A   B   C   D   E   F   G   H   J   K   L   M   N   O   P   R   S   T   U   V   W   Y   Z    

Terunuma, N.

Paper Title Page
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.