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BLM data from CTF3

BLM data from CTF3. Erik Branger 10 jun 2013. BLM detectors at CTF3. 8 ACEM PEP-II detector and diamond . Fiber – moved closer to the beam line. ACEM, PEP-II and diamond. ACEM, PEP-II and diamond. ACEM, PEP-II and diamond. PEP-II and diamond give similar signal

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BLM data from CTF3

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  1. BLM data from CTF3 Erik Branger 10 jun 2013

  2. BLM detectors at CTF3 • 8 ACEM • PEP-II detector and diamond. • Fiber – movedcloserto the beamline

  3. ACEM, PEP-II and diamond

  4. ACEM, PEP-II and diamond

  5. ACEM, PEP-II and diamond • PEP-II and diamondgivesimilar signal • ACEM gives littlestructure

  6. Fiber signal • Downstream signal looks saturated • Upstream signal looks fine, backgroundcan be subtracted

  7. Fiber signal • Most of the remainingupstream signal looks like background 220 ns later – losses at end of TBL?

  8. BPM data • A BPM is installedaftereveryquadrupole • Gives total currentpassingthrough it – usetoestimatelosses • A calibrationwasdone by the end of TBL operations

  9. BPM data

  10. BPM data

  11. To do • Comparemeasured signals withsimulated signals. • Requires information about signal amplification, calibration, detectorsensitivity… • For now, look at integrated signal and calculate total beam loss.

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