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TY - CPAPER AU - Krejcik, P. AU - Campell, M.L. AU - D'Ewart, J.M. AU - Loos, H. AU - Luchini, K. TI - Performance of the New Fast Wire Scanner at the LCLS J2 - Proc. of International Beam Instrumentation Conference (IBIC2015), Melbourne, Australia, 13-17 September 2015 AB - A new fast wire scanner based on a linear DC servo motor acting through dual bellows has been developed at SLAC. After successful beam testing at LCLS we are now replacing all the old style stepping motor driven scanners with the new type. The fast scanner design allows full emittance scans to be completed in seconds rather than minutes as before, facilitating speedier tuning of the accelerator. The low vibration design allows for wire speeds up to 1 m/s, making it also suitable for use in the new LCLS-II machine where high wire speeds are essential to prevent wire breakage from the high power electron beam with a 1 MHz repetition rate. The wire scanner design is presented along with beam measurements demonstrating its performance. PB - JACoW CY - Geneva, Switzerland SP - 547 EP - 549 KW - controls KW - emittance KW - interface KW - operation KW - shielding DA - 2016/01 PY - 2016 SN - 978-3-95450-176-2 DO - 10.18429/JACoW-IBIC2015-TUPB082 UR - http://accelconf.web.cern.ch/AccelConf/IBIC2015/papers/tupb082.pdf ER -