| Project/Area Number |
05452390
|
|---|
| Research Category |
Grant-in-Aid for General Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Nuclear fusion studies
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
IGUCHI Tetsuo The University of Tokyo, School of Engineering, Associate Professor, 工学部, 助教授 (60134483)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
TAKAHASHI Hiroyuki The University of Tokyo, Graduate School of Engineering, Lecturer, 大学院・工学系研究科, 講師 (70216753)
|
|---|
| Project Period (FY) |
1993 – 1994
|
| Project Status |
Completed (Fiscal Year 1994)
|
| Budget Amount *help |
¥6,500,000 (Direct Cost: ¥6,500,000)
Fiscal Year 1994: ¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1993: ¥4,700,000 (Direct Cost: ¥4,700,000)
|
|---|
| Keywords | Fusion reactor / Material irradiation test / Intense neutron source / Neutron detector / Neutron spectrum / High energy resolution / Recoil nuceus / Conter telescope / 中性子スペクトル測定 |
|---|
| Research Abstract |
The present study is aiming at the development of a new type neutron detector suitable for routine monitoring of accelerator neutron sources which are expected for fusion reactor material irradiation test experiments. The detection principle is based on recoil nucleus counter telescope technique in oblique scattering geometry with unique ideas that a large area recoil nucleus emitter (radiator) is placed In parallel to the incident neutron beam and a multi-micro collimation plate for recoil nuclei is inserted between the radiator and recoil nucleus detectors away from the neutron beam. The excellence of this system can reaIize the compatibility of high enegy resolution and high detection efficiency together with good radiation resistance by adjusting the geometrical parameters of the detector elements such as the radiator thickness and area, the shape of recoil nucleus microcollimators, etc.
The main research results are summarized as follows ;
1.The program to calculate the precise detector response was developed for neutrons in the energy region between 1 and 50 MeV expected for fusion reactor material irradiation test experiments.
2.A prototype detector correspnding to 1/24 model was manufactured and the performance test was made by using an accelerator 14MeV neutron source, of which results verified the validity of the present detector concept and design calculation
3.The procedure to determine the detector specification was established through an example design optimized to the requirements for 14MeV neutron source monitoring
4.The posibility of manufacturing a recoil nucleus microcollimation plate, which is essential to reaIize the present detector concept, was demonstrated by some micromacnining technique.
5.The predicted performance and problems were made clear through design consideration for neutron spectrometry in the energy region higher than 14MeV.
|
