Abstract
The performance of the CsI electromagnetic calorimeter to be used for the J-PARC E14 KOTO experiment for a rare decay KL → π0ν ν ¯ was studied by using a positron beam from an accelerator. The energy, timing, and position resolutions for energies up to 800 MeV were measured. We also developed a new method to reconstruct the incident angle of photons based on the shower shape recorded with the calorimeter, and evaluated the method to suppress possible backgrounds for KL → π0ν ν ¯ decay signals.
| Original language | English |
|---|---|
| Pages (from-to) | 135-141 |
| Number of pages | 7 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
| Volume | 786 |
| DOIs | |
| Publication status | Published - Jun 21 2015 |
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Keywords
- Electromagnetic calorimeter
- K → πν ν ¯
- KOTO experiment
- Pure CsI
ASJC Scopus subject areas
- Instrumentation
- Nuclear and High Energy Physics
Cite this
Performance study of a prototype pure CsI calorimeter for the KOTO experiment. / Iwai, E.; Lee, J. W.; Masuda, Takahiko; McFarland, D.; Nakaya, Y.; Ri, Y. D.; Sato, K.; Shiomi, K.; Sugiyama, Y.; Tajima, Y.; Tecchio, M.; Togawa, M.; Tung, Y. C.; Yamanaka, T.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 786, 21.06.2015, p. 135-141.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Performance study of a prototype pure CsI calorimeter for the KOTO experiment
AU - Iwai, E.
AU - Lee, J. W.
AU - Masuda, Takahiko
AU - McFarland, D.
AU - Nakaya, Y.
AU - Ri, Y. D.
AU - Sato, K.
AU - Shiomi, K.
AU - Sugiyama, Y.
AU - Tajima, Y.
AU - Tecchio, M.
AU - Togawa, M.
AU - Tung, Y. C.
AU - Yamanaka, T.
PY - 2015/6/21
Y1 - 2015/6/21
N2 - The performance of the CsI electromagnetic calorimeter to be used for the J-PARC E14 KOTO experiment for a rare decay KL → π0ν ν ¯ was studied by using a positron beam from an accelerator. The energy, timing, and position resolutions for energies up to 800 MeV were measured. We also developed a new method to reconstruct the incident angle of photons based on the shower shape recorded with the calorimeter, and evaluated the method to suppress possible backgrounds for KL → π0ν ν ¯ decay signals.
AB - The performance of the CsI electromagnetic calorimeter to be used for the J-PARC E14 KOTO experiment for a rare decay KL → π0ν ν ¯ was studied by using a positron beam from an accelerator. The energy, timing, and position resolutions for energies up to 800 MeV were measured. We also developed a new method to reconstruct the incident angle of photons based on the shower shape recorded with the calorimeter, and evaluated the method to suppress possible backgrounds for KL → π0ν ν ¯ decay signals.
KW - Electromagnetic calorimeter
KW - K → πν ν ¯
KW - KOTO experiment
KW - Pure CsI
UR - http://www.scopus.com/inward/record.url?scp=84926431550&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84926431550&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2015.02.046
DO - 10.1016/j.nima.2015.02.046
M3 - Article
VL - 786
SP - 135
EP - 141
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
ER -