Development of a high dynamic range Read-out system using multiple photodiodes for the total absorption calorimeter of the CALorimetric electron telescope

Y. Katayose, M. Shibata, S. Torii, Y. Shimizu, T. Tamura, K. Hibino, S. Okuno, K. Yoshida, H. Kitamura, Y. Uchihori, H. Murakami, S. Kubo

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Abstract

Read-out systems using Si-PIN photodiodes and front-end circuits(FEC) were studied to measure the energy deposit with a dynamic range from 1MIP(Minimum Ionization Particle) to 106 MIPs in a BGO bar of the total absorption calorimeter (TASC) of the CALET (CALori- metric Electron Telescope) instrument. Three types of FEC were tested for the photodiode read out. Two were A225(AMP-TEK), which consists of a hybrid charge sensitive preamplifier and a shaping amplifier, and MPX-08 (NOVA), which is a charge-integrating chip. It was confirmed that the A225 has a resolution of about 0.31 fC and a maximum range of about 2 pC. It was found that the use of the A225 makes a wide range measurement with six orders of magnitude possible using three photodiodes. A new hybrid integrated circuit is being developed to measure a BGO signal with a dynamic range of seven orders using two photodiodes. This FEC consists of two preamplifiers, one for a smaller photodiode and one for a larger one. A high-gain preamplifier was developed and its performance was evaluated. The resolution is about 0.5 fC and the maximum range is more than 25 pC. This makes a dynamic range with four orders of magnitude possible using one photodiode. The outline of a read-out systems using each type of FEC and the state of the development of each system is described below.

Original languageEnglish
Pages (from-to)177-180
Number of pages4
JournalJournal of the Physical Society of Japan
Volume78
Issue numberSUPPL. A
DOIs
Publication statusPublished - 2009 Jan 1

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Keywords

  • BGO
  • CALET
  • Electron telescope
  • FEC
  • High dynamic range
  • ISS
  • Si-pin photodiode
  • TASC

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Katayose, Y., Shibata, M., Torii, S., Shimizu, Y., Tamura, T., Hibino, K., Okuno, S., Yoshida, K., Kitamura, H., Uchihori, Y., Murakami, H., & Kubo, S. (2009). Development of a high dynamic range Read-out system using multiple photodiodes for the total absorption calorimeter of the CALorimetric electron telescope. Journal of the Physical Society of Japan, 78(SUPPL. A), 177-180. https://doi.org/10.1143/JPSJS.78SA.177