| Project/Area Number |
02044150
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Joint Research |
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| Research Institution | National Laboratory for High Energy Physics |
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Principal Investigator |
TAKASAKI Fumihiko National Laboratory for High Energy Physics, 物理部, 教授 (70011749)
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| Co-Investigator(Kenkyū-buntansha) |
THOMAS Tpsil CERN, 教授
RICCARDO des CERN, 教授
RICHARD Wigm CERN, 教授
TAMURA Norio University of Okayama, 理学部, 助教授 (00025462)
ENOMOTO Ryouji National Laboratory for High Energy physics, 物理, 助手 (80183755)
SAGAWA Hiroyuki National Laboratory for High Energy Physics, 物理, 助手 (80178590)
NOZAKI Tadao National Laboratory for High Energy Physics, 物理, 助教授 (30004469)
ABE Kzuo National Laboratory for High Energy Physics, 物理, 助教授 (80167931)
OZAKI Hitoshi National Laboratory for High Energy Physics, 物理, 助手 (10177214)
SUMIYOSHI Takayuki National Laboratory for High Energy Physics, 物理, 助手 (30154628)
TSUBOYAMA Toru National Laboratory for High Energy Physics, 物理, 助手 (80188622)
IKEDA Hirokazu National Laboratory for High Energy Physics, 物理, 助教授 (10132680)
CHIBA Junsei National Laboratory for High Energy Physics, 物理, 助教授 (50126124)
YPSILANTIS Thomas CERN and University of Paris
WIGMANS Richard CERN
DE SALOVO Riccardo CERN
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| Project Period (FY) |
1990
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| Project Status |
Completed (Fiscal Year 1990)
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| Budget Amount *help |
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1990: ¥3,000,000 (Direct Cost: ¥3,000,000)
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| Keywords | Calorimeter / Scintillation Fiber |
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| Research Abstract |
Scintillation Fiber Calorimeter (SFCAL) is a calorimeter which has attracted interests as one of the detectors to be developed for high energy physics experiments in the coming years, especially at the multi-TeV hadron colliders such as SSC or LHC. We have been developing plastic scintillation fibers and a readout system of fiber calorimeter. A calorimeter module which we have been studying is 2.3 m long made of 1mm PHI scintillation fibers and lead. The proportion of scintillation fiber and lead is 1 to 4 in volume. The cross sections of the front and rear ends of the module are 4 x 4 cm and 8 X 8 cm. Protruding fibers at the rear end are bundled keeping the order of fibers in the lead. Bundled fibers are mirror-polished and connected to a multi-anode photomultiplier (MAPMT), Hamamatsu H4484. This MAPMT has 64 anodes and it makes it possible for us to study the features of the shower development in the material. We make nine modules and they are assembled in a 3 x 3 matrix forming a l
… More
arger calorimeter module. It weighs about 900Kg in total.
Before studying this module for the high energy beam at CERN, we made a preliminary test of it on a few GeV electron beams produced at the TRISTAN Accumulation Ring for the following items.
1) Treatment of output pulses with FADC
2) Energy dependence of output signal
3) Spread of shower in the module at its energy dependence
4) Attenuation of the scintillation light in the module
5) Interference of output pulse among the anodes
6) Energy leakage between calorimeter modules
7) Dependence of output pulse on the mechanical stress to the module
8) Dependence of the output pulse on the incident beam angle
9) Long term stability of the output pulse
The results are currently analyzed carefully. We confirmed that the light attenuation in the module depends critically on the glue used to assemble fibers and lead. It was first found by the collaborator at CERN. This fact will make us reconsider the way of fabrication of the calorimeter module in the next attempt. Less
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