Difference: AtfBpmNewLogBook_20111019 (1 vs. 5)

Revision 516 Apr 2012 - webmanip_5foldt2nt_2esh

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Calibration Tone Signal Stability

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Revision 423 Oct 2011 - FrancisCullinan

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META TOPICPARENT name="AtfBpmNewLogBook"

Calibration Tone Signal Stability

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  calmag20.png calang20.png
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Caltones have been stable all weekend.

Friday/Saturday:

stabmsat.png stabasat.png

Sunday:

stabmsun.png stabasun.png

 

Revision 320 Oct 2011 - FrancisCullinan

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META TOPICPARENT name="AtfBpmNewLogBook"

Calibration Tone Signal Stability

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  fourcaltones.png fourcalangs.png
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Results after tunnel access (10:15am) show QM16FF may have stabilised. Fingers crossed for QM11FF.

calmag20.png calang20.png

 

Revision 220 Oct 2011 - FrancisCullinan

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META TOPICPARENT name="AtfBpmNewLogBook"

Calibration Tone Signal Stability

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  fb2ffcalm.png fb2ffcala.png
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Plots of QM16FF and QM11FF on the same plot. There is no correlation, just coincidences. x and y seem to match OK.

fourcaltones.png fourcalangs.png

 

Revision 119 Oct 2011 - FrancisCullinan

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META TOPICPARENT name="AtfBpmNewLogBook"

Calibration Tone Signal Stability

The variation in the calibration tone amplitude along the beamline is plotted below. A 3σ cut has been applied

calvar.png

Variation in the calibration tone phase:

calang.png

There seems to be a few BPMs for which, the calibration tone is not working stably. These are QM16FF, QM11FF and FB2FF. Their magnitudes (left) and phases (right) for the last 24 hours are shown below.

qm16ffcalm.png qm16ffcala.png

qm11ffcalm.png qm11ffcala.png

FB2FF caltone is at low amplitude and has large variation. It is also flipping in phase between ±π.

fb2ffcalm.png fb2ffcala.png

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