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Adhoc BI/TB on SLAWG requirements

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866/2-D05 (CERN)

866/2-D05

CERN

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Description

Follow-up from https://indico.cern.ch/event/591261/

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- Verify low frequency content from slow extracted beam (beginning and middle) (BI)

(SEM foil acquired with a scope in BA2 or BA80)

- Verify high frequency contents from extracted beam (beginning and middle) (BI/RF)

(Diamond BLM in TT20)

- Verify with NA experiments the amount of modulation they accept (which frequency) (ABP/OP)

- Check results at beginning of spill with high MOPOS gain (after RF off) (BI/OP)

Rhodri's and Matthew's notes:

  • Add nominal bump amplitude to the FS document as it is importnant for BPM resolution (aperture): action for Matthew
  • Ask experiments (H. Wilkens and L. Gatignon) for n x 43 kHz spectrum during the spill (too low frequency for PU in ring): action for Matthew
  • Check if modulation is acceptable for experiments, frequency e.g. 800 MHz and amplitude (modulation factor): action for Matthew to speak to Richard Jacobsson et al.
  • Check instrumentation already installed and status of scintillator monitor that was used previously in TT20: action for Verena and BI
  • TE-ABT/BE-OP to suggest pairs of locations for BPM location in LSS2: action for Matthew
  • Investigate if BSI’s in TT20 can be hooked up to a spectrum analyzer to measure high frequency spill components: action for BI
    • Of interest: 200 MHz and 43 kHz
  • Determine modulation level throughout the spill using BPMs in HCA4 hooked-up to a spectrum analyser: action for BI
    • Of interest: 200 MHz
  • Check movement of beam using BSRT and BGI as function of time during spill: action for Matthew to contact James Storey