Abstract
The photon detection inefficiency of electromagnetic calorimeters due to photonuclear reactions has been studied at photon energies below 1 GeV using a tagged-photon beam at the KEK-Tanashi 1.3-GeV electron synchrotron. Photonuclear reactions are identified by detecting low-energy neutrons with liquid scintillation counters surrounding the sample calorimeter. For a Cesium Iodide (CsI) calorimeter with a detection threshold of 10 MeV, the inefficiency due to photonuclear reactions is 10-4 at Eγ=100MeV, and decreases to 2×10-7 at Eγ=1GeV. For a lead-scintillator sampling calorimeter, the inefficiency is larger than the above values by a factor of 2-3, reflecting the sampling effect after photonuclear reactions. By decreasing the detection threshold down to 1 MeV, the inefficiencies are reduced by a factor of 10 for both types of calorimeters.
| Original language | English |
|---|---|
| Pages (from-to) | 263-275 |
| Number of pages | 13 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
| Volume | 552 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Nov 1 2005 |
| Externally published | Yes |
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Keywords
- Electromagnetic calorimeter
- Photon detection inefficiency K →πνν̄ decay
ASJC Scopus subject areas
- Instrumentation
- Nuclear and High Energy Physics
Cite this
Measurement of the photon detection inefficiency of electromagnetic calorimeters at energies below 1 GeV. / Ajimura, S.; Arisaka, K.; Barrio, M.; Fujiwara, T.; Hidaka, S.; Hotta, T.; Hsiung, B.; Ikegami, Y.; Inagaki, T.; Kabe, S.; Kessler, R.; Kobayashi, S.; Kurashige, H.; Kurebayashi, K.; Matsumura, T.; Miyahara, T.; Mori, K.; Nakagawa, T.; Nakamura, T.; Nakano, T.; Nomura, T.; Okuno, H.; Sasao, Noboru; Sato, T.; Shinkawa, T.; Suzuki, I.; Tripathi, A.; Tsukamoto, T.; Wah, Y.; Watanabe, H.; Winstein, B.; Yamanaka, T.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 552, No. 3, 01.11.2005, p. 263-275.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Measurement of the photon detection inefficiency of electromagnetic calorimeters at energies below 1 GeV
AU - Ajimura, S.
AU - Arisaka, K.
AU - Barrio, M.
AU - Fujiwara, T.
AU - Hidaka, S.
AU - Hotta, T.
AU - Hsiung, B.
AU - Ikegami, Y.
AU - Inagaki, T.
AU - Kabe, S.
AU - Kessler, R.
AU - Kobayashi, S.
AU - Kurashige, H.
AU - Kurebayashi, K.
AU - Matsumura, T.
AU - Miyahara, T.
AU - Mori, K.
AU - Nakagawa, T.
AU - Nakamura, T.
AU - Nakano, T.
AU - Nomura, T.
AU - Okuno, H.
AU - Sasao, Noboru
AU - Sato, T.
AU - Shinkawa, T.
AU - Suzuki, I.
AU - Tripathi, A.
AU - Tsukamoto, T.
AU - Wah, Y.
AU - Watanabe, H.
AU - Winstein, B.
AU - Yamanaka, T.
PY - 2005/11/1
Y1 - 2005/11/1
N2 - The photon detection inefficiency of electromagnetic calorimeters due to photonuclear reactions has been studied at photon energies below 1 GeV using a tagged-photon beam at the KEK-Tanashi 1.3-GeV electron synchrotron. Photonuclear reactions are identified by detecting low-energy neutrons with liquid scintillation counters surrounding the sample calorimeter. For a Cesium Iodide (CsI) calorimeter with a detection threshold of 10 MeV, the inefficiency due to photonuclear reactions is 10-4 at Eγ=100MeV, and decreases to 2×10-7 at Eγ=1GeV. For a lead-scintillator sampling calorimeter, the inefficiency is larger than the above values by a factor of 2-3, reflecting the sampling effect after photonuclear reactions. By decreasing the detection threshold down to 1 MeV, the inefficiencies are reduced by a factor of 10 for both types of calorimeters.
AB - The photon detection inefficiency of electromagnetic calorimeters due to photonuclear reactions has been studied at photon energies below 1 GeV using a tagged-photon beam at the KEK-Tanashi 1.3-GeV electron synchrotron. Photonuclear reactions are identified by detecting low-energy neutrons with liquid scintillation counters surrounding the sample calorimeter. For a Cesium Iodide (CsI) calorimeter with a detection threshold of 10 MeV, the inefficiency due to photonuclear reactions is 10-4 at Eγ=100MeV, and decreases to 2×10-7 at Eγ=1GeV. For a lead-scintillator sampling calorimeter, the inefficiency is larger than the above values by a factor of 2-3, reflecting the sampling effect after photonuclear reactions. By decreasing the detection threshold down to 1 MeV, the inefficiencies are reduced by a factor of 10 for both types of calorimeters.
KW - Electromagnetic calorimeter
KW - Photon detection inefficiency K →πνν̄ decay
UR - http://www.scopus.com/inward/record.url?scp=26944460378&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=26944460378&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2005.06.070
DO - 10.1016/j.nima.2005.06.070
M3 - Article
AN - SCOPUS:26944460378
VL - 552
SP - 263
EP - 275
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
IS - 3
ER -