclear Data Sheets},
number = ,
volume = 120,
place = {United States},
year = 2014,
month = 6
}
  • Measurements and calculations of the air activation at a high-energy proton accelerator are described. The quantity of radionuclides released outdoors depends on operation scenarios including details of the air exchange inside the facility. To improve the prediction of the air activation levels, the MARS15 Monte Carlo code radionuclide production model was modified to be used for these studies. Measurements were done to benchmark the new model and verify its use in optimization studies for the new DUNE experiment at the Long Baseline Neutrino Facility (LBNF) at Fermilab. The measured production rates for the most important radionuclides – 11C, 13N, 15Omore » and 41Ar – are in a good agreement with those calculated with the improved MARS15 code.« less
  • The Neutrinos at the Main Injector (NuMI) beamline will deliver an intense muon neutrino beam by focusing a beam of mesons into a long evacuated decay volume. The beam must be steered with 1-mRad angular accuracy toward the Soudan Underground Laboratory in northern Minnesota. We have built 4 arrays of ionization chambers to monitor the neutrino beam direction and quality. The arrays are located at 4 stations downstream of the decay volume, and measure the remnant hadron beam and tertiary muons produced along with neutrinos in meson decays. We review how the monitors will be used to make beam qualitymore » measurements, and as well review chamber construction details, radiation damage testing, calibration, and test beam results.« less
  • The Neutrinos at the Main Injector (NuMI) project will extract 120-GeV protons from the FNAL Main Injector in 8.56-{mu}sec spills of 4 x 1013 protons every 1.9 sec. We have designed secondary emission monitor (SEM) detectors to measure beam profile and halo along the proton beam transport line. The SEMs are Ti foils 5 {mu}m in thickness segmented in either 1-mm or 0.5-mm pitch strips, resulting in beam loss {approx}5 x 10-6. We discuss aspects of the mechanical design, calculations of expected beam heating, and results of a beam test at the 8-GeV transport line to MiniBoone at FNAL.