论文信息 - PERFORMANCE IMPROVEMENT OF THE SPring-8 LINAC

PERFORMANCE IMPROVEMENT OF THE SPring-8 LINAC

The beam stability of the SPring-8 linac has been improved by means of reinforcement of monitor systems, reduction of RF variations and beam energy compensation. A BPM system employing shared memories for fast data acquisition was completed. A quasi non-distractive profile monitor using OTR was installed in a chicane section to observe the beam energy and energy spread. A beam trigger pulse and a reference RF signal (2856 MHz) were synchronized to stabilize beam bunches. A beam energy compression system was installed to compensate the energy variation and reduce the energy spread due to beam loading. As a result, a minimum beam energy fluctuation of 0.01% (rms) was achieved and the reduced energy spread realized highcurrent injection into a synchrotron.

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