New large aperture, hybrid photo-detector and photo multiplier tube for a gigantic water Cherenkov ring imaging detector

New large aperture, hybrid photo-detector and photo multiplier tube for a gigantic water Cherenkov ring imaging detector

We are developing a 20-in. aperture high quantum efficiency photo-multiplier tube (PMT) and a hybrid photo-detector (HPD) for Hyper-Kamiokande which is a next generation underground large water Cherenkov detector. We have measured prototypes of 20-in. PMT with a high quantum efficiency photocathode,...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2014-12, Vol.766, p.152-155
Hauptverfasser: Hirota, Seiko, Nishimura, Yasuhiro, Suda, Yusuke, Okajima, Yuji, Shiozawa, Masato, Nakayama, Shoei, Tanaka, Hidekazu, Hayato, Yoshinari, Ikeda, Motoyasu, Nakahata, Masayuki, Yokoyama, Masashi, Aihara, Hiroaki, Ichikawa, Atsuko, Minamino, Akihiro, Huang, Kunxian, Nakaya, Tsuyoshi, Kawai, Yoshihiko, Suzuki, Masatoshi, Ohmura, Takayuki
Format: Artikel
Sprache:eng
Schlagworte:
Accelerators
Apertures
Photocathodes
Quantum efficiency
Time measurements
Tubes
Underground
Water tanks
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:We are developing a 20-in. aperture high quantum efficiency photo-multiplier tube (PMT) and a hybrid photo-detector (HPD) for Hyper-Kamiokande which is a next generation underground large water Cherenkov detector. We have measured prototypes of 20-in. PMT with a high quantum efficiency photocathode, 30% at 400 nm, and 8-in. HPDs with a normal quantum efficiency photocathode, 22% at 400 nm, in a 200-ton water tank and checked their performance. The PMTs have a 2.7 ns (sigma) timing resolution and 43% (sigma) charge resolution for single photo-electron. Compared to PMTs, HPDs show a better performance with a 1.7 ns timing resolution and 32.
ISSN:0168-9002
DOI:10.1016/j.nima.2014.06.010