Dr Feng Qiu (KEK)
10/4/13, 9:30 AM
The 35 MeV compact Energy Recovery Linac (cERL) is a test facility of the future 3-GeV ERL project at KEK. At present, the RF system for a buncher cavity and total of 3 injector cavities were constructed. A FPGA-based LLRF system was established to stablize the RF field. The 0.1% and 0.1° stabilization goals can be achieved by the closed-loop operation. A gain scanning experiment for...
Mr Ramakrishna Bachimanchi (Jefferson Lab)
10/4/13, 9:55 AM
The CEBAF 12GeV energy upgrade cavities have a QL of 3x107 and operate at gradients of 20 MV/m. Operation of these cavities is challenging due to their microphonic sensitivity, cavity to cavity mechanical coupling and Lorentz force detuning. Before our last shutdown, 16 of these cavities (two cryomodules) were operated for six months in the CEBAF LINAC. During this run field control, fault...