摘要
A new hard X-ray pulse-height analysis （PHA） system has been established on HT-7 tokamak for long pulse steady-state operation. This PHA system consists of hard X-ray diagnostics and multi-channel analysers （MCA）. The hard X-ray diagnostics consists of a vertical X-ray detector array （CdTe） and a horizontal X-ray detector array （NaI）. The hard X-ray diagnostics can provide the profile of power deposition and the distribution function of fast electron during radio frequency （RF） current drive. The MCA system is the electronic part of the PHA system, which has been modularized and linked to PC through LAN. Each module of MCA can connect with 8 X-ray detectors. The embedded Ethernet adapter in the MCA module makes the data communication between PC and MCA very convenient. A computer can control several modules of MCA through certain software and a hub. The RAM in MCA can store 1024 or more spectra for each detector and therefore the PHA system can be applied in the long pulse discharge of several minutes.
A new hard X-ray pulse-height analysis （PHA） system has been established on HT-7 tokamak for long pulse steady-state operation. This PHA system consists of hard X-ray diagnostics and multi-channel analysers （MCA）. The hard X-ray diagnostics consists of a vertical X-ray detector array （CdTe） and a horizontal X-ray detector array （NaI）. The hard X-ray diagnostics can provide the profile of power deposition and the distribution function of fast electron during radio frequency （RF） current drive. The MCA system is the electronic part of the PHA system, which has been modularized and linked to PC through LAN. Each module of MCA can connect with 8 X-ray detectors. The embedded Ethernet adapter in the MCA module makes the data communication between PC and MCA very convenient. A computer can control several modules of MCA through certain software and a hub. The RAM in MCA can store 1024 or more spectra for each detector and therefore the PHA system can be applied in the long pulse discharge of several minutes.
基金
supported by National Nature Science Foundation of China (No. 10235010)
