Development of position sensitive scintillation counter for balloon borne hard X-ray telescope

Keisuke Tamura, Hideyo Kunieda, Yasushi Ogasaka, Akihiro Furuzawa, Ryo Shibata, Tomokazu Nakamura, Katsuhiko Ohnishi, Yasufumi Kanou, Emi Miyata, Hiroshi Tsunemi

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


We have been developing position sensitive scintillation counter as focal plane detector of hard X-ray telescope onboard a balloon borne experiment. This detector consists NaI(TI) scintillator and position sensitive photomultiplier tube. Focal plane detector has to have high efficiency in hard X-ray region, enough position resolution and detection area. 3mm thickness of Nal(TI) scintillator can achieve almost 100% efficiency below 80 keV. We measured position resolved energy and position resolution in synchrotron radiation facility SPring-8 BL20B2. Position resolution of 2.4mm at 60keV is about half of plate scale of half power diameter of X-ray telescope. The detector has 6 cm diameter window and it corresponds to 25 arcmin. field of view, and it is enough lager than the that of telescope, which is 12 arcmin in FWHM. Balloon borne experiment for observation of the background was performed on May 24, 2005 from Sanriku balloon center. We could obtain background data for 3 hours at altitude of 40 km.

Original languageEnglish
Title of host publicationSpace Telescopes and Instrumentation II
Subtitle of host publicationUltraviolet to Gamma Ray
Volume6266 II
Publication statusPublished - 02-10-2006
Externally publishedYes
EventSpace Telescopes and Instrumentation II: Ultraviolet to Gamma Ray - Orlando, FL, United States
Duration: 24-05-200631-05-2006


OtherSpace Telescopes and Instrumentation II: Ultraviolet to Gamma Ray
Country/TerritoryUnited States
CityOrlando, FL

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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