High Resolution BPM Upgrade for the ATF Damping Ring at KEK
  A beam position monitor (BPM) upgrade at the KEK Accelerator Test Facility (ATF) damping ring has been accomplished, carried out by a KEK/FNAL/SLAC collaboration under the umbrella of the global ILC R&D effort. The upgrade consists of a high resolution, high reproducibility read-out system, based on analog and processing, and also implements a new automatic gain error correction schema. The technical concept and realization as well as results of beam studies are presented. 
N. Eddy, C. Briegel, B. Fellenz, E. Gianfelice-Wendt, P. Prieto, R.   Rechenmacher, A. Semenov, D. Voy, M. Wendt, D. Zhang (...
physics.acc-ph