Status of the cangaroo iii project
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Poster GA:10. International Symposium on High Energy Gamma-Ray Astronomy, June 26-30, Heidelberg. Status of the CANGAROO-III Project. Masaki Mori ICRR, University of Tokyo. CANGAROO collaboration. C ollaboration of A ustralia and N ippon for a Ga mma R ay O bservatory in the O utback.

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Status of the cangaroo iii project l.jpg

Poster GA:10

International Symposium on High Energy Gamma-Ray Astronomy, June 26-30, Heidelberg

Status of the CANGAROO-III Project

Masaki Mori

ICRR, University of Tokyo

Cangaroo collaboration l.jpg
CANGAROO collaboration

  • Collaboration of Australia and Nippon for a Gamma Ray Observatory in the Outback

  • Institute for Cosmic Ray Research, U. Tokyo

  • University of Adelaide

  • Australian National University

  • Ibaraki University

  • Ibaraki Prefectural University of Health Science

  • Institute of Space and Astronautical Science

  • Institute of Physical and Chemical Research (RIKEN)

  • Kanagawa University

  • Konan University

  • Kyoto University

  • National Astronomical Observatory of Japan

  • Osaka City University

  • STE Laboratory, Nagoya University

  • Tokai University

  • Tokyo Institute of Technology

  • Yamagata University

  • Yamanashi Gakuin University

Cangaroo ii 7m telescope l.jpg
CANGAROO-II 7m telescope

  • In operation since May 1999

  • Observation 1999/2000PSR1706-44 29hRXJ1713.7-3946 23hPKS2005-489 23hPKS2155-304 58hPKS0548-322 19hCrab 63hVela 10h

  • Data analysis underway - results will be coming soon!

Cangaroo iii l.jpg

  • Array of four 10m telescopes in Woomera, South Australia to be operated by 2004

The first 10m telescope 1 l.jpg
The first 10m telescope -1

(As of May 2000)

The first 10m telescope 2 l.jpg
The first 10m telescope -2

  • Upgraded from 7m in March 2000

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Point image size

(A. Kawachi, M. Ohishi and J. Kushida)

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552ch imaging camera

  • 3FOV

  • R4124UV(Hamamatsu)

  • 0.115 pixel

  • Lightguide

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32 channel VME ADC

  • VME-9U, A24/A32, D16

  • Features:・12 bit ・4ch/pC ・Min. 50ns gate・150ns internal delay

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Observations in 2000

  • March: Vela pulsar / PSR1259-63

  • April: SN1006

  • May: SN1006

  • June: PSR1706-44

  • …analysis using, and development of, unified software package in progress

Schedule l.jpg

  • FY2000: production of the 2nd telescope

  • FY2001: installation of the 2nd telescope /start of stereo observation /production of the 3rd telescope

  • FY2002: installation of the 3rd telescope /production of the 4th telescope

  • FY2003: installation of the 4th telescope /start of observation by the full array

Work in progress l.jpg
Work in progress

  • Refinement of mirror optical quality

  • Wider FOV camera with individually HV-controlled PMTs

  • Front-end electronics in VME-9U

  • Faster data readout

  • Pattern trigger circuit using PLD

  • Flexible, centralized telescope control

  • Total monitor system (calibration light source, environment etc.)

Camera design l.jpg
Camera design

  • 4.2 FOV

  • 427 pixels

  • 3/4” PMT(Hamamatsu R3478UV, TTS 0.36ns)

(C. Ito)

Electronics l.jpg

  • VME-based・Discriminator /scaler・TDC・ADC・Trigger・CPU(Solaris or VxWorks)

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Telescope separation study

  • 80~120m is not a bad choice

(R. Enomoto)

☆ Figure of merit = E-2.5(effective area)/(angular resolution)

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Possible layout of the array

31°06’ S

136°47’ E

160m a.s.l.

(J. Patterson)

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Sensitivity in stereo mode

(Simulation assuming [optimistic] g & m rejection power of 100, and timing rejection power of 2)

And in 2004 l.jpg
And in 2004

(S. Hara)