Abstract

The construction of the compact Energy Recovery LINAC (cERL) in KEK was completed at the end of 2013, and the beam commissioning has begun. Solidstate amplifiers were employed as the RF power sources in the main LINAC (ML). Cavity field feedback and tuner feedback control were performed using the digital low-level RF (LLRF) system. Large microphonics was observed, but the effect was suppressed well by the digital LLRF system.

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