New multi-microprocessor control system of the main ring magnet power supply for the KEK 12 GeV PS
- 1. National Lab. for High Energy Physics, Oho-machi, Tsukuba-gun, Ibaraki-ken, 305 (Japan)
Description
The new control computer system has been installed at the last June. The main cpu supervised by the Unix covers man-machine interfacing and correction of current deviation in periodic control algorithm. The two sub-cpu are linked by a LAN and supported by a real time multi-task monitor. The one as the output process controller distributes 15 control patterns to 16-bit D/A converters at every 1.67 ms synchronized 6 phase ac line. The other as the input logs B Qf and Qd magnet current and voltage by 7 sets of 16-bit ADC at the same clock. Resulting precision of the currents from beam injection to flat top would be estimated at about a resolution limit of ADC except for current ripple. Ripple currents estimated at several times of an intrinsic ripple in the DCCT
Additional details
Publishing Information
- Publisher
- IEEE Service Center.
- Imprint Place
- Piscataway, NJ (USA)
- Imprint Title
- Proceedings of the 1987 IEEE particle accelerator conference: Accelerator engineering and technology
- Journal Page Range
- p. 689-691.
Conference
- Title
- Particle accelerator conference.
- Dates
- 16-19 Mar 1987.
- Place
- Washington, DC (USA).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 19084026
- Subject category
- S43: PARTICLE ACCELERATORS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ALGORITHMS; ARRAY PROCESSORS; BEAM INJECTION; GEV RANGE; KEK SYNCHROTRON; MAGNETS; MAN-MACHINE SYSTEMS; ON-LINE CONTROL SYSTEMS; REAL TIME SYSTEMS
- Descriptors DEC
- ACCELERATORS; COMPUTERS; CONTROL SYSTEMS; CYCLIC ACCELERATORS; DIGITAL COMPUTERS; ENERGY RANGE; EQUIPMENT; ON-LINE SYSTEMS; SYNCHROTRONS