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Diagnostic Systems and Protection Control for Iren Linac Test Facility
| Content Provider | Semantic Scholar |
|---|---|
| Author | Zamriy, V. N. |
| Copyright Year | 2004 |
| Abstract | The combined scheme of timed diagnostics and the protection control are created for the linac test facility of projected neutron source IREN. The applicability of the diagnostics systems of cycle parameters and status deviations for duty control, is shown. Multiway control modules of a protection system have been developed for logging and status diagnostics, the alarms and duty control. The applied controller for duty protection with fast locking of the linac cycle is presented. INTRODUCTION The IREN full-scale test facility [1] is constructed according to the project on a pulsed neutron source based on the linear electron accelerator LUE-200 and a neutron multiplication target. The examined equipment of the linac includes: a powerful klystron SLAC 5045 and RF (2856 MHz) power multiplier, a pulse modulator and power supply, a master synchronizer and an electron gun driver, as well as a cooling thermostat of the linac section, vacuum and other environment subsystems. Figure 1: The first-stage instrumentation for IREN TF. At the first stage of the instrumentation for the IREN test facility (fig. 1), the timed data taking system [2] for parameters monitoring and diagnostics of the duty cycle (from one beam impulse to the other) with a repetition rate of ~0–150 sec, was constructed. A prototype of our monitoring system with on-line diagnostics of beams parameters was also tested on the pulsed neutron source IBR-30 with linac LUE-40. However, for a new source the neutron intensity, electron energy and beam power should be higher, but the pulse duration and repetition cycle values – lower. Some solvable problems of the timed data acquisition to control the pulsed test facilities were formulated in the reports [3, 4]. Adequate hardware for diagnostics of operation modes and state transitions, which cannot be timed with the IREN duty cycle, has been alternatively developed as well. Multichannel circuits of diagnostics for a fast duty control and an emergency protection of experimental test facilities were required, along with development of feedback systems for interactive control. The controllers of multiway protection systems are now developed for real-time status change diagnostics and an emergency control with a possible fast lock of the duty cycles. THE COMBINED SCHEME OF TIMED DIAGNOSTICS The composed scheme (fig. 2) contains two parts including diagnostics systems of cycle parameters and of state transitions for duty control. The first applied system fulfils timed data taking of each cycle to diagnose pulse parameters, the two-stage and analog signals. The modules of converters of the pulse amplitude and delay time, the conditioners or normalizers of the analog signals, 32-channel multiplexers and the precise logger with buffer memory are included in the minimized structure of the CAMAC system. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://accelconf.web.cern.ch/accelconf/r04/papers/WEHP31.PDF |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
