Advanced Photon Source booster synchrotron beam position monitor upgrade and applications

Author

Sereno, Nicholas S. ; Lenkszus, Frank ; Lill, Robert M.

Author_Institution

Argonne Nat. Lab., IL, USA

Volume

4

fYear

2003

fDate

12-16 May 2003

Firstpage

2435

Abstract

The Advanced Photon Source operates in top-up mode, which adds charge to the storage ring every two minutes to maintain the current at 102±1.0 mA. This requires the booster synchrotron to operate efficiently and reliably. The booster BPM system was upgraded to overcome a severe performance limitation due to operation of the receiver at the low end of its input power range. The upgrade provided a 25-dB improvement in overall system gain. This improved dynamic range and resolution, and reduced other systematic errors. The booster BPMs have been used in studies including measurements of ring circumference, synchrotron and betatron tune, and orbit correction. Software feedback corrections of the energy and RF phase errors at injection have been implemented for routine operations using the BPM beam history/DSP-based synchrotron tune measurement. Transverse injection feedback is presently being commissioned. The latest experimental results using the upgraded BPMs will be presented.

Keywords

booster injectors; electron accelerators; nuclear electronics; particle beam diagnostics; particle beam injection; physics computing; storage rings; synchrotrons; Advanced Photon Source; BPM beam history; BPM system upgrade; DSP-based synchrotron tune measurement; RF phase errors; beam position monitor; betatron tune; booster synchrotron; input power range; orbit correction; overall system gain; ring circumference; software feedback corrections; storage ring; systematic errors; top-up mode; transverse injection feedback; Dynamic range; Energy resolution; Extraterrestrial measurements; Feedback; Maintenance; Monitoring; Optical receivers; Power system reliability; Storage rings; Synchrotrons;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the

ISSN

1063-3928

Print_ISBN

0-7803-7738-9

Type

conf

DOI

10.1109/PAC.2003.1289145

Filename

1289145