• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Development of Water Cherenkov Detector for Observation of 300GeV Gamma-Ray Bursts at Yangbajing in Tibet

Research Project

Project/Area Number 06452036
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 素粒子・核・宇宙線
Research InstitutionKonan University

Principal Investigator

SAKATA Michinori  Konan University, Physics Department, Professor, 理学部, 教授 (60068111)

Co-Investigator(Kenkyū-buntansha) KAJINO Fumiyoshi  Konan University, Physics Department, Associate Professor, 理学部, 助教授 (50204392)
YAMAMOTO Yoshiaki  Konan University, Physics Department, Professor, 理学部, 教授 (70068112)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥6,500,000)
Fiscal Year 1995: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1994: ¥6,000,000 (Direct Cost: ¥6,000,000)
KeywordsAstrophysics / Gamma-ray Bursts / Cosmic Rays / Air Shower / Water Cherenkov Detector / Air Shower Array / Tibet / ガンマ線天文学 / 高エネルギー宇宙物理
Research Abstract

We have studied methods to detect small air showers using water Cherenkov detector, aiming at a detection of Gamma-ray burst in the energy region from 100 GeV through 1 TeV.Test was performed at Mt.Norikura (2,870m a.s.l) using three water tanks of size 2.2mphi and 2.2m high installed at three corners of 10m triangle. A photomultiplier (PMT) of 8 inch diameter is set at the depth of 1.5m water in each water tank. Trigger was done when more than one photoelectron is detected by all of three PMTs and the arrival time difference between photoelectrons (PE) was less than 100ns. The angular resolution was found to be about 15゚ which was known by the comparison with data of a scintillation counter array set around the water tanks.
This experimental results are compared with a simulation. The PE distribution was found to be similar to the experiment, and angular resolution to be 10゚-12゚ which is also consistent with the experiment. By this simulation the energies of detected air showers are included in 70 GeV-800GeV with mode energy of about 200 GeV.
Based on above results, we made simulation of air shower observation at Yangbajing (4,300m a.s.l, in Tibet) using a model water tank array which is consists of 49 water tanks of 10m*10m with 1.5m depth installed at 7*7 lattice points in area 190m*190m. From this simulation it was known that the detectable energy region of gamma-ray air shower is 300 GeV-1 TeV for both cases of extrapolated energy spectrum of GRB910503 and GRB930131, and that angular resolutions are 1.2゚ for 300 GeV and 0.6゚ for 1 TeV,respectively. Expected significances for one sec observation of GRBs are found to be 40sigma for the case of GRB910503, and 200sigma for GRB930131.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (19 results)

All Other

All Publications (19 results)

