Transverse bunch-by-bunch feedback system for time-resolved experiments at PLS-II.
J Synchrotron Radiat
; 28(Pt 5): 1417-1422, 2021 Sep 01.
Article
em En
| MEDLINE
| ID: mdl-34475289
ABSTRACT
A description of the upgraded bunch-by-bunch feedback system for time-resolved experiments at Pohang Light Source II (PLS-II) is provided. The bunch-by-bunch feedback system has been upgraded to increase the single-bunch current in the hybrid fill pattern of the PLS-II facility. The project is part of the SPring-8 and PLS-II collaboration. The main features of the upgrade are to employ a single 500â
MHz analog-to-digital converter (ADC) instead of the previous four 125â
MHz interleaved ADCs for 500â
MHz rate, to replace a single-loop two-dimensional feedback with two independent one-dimensional feedback loops, to implement the tune measurement function with a single bunch, and mainly to implement single-bunch and stretcher control. The realization of a 400â
mA hybrid fill pattern including a 10â
mA single bunch demonstrates the precision of the upgraded bunch-by-bunch feedback system.
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MEDLINE
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En
Ano de publicação:
2021
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Article