Abstract
The JET gamma-ray camera diagnostics have already provided valuable information on the gamma-ray imaging of fast ion in JET plasmas /1, 2/. The JET Gamma-Ray Cameras (GRC) upgrade project deals with the design of appropriate neutron/gamma-ray filters ("neutron attenuators"). The main design parameter was the neutron attenuation factor /3/. The two design solutions, that have been finally chosen and developed at the level of scheme design, consist of: a) one quasi-crescent shaped neutron attenuator (for the horizontal camera) and b) two quasi-trapezoid shaped neutron attenuators (for the vertical one). Pure light water was chosen as the attenuating material for the JET gamma-ray cameras. Finite Element Analysis (FEA) methods used to evaluate the behaviour of the filter casings under the loadings (internal hydrostatic pressure torques) have proven the stability of the structure.
Original language | English |
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Pages (from-to) | 2088-2091 |
Number of pages | 4 |
Journal | Journal of Optoelectronics and Advanced Materials |
Volume | 10 |
Issue number | 8 |
Publication status | Published - Aug 2008 |
Keywords
- Diagnostics
- Gamma-rays
- Tokamak