  • [Publications] K.Hibino, F.Kajino, M.Sakata, M.Nishizawa, M.Ohnishi and Y.Yamamoto: "A Simulation for Gamma-Ray Source Search at 100GeV〜1TeV Region by Using the Water Cherenkov Detector at Very High Altitude." Proc.of the 23rd Intl.Cosmic Ray Conf.,. 1. 235-238 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] F.Kajono, M.Sakata et al.: "A Water Cherenkov Detector for V.H.E.Gamma-Ray Observation" Proc.of Tokyo Work shop on Techniques for the Study of Extremly High Enegy Cosmic Rays. 332-336 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] F.Kajino, T.Nakanishi,et al.: "Water Cherenkov Detector at High Altitude for High Energy Gamma-Ray Astronomy" Proc.of the 1st Intl.Symoisium on Cosmic Ray Physics in Tibet,Lhasa,China.316-319 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] F.Kajino, M.Komeno,et al.: "Feasibility Study of Water Cherenkov Detector at Mt.Norikura" Proc.of the 24th Intl.Cosmic Ray Conf.3. 520-523 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] F.Kajino, T.Nakanishi,et al.: "Water Cherenkov Detector for a Detection of Gamma-Ray Bursts at High Altitude" Proc.of the 24th Intl.Cosmic Ray Conf.3. 524-527 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Hibino, F.Kajono, M.Sakata, M.Nishizawa, M.Ohnishi and Y.Yamamoto: "A Simulation for Gamma-Ray Source Search at 100 GeV-1 TeV Region by Using the Water Cherenkov Detector at Very High Altitude" Proc.of the 23rd Intl.Cosmic Ray Conf.Vol.1. 235-238 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] F.Kajono, M.Sakata, A.Shiomi, Y.Yamamoto, K.Hibino, M.Nishizawa and M.Ohnishi: "A Water Cherenkov Detector for V.H.E.Gamma-Ray Observation" Proc.of Tokyo Work shop on Techniques for the Study of Extremly High Enegy Cosmic Rays. 332-336 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] F.Kajino, T.Nakanishi, M.Sakata, A.Shiomi, and Y.Yamamoto: "Water Cherenkov Detector at High Altitude for High Energy Gamma-Ray Astronomy" Proc.of the 1st Intl.Symposium on Cosmic Ray Physics in Tibet, Lhasa, China.316-319 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] F.Kajino, M.Komeno, T.Nakanishi, M.Sakata, T.Sasaki, Y.Yamamoto, A.Shiomi, K.Hibino, M.Nishizawa and M.Ohnishi: "Feasibility Study of Water Cherenkov Detector at Mt.Norikura" Proc.of the 24th Intl.Cosmic Ray Conf.Vol.3. 520-523 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] F.Kajino, T.Nakanishi, M.Sakata, Y.Yamamoto, A.Shiomi, K.Hibino, M.Nishizawa and M.Ohnishi: "Water Cherenkov Detector for a Detection of Gamma-Ray Bursts at High Altitude" Proc.of the 24th Intl.Cosmic Ray Conf.Vol.3. 524-527 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] F. Kajino, T. Nakanishi, M. Sakata, Y. Yamamoto et al.: "A Water Cerenkov Detector at High Altitude for High Energy Gamma-Ray Astronomy" Proceedings of the First International Symposium on Cosmic Ray Physics in Tibet. 316-319 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] F. Kajino, M. Komeno, T. Nakanishi et al.: "Feasibility Study of Water Cerenkov Detector at Mt. Norikura" Proc. 24th International Cosmic Ray Conference. 3. 520-523 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] F. Kajino, T. Nakanishi, M. Sakata, Y. Yamamoto et al.: "Water Cerenkov Detector for a Detectin of Gamma-Ray Bursts at High Altitude" Proc. 24th International Cosmic Ray Conference. 3. 524-527 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] M.Amenomori et al.: "SEARCH FOR 10 TeV GAMMA-RAY EMISSION FROM ACTIVE GALACTIC NUCLEI WITH THE TIBET AIR SHOWER ARRAY" Astrophysical Journal. 429. 634-637 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] M.Amenomori et al.: "Primary cosmic rays at the “knee"energy region observed with the Tibet air shower array" Proceedings of the first Inter national Symposium on Cosmic Ray physics in Tibet. (発表予定).

    • Related Report
      1994 Annual Research Report
  • [Publications] M.Amenomori et al.: "Shadowing of cosmic rays by the Sun near muximum or at the decreasing phase of Solar activity" 同上.

    • Related Report
      1994 Annual Research Report
  • [Publications] M.Amenomori et al.: "Search for 10 Tev γ-ray bursts on the second time scale with the Tibet air shower array" 同上.

    • Related Report
      1994 Annual Research Report
  • [Publications] M.Amenomori et al.: "Survey of Supernora Remnants to search for Emission of 10TeV Gamma Rays" 同上.

    • Related Report
      1994 Annual Research Report
  • [Publications] F.Kajino et al.: "A water Cerenkov Detectorat High Altitude for High Energy Gamma-Ray Astronomy" 同上.

    • Related Report
      1994 Annual Research Report

URL: 

Published: 1994-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi