Balloon-borne electron telescope with scintillating fibers

Shoji Torii; Jun Nishimura; Katsuaki Kasahara; Nobuhito Tateyama; Tadahisa Tamura; Kenji Yoshida; Takamasa Yamagami; Shigeo Ohta; Mitiyoshi Namiki; Tadashi Kobayashi; Hiroyuki Murakami; Toshinori Yuda

Balloon-borne electron telescope with scintillating fibers

Shoji Torii^*, Jun Nishimura, Katsuaki Kasahara, Nobuhito Tateyama, Tadahisa Tamura, Kenji Yoshida, Takamasa Yamagami, Shigeo Ohta, Mitiyoshi Namiki, Tadashi Kobayashi, Hiroyuki Murakami, Toshinori Yuda

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

6 Citations (Scopus)

Abstract

We describe a new balloon-borne cosmic-electron telescope that incorporates a trigger system and an imaging calorimeter. It is designed to observe high-energy electrons with an energy greater than 10 GeV. The rejection of the background protons is performed by using the trigger system in real time and the off-line analysis of three-dimensional shower profiles observed in the imaging calorimeter. The calorimeter consists of scintillating-fiber belts, emulsion plates and lead plates (approximately 8r.1.thick in total). In order to observe the direction of showers, two belts in each depth are set at right angles with each other. Image intensifier is used to amplify the number of photons from scintillating fibers, and CCD camera is attached at the output window of the image intensifier. The telescope was launched at Sanriku Balloon Center, and it was flown for 12 hours at the level altitude. By preliminary analysis, we observed about 700 electrons over 10 GeV under 4g cm ^-2 of average residual atmosphere. The flux of electrons is consistent with previous observations.

Original language	English
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Editors	Brian D. Ramsey, Thomas A. Parnell
Pages	145-154
Number of pages	10
Volume	2806
Publication status	Published - 1996
Externally published	Yes
Event	Gamma-Ray and Cosmic-Ray Detectors, Techniques, and Missions - Denver, CO, USA Duration: 1996 Aug 5 → 1996 Aug 7

Other

Other	Gamma-Ray and Cosmic-Ray Detectors, Techniques, and Missions
City	Denver, CO, USA
Period	96/8/5 → 96/8/7

ASJC Scopus subject areas

Engineering(all)

Cite this

Torii, S, Nishimura, J, Kasahara, K, Tateyama, N, Tamura, T, Yoshida, K, Yamagami, T, Ohta, S, Namiki, M, Kobayashi, T, Murakami, H & Yuda, T 1996, Balloon-borne electron telescope with scintillating fibers. in BD Ramsey & TA Parnell (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 2806, pp. 145-154, Gamma-Ray and Cosmic-Ray Detectors, Techniques, and Missions, Denver, CO, USA, 96/8/5.

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author = "Shoji Torii and Jun Nishimura and Katsuaki Kasahara and Nobuhito Tateyama and Tadahisa Tamura and Kenji Yoshida and Takamasa Yamagami and Shigeo Ohta and Mitiyoshi Namiki and Tadashi Kobayashi and Hiroyuki Murakami and Toshinori Yuda",

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T1 - Balloon-borne electron telescope with scintillating fibers

AU - Torii, Shoji

AU - Nishimura, Jun

AU - Kasahara, Katsuaki

AU - Tateyama, Nobuhito

AU - Tamura, Tadahisa

AU - Yoshida, Kenji

AU - Yamagami, Takamasa

AU - Ohta, Shigeo

AU - Namiki, Mitiyoshi

AU - Kobayashi, Tadashi

AU - Murakami, Hiroyuki

AU - Yuda, Toshinori

PY - 1996

Y1 - 1996

N2 - We describe a new balloon-borne cosmic-electron telescope that incorporates a trigger system and an imaging calorimeter. It is designed to observe high-energy electrons with an energy greater than 10 GeV. The rejection of the background protons is performed by using the trigger system in real time and the off-line analysis of three-dimensional shower profiles observed in the imaging calorimeter. The calorimeter consists of scintillating-fiber belts, emulsion plates and lead plates (approximately 8r.1.thick in total). In order to observe the direction of showers, two belts in each depth are set at right angles with each other. Image intensifier is used to amplify the number of photons from scintillating fibers, and CCD camera is attached at the output window of the image intensifier. The telescope was launched at Sanriku Balloon Center, and it was flown for 12 hours at the level altitude. By preliminary analysis, we observed about 700 electrons over 10 GeV under 4g cm -2 of average residual atmosphere. The flux of electrons is consistent with previous observations.

AB - We describe a new balloon-borne cosmic-electron telescope that incorporates a trigger system and an imaging calorimeter. It is designed to observe high-energy electrons with an energy greater than 10 GeV. The rejection of the background protons is performed by using the trigger system in real time and the off-line analysis of three-dimensional shower profiles observed in the imaging calorimeter. The calorimeter consists of scintillating-fiber belts, emulsion plates and lead plates (approximately 8r.1.thick in total). In order to observe the direction of showers, two belts in each depth are set at right angles with each other. Image intensifier is used to amplify the number of photons from scintillating fibers, and CCD camera is attached at the output window of the image intensifier. The telescope was launched at Sanriku Balloon Center, and it was flown for 12 hours at the level altitude. By preliminary analysis, we observed about 700 electrons over 10 GeV under 4g cm -2 of average residual atmosphere. The flux of electrons is consistent with previous observations.

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M3 - Conference contribution

AN - SCOPUS:0030360558

SN - 0819421944

SN - 9780819421944

VL - 2806

SP - 145

EP - 154

BT - Proceedings of SPIE - The International Society for Optical Engineering

A2 - Ramsey, Brian D.

A2 - Parnell, Thomas A.

T2 - Gamma-Ray and Cosmic-Ray Detectors, Techniques, and Missions

Y2 - 5 August 1996 through 7 August 1996

ER -

Balloon-borne electron telescope with scintillating fibers

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