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| MOD1A01 |
Digital EBPMs at Diamond: Operational Experience and Integration into a Fast Global Orbit Feedback
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feedback, storage-ring, pick-up, controls |
24 |
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- G. Rehm, M. G. Abbott, J. Rowland, I. Uzun
Diamond, Oxfordshire
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We present out experience with the Libera EBPM during the first months of operation at Diamond. Measurement noise and beam current dependence with beam are compared to earlier lab measurements. Where discrepancies between the performance in the lab and in the application are observed, the causes have been investigated. Furthermore, results of the integration of the EBPMs into a FOFB system are presented, including measurements of orbit motion spectra with and without FOFB.
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| WEPC17 |
Fast Orbit Feeback System Upgrade with New Digital Bpm and Power Supply in the Tls
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feedback, controls, electron, vacuum |
346 |
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- C. H. Kuo, J. Chen, P. C. Chiu, K. T. Hsu, K. H. Hu, K.-B. Liu
NSRRC, Hsinchu
- A. Bardorfer
Instrumentation Technologies, Solkan
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The BPMs of orbit feedback loop use analogy type in the TLS that is more than 10 years. The analogy type BPM provides high resolution position detection after signal processing. The new generation digital beam position monitor (DBPM) was performed recently. The BPM electronics are commercial available by using direct RF sampling technology, FPGA, and embedded control environment running GNU/Linux. The programmable nature of DBPM system is beneficial for multi-mode high precision beam diagnostics purposes. Sub-micron resolution is achieved for averaged beam position measurement with high update rate. The DBPM are seamless integrated with existed control system and is compatible with old BPM in the orbit feedback loop. In the same time, the corrector power-supply is also upgraded for wide bandwidth control. The integration of old and new BPM, power-supply control for fast orbit feedback will be discussed in this report.
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