Rw. Alkire et al., THE X8C DUAL WIRE BEAM POSITION MONITOR, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 350(1-2), 1994, pp. 13-16
Design and performance of a UHV compatible dual wire beam position mon
itor are presented with specific applications to beamline X8C at the N
SLS. This device can determine the relative vertical position of the X
-ray beam to within +/- 5 mum. At X8C, the wire monitor is used to obs
erve the reproducibility of the X-ray beam position after each new ele
ctron fill and to watch for instabilities that may arise during stored
beam conditions. Data from the NSLS X-ray ring pick-up electrodes are
presented to independently assess wire monitor accuracy.