CsI calorimeter and low power PMT base for KOTO experiment

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

KOTO is the first experiment in the world specialized in observing the decay KL → π0VV̄. The decay is sensitive to new physics scenarios beyond the Standard Model. The most important detector of KOTO is the CsI calorimeter, which measures positions and energies of gammas from KL, in order to reconstruct the vertexes of them. There are mainly three requirements for the calorimeter. First, dynamic range for each channel of CsI is more than 3 order of magnitude. Second, single counting rate is about 120 kHz comes from beam intensity. And linearity is required less than ±5% in order to discriminate the signals and backgrounds. Finally, to suppress the backgrounds, we will put the calorimeter at the vacuum level of 0.1Pa. So we must reduce its power consumption. That is why we plan to use the Cockcroft-Walton circuit as a high voltage supply for PMTs. It can reduce power down to about 150mW.

Original languageEnglish
Title of host publicationProceedings of Science
Publication statusPublished - 2009
Externally publishedYes
Event2009 Kaon International Conference, KAON 2009 - Tsukuba, Japan
Duration: Jun 9 2009Jun 12 2009

Other

Other2009 Kaon International Conference, KAON 2009
CountryJapan
CityTsukuba
Period6/9/096/12/09

Fingerprint

calorimeters
decay
dynamic range
linearity
high voltages
counting
apexes
requirements
vacuum
physics
detectors
energy

ASJC Scopus subject areas

  • General

Cite this

CsI calorimeter and low power PMT base for KOTO experiment. / Masuda, Takahiko.

Proceedings of Science. 2009.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Masuda, T 2009, CsI calorimeter and low power PMT base for KOTO experiment. in Proceedings of Science. 2009 Kaon International Conference, KAON 2009, Tsukuba, Japan, 6/9/09.
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