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 |
|---|---|
| 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