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Published byErnest Hutchinson Modified over 9 years ago
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N. BlaskovicFONT Meeting1 November 2013 week 2 FONT shift summary N. Blaskovic
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Introduction Data from shift on 28 th November 10x1 (standard) optics used on day Variable attenuators: 40 dB throughout FONT Meeting2N. Blaskovic
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Intra-chamber misalignment Minimising I and Q simultaneously in all 3 IP BPMs was unsuccessful Mover tilt required for beam to lie on axis of all BPMs appears to be outside mover range Q remains large if beam does not travel on BPM axis regardless of beam position FONT Meeting3N. Blaskovic
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Intra-chamber misalignment FONT Meeting4N. Blaskovic IPAIPB IPC ZV2X 0.184 A (~nominal) ZV2X 0.224 A max min max min mover base beam ?
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Calibrations IP BPM calibrations performed with beam waist on BPM being calibrated Calibrations performed with beam and mover tilt that allowed (I, Q) ≈ (0, 0) at some point over calibration: –ZV2X: 0.184 A for IPA and IPB calibration –ZV2X: 0.224 A for IPC calibration FONT Meeting5N. Blaskovic
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FONT Meeting6N. Blaskovic IPAmoverScan3 on 281113
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FONT Meeting7N. Blaskovic IPBmoverScan2 on 281113
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FONT Meeting8N. Blaskovic IPCmoverScan5 on 281113
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Jitter runs Jitter runs performed with different waists. Expected jitter if waist at IP (Tauchi-san): FONT Meeting9N. Blaskovic IPAIPBIPIPC jitter 0
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FONT Meeting10N. Blaskovic jitRun1 on 281113 40 dB waist at IPB !?
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FONT Meeting11N. Blaskovic jitRun2 on 281113 40 dB waist at IPA drift?* * No drift removal, sorry!
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FONT Meeting12N. Blaskovic jitRun3 on 281113 40 dB waist at IPA drift?* * No drift removal, sorry!
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FONT Meeting13N. Blaskovic jitRun4 on 281113 40 dB waist at IPA IPAIPBIPIPC jitter 0 as expected
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FONT Meeting14N. Blaskovic jitRun5 on 281113 40 dB waist at IPA drift?* * No drift removal, sorry!
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FONT Meeting15N. Blaskovic jitRun6 on 281113 40 dB waist at IPB IPAIPBIPIPC jitter 0 as expected !?
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FONT Meeting16N. Blaskovic jitRun7 on 281113 40 dB waist at nominal IP IPAIPBIPIPC jitter 0 as expected
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FONT Meeting17N. Blaskovic jitRun8 on 281113 40 dB waist at IPC IPAIPBIPIPC jitter 0 as expected
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