INDUSTRIAL PRODUCTION OF SUPERCONDUCTING 1.3 GHZ ACCELERATOR MODULES AND COMPONENTS FOR FEL APPLICATION
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Daresbury Laboratory contracted ACCEL in April for the delivery of two superconducting 1.3 GHz modules for the R&D phase of their 4GLS [1] project. The modules are delivered with guaranteed performance on cavity voltage and cryogenic losses. The modules contain 2 TESLA [2] type cavities each and are of the design developed at Forschungszentrum Rossendorf [3]. To investigate the capabilities of our cavity treatment and preparation techniques, our infrastructure was further upgraded to allow chemical treatment and high pressure rinsing of TESLA cavities. First test results on TESLA cavities produced for BESSY are very encouraging. 23 MV/m accelerating gradient were achieved in the cold vertical test. In addition 12 power couplers of the TTF III type were produced for DESY and BESSY. The conditioning of those couplers was performed at DESY in a very short time of approximately 50 hours demonstrating our high quality surface treatment capabilities.
[1] N. Bliss,et al. 4GLS: a new type of fourth generation light source facility , 2003, Proceedings of the 2003 Particle Accelerator Conference.