TCO206
KEK, Ibaraki, Japan
Mitsubishi Electric System & Service Co., Ltd, Tsukuba, Japan
FPO007
KEK, Ibaraki, Japan
Mitsubishi Electric System & Service Co., Ltd, Tsukuba, Japan
| Paper | Title | Page |
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TCO206 |
Status of KEK Electron/Positron Injector Linac Control System toward SuperKEKB Upgrade | |
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| Toward SuperKEKB project, the injector linac upgrade is ongoing at KEK in order to deliver the low emittance electron/positron beams with high bunch intensity and small emittance to two independent storage rings. A large number of accelerator components and control devices will be newly installed before the autumn of 2014. Finally, we are aiming at the simultaneous top-up operation for the four independent storage rings including two light sources. The high availability and reliability of control system is strongly required for the long-term stable beam operation under such complex operation schemes. In this presentation, we will describe the control system upgrade plan and status. | ||
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Slides TCO206 [5.879 MB] | |
FPO007 |
Synchronized Beam Position Measurement System for KEK Electron/Positron Injector Linac | |
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| The KEK electron/positron linac is a 600-m-long injector that provides the beams with different energies to four independent storage rings. A nondestructive beam position monitor with the four strip-line type electrodes is utilized for the beam orbit and bunched charge measurement up to 50 Hz with the double bunch operation of 96 ns interval. Using the measured beam position, the beam orbit and energy feedback loops can be operated. The data acquisition of beam position monitor is conducted by the EPICS IOC running on the Windows-based fast digital oscilloscope. In our current system, 23 oscilloscopes process the analog data from 100 independent beam position monitors. Each data acquisition sequence has the time interval of 20 ms and is invoked by the common timing signal generated from the VME-based event timing system. Using the global beam shot number tagged by the event system, our system archived the synchronized beam position measurement among 100 monitors via 23 independent digital oscilloscopes. In this paper, the system description and the result of synchronized beam position measurement is presented in detail. | ||