Advertisement

Behavior of 144ch HAPDs for the Belle II Aerogel RICH in the Magnetic Field

  • K. Ogawa
  • I. Adachi
  • R. Dolenec
  • K. Hataya
  • H. Kakuno
  • H. Kawai
  • H. Kindo
  • T. Konno
  • S. Korpar
  • P. Križan
  • T. Kumita
  • M. Machida
  • M. Mrvar
  • S. Nishida
  • K. Noguchi
  • S. Ogawa
  • R. Pestotnik
  • L. Šantelj
  • T. Sumiyoshi
  • M. Tabata
  • M. Yonenaga
  • M. Yoshizawa
  • Y. Yusa
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 213)

Abstract

We report behavior of Hybrid Avalanche Photon Detectors (HAPDs), which were newly developed for Aerogel Ring Imaging Cherenkov detector (ARICH) counter that will be installed in the endcap region of the Belle II detector, in the magnetic field. Since HAPDs are used in a 1.5 T magnetic field in the Belle II detector, we have tested 520 HAPDs from the mass production in the magnetic field. We observed anomalously large pulses in the magnetic field in many HAPDs. The main adverse effect of these large pulses is the induction of a short dead time of the readout electronics after each pulse. We performed several studies to understand the mechanism generating large pulses.

Keywords

Particle identification Hybrid Avalanche Photo Detector Magnetic field Belle II 

References

  1. 1.
    Abe, T., et al.: Belle II Technical Design Report (2010). arxiv:1011.0352 [physics.ins-det] KEK Report 2010-1
  2. 2.
    Pestotnik, R., et al.: The aerogel ring imaging Cherenkov system at the Belle II spectrometer. Nucl. Instrum. Methods Phys. Res. A (2018, in press).  https://doi.org/10.1016/j.nima.2017.04.043
  3. 3.
    Iijima, T., et al.: A novel type of proximity focusing RICH counter with multiple refractive index aerogel radiator. Nucl. Instrum. Methods Phys. Res. A 548, 383–390 (2005)ADSCrossRefGoogle Scholar
  4. 4.
    Yusa, Y., et al.: Test of the HAPD light sensor for the Belle II Aerogel RICH. Nucl. Instrum. Methods Phys. Res. A (2018, in press).  https://doi.org/10.1016/j.nima.2017.02.046
  5. 5.
    Korpar, S., et al.: A 144-channel HAPD for the Aerogel RICH at Belle II. Nucl. Instrum. Methods Phys. Res. A 766, 145–147 (2014)ADSCrossRefGoogle Scholar
  6. 6.
    Chatrchyan, S., et al.: Identification and Filtering of Uncharacteristic Noise in the CMS Hadron Calorimeter (2010). arxiv:0911.4881 [physics.ins-det] CMS PAPER CFT-09-019

Copyright information

© Springer Nature Singapore Pte Ltd.  2018

Authors and Affiliations

  • K. Ogawa
    • 1
  • I. Adachi
    • 2
    • 3
  • R. Dolenec
    • 4
  • K. Hataya
    • 5
  • H. Kakuno
    • 5
  • H. Kawai
    • 6
  • H. Kindo
    • 3
  • T. Konno
    • 2
  • S. Korpar
    • 7
    • 8
  • P. Križan
    • 4
    • 8
  • T. Kumita
    • 5
  • M. Machida
    • 9
  • M. Mrvar
    • 8
  • S. Nishida
    • 2
    • 3
  • K. Noguchi
    • 5
  • S. Ogawa
    • 10
  • R. Pestotnik
    • 8
  • L. Šantelj
    • 2
  • T. Sumiyoshi
    • 5
  • M. Tabata
    • 6
  • M. Yonenaga
    • 5
  • M. Yoshizawa
    • 1
  • Y. Yusa
    • 1
  1. 1.Niigata UniversityNiigataJapan
  2. 2.High Energy Accelerator Research Organization (KEK)TsukubaJapan
  3. 3.SOKENDAI (The Graduate University of Advanced Science)TsukubaJapan
  4. 4.University of LjubljanaLjubljanaSlovenia
  5. 5.Tokyo Metropolitan UniversityHachiojiJapan
  6. 6.Chiba UniversityChibaJapan
  7. 7.University of MariborMariborSlovenia
  8. 8.Jožef Stefan InstituteLjubljanaSlovenia
  9. 9.Tokyo University of ScienceNodaJapan
  10. 10.Toho UniversityFunabashiJapan

Personalised recommendations