Speaker
Description
The APS upgrade entails a complete replacement of the APS storage ring with
a multi-bend achromat lattice, resulting in a reduction in natural
emittance by more than a factor of 50, nominally to 42 pm-rad. This will
reduce the horizontal beam size at insertion device source points to below
15 microns rms, and the vertical beam size to below 3 microns at 10%
coupling. An extensive R&D program was initiated in 2013 to address
limiting technologies supporting the APS-U, one such involving deployment
of a suite of diagnostic and feedback capabilities encompassing two sectors
of the present APS. This included 16 modernized sets of beam position
monitor (BPM) electronics, a high-power hard x-ray BPM, 8 prototype fast
steering corrector power supplies, a feedback controller operating at 22
kHz sample rate, in-tunnel hydrostatic floor level monitors, and capacitive
proximity sensors monitoring the horizontal and vertical displacement of
critical in-tunnel rf BPM pickup electrodes and x-ray BPM detectors. A
description of the instrumentation and summary of key results will be
presented.
