| Paper |
Title |
Page |
| WEPLS136 |
Pulsed Magnet Power Supplies for Improved Beam Trajectory Stability at the APS
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2697 |
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- B. Deriy, L. Emery, A.L. Hillman, G.S. Sprau, J. Wang
ANL, Argonne, Illinois
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New power circuit and control electronics have been implemented in the septum power supplies at the Advanced Photon Source (APS). The goal was to meet a low pulse-to-pulse relative amplitude jitter of about ± 5·10-4 for trajectory stability in the booster-to-storage ring transport line. The original power supply design produced a jitter of ± 15e-4, which made injection tuning difficult. The jitter for the two new booster pulsed magnet supplies is now 1.1e-4, as inferred by a beam-based statistical analysis. A common design was made for all of the septum magnet power supplies at the APS. The system, regulation algorithms, the results achieved, and the current regulation stability issues will be discussed.
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| THPLS074 |
Ground Vibration Measurement at NSRRC Site
|
3454 |
| |
- D.-J. Wang, H.-P. Chang, J.-R. Chen, J.P. Wang, J. Wang
NSRRC, Hsinchu
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For the future 3GeV TPS project in the NSRRC, ground vibration would be important for this low emittance machine. We have monitored the ground vibration under various experimental conditions at the NSRRC site. Sensors were installed in the bare site, underground 35 meters deep and ground of TLS storage ring, including an electricity shutdown in the NSRRC. From the collected data, we compare the effect about day and night, traffic effect, internal machine vibration propagation. Specific vibration sources and their propagations are also discussed.
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