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Ross, M.

Paper Title Page
IT01 Review Of Diagnostics For Next Generation Linear Accelerators 1
 
  • M. Ross
    SLAC, Stanford Linear Accelerator, Stanford, CA, USA
  
  New electron linac designs incorporate substantial advances in critical beam parameters such as beam loading and bunch length and will require new levels of performance in stability and phase space control. In the coming decade, e- (and e+) linacs will be built for a high power linear collider (TESLA, CLIC, JLC/NLC), for fourth generation X-ray sources (TESLA FEL, LCLS, Spring 8 FEL) and for basic accelerator research and development (Orion). Each project assumes significant instrumentation performance advances across a wide front. This review will focus on basic diagnostics for beam position and phase space monitoring. Research and development efforts aimed at high precision multi-bunch beam position monitors, transverse and longitudinal profile monitors and timing systems will be described.  
PM09 Design of a Multi-Bunch BPM for the Next Linear Collider
Work supported by the US Department of Energy, contract DE-AC03-76SF00515 		183
 
  • A. Young, S.D. Anderson, D. Anderson, J. Nelson, M. Ross, S.R. Anderson, T.J. Smith, H.T. Naito, N. Terunuma, S. Araki
    SLAC, Stanford Linear Accelerator, Stanford, CA, USA
  
  The Next Linear Collider (NLC) design requires precise control of colliding trains of high-intensity (1.4×1010 particles/bunch) and low-emittance beams. High-resolution multi-bunch beam position monitors (BPMs) are required to ensure uniformity across the bunch trains with bunch spacing of 1.4ns. A high bandwidth (~350 MHz) multi-bunch BPM has been designed based on a custom-made stripline sum and difference hybrid on a Teflon-based material. High bandwidth RF couplers were included to allow injection of a calibration tone. Three prototype BPMs were fabricated at SLAC and tested in the Accelerator Test Facility at KEK and in the PEP-II ring at SLAC. Tone calibration data and single-bunch and multi-bunch beam data were taken with high-speed (5Gsa/s) digitisers. Offline analysis determined the de-convolution of individual bunches in the multi-bunch mode by using the measured single bunch response. The results of these measurements are presented in this paper.