Faraday Cup Award High Sensitivity Tune Measurement using 法拉第杯奖高灵敏度调谐测量中的应用.pptVIP

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Faraday Cup Award High Sensitivity Tune Measurement using 法拉第杯奖高灵敏度调谐测量中的应用.ppt

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Faraday Cup Award High Sensitivity Tune Measurement using 法拉第杯奖高灵敏度调谐测量中的应用

* High Sensitivity Tune Measurement using Direct Diode Detection 2005: Tevatron – BBQ front-end is run on batteries Measurement by C.-Y. Tan (FNAL) H plane V plane BBQ front-end on batteries BBQ front-end on itsbuilt-in power supply H plane V plane * High Sensitivity Tune Measurement using Direct Diode Detection Processing the BBQ signals in an FPGA on a VME board Sound card was good for studies, but we needed a 24-bit ADC/DAC module integrated to the VME world of the CERN control system. 3rd key person: Andrea Boccardi. FPGA processing of ADC samples, integer arithmetic with on-line sine/cosine calculation, 180 dB dynamic range FFTs. * High Sensitivity Tune Measurement using Direct Diode Detection 2005: CERN LEIR (ion machine) gets its BBQ NOMINAL, regular kick 500 V, every 10 ms Cycle “NOMINAL”, no excitation coasting beam coasting beam * High Sensitivity Tune Measurement using Direct Diode Detection 2008: CERN Proton Synchrotron (PS) gets its BBQ BBQ OLD * BPLX D6R4.B1 BPLX B6R4.B2 2008: LHC tune installation High Sensitivity Tune Measurement using Direct Diode Detection * High Sensitivity Tune Measurement using Direct Diode Detection The tune measurement system seen from the control room A beam instrument is always seen from the control room through a software window. “The chain is as strong as its weakest element”. 4th key person: Ralph Steinhagen. * FFT1 continuous system at βH? βV? 400 m, B2, 1 bunch of 5×109, fill #909, 13:35 11/12/09, 8K FFT @ 1 Hz, 20 FFT average LHC beam spectrum, one pilot bunch Absolute amplitude calibration was done by exciting the beam to the amplitudes seen by regular LHC BPMs. High Sensitivity Tune Measurement using Direct Diode Detection * SLS beam spectrum measured with the diode detector system Absolute amplitude calibration was done by exciting the beam to the amplitudes seen by regular SLS BPMs. High Sensitivity Tune Measurement using Direct Diode Detection * High Sensitivity Tune Measurement using Direct Diode Detection 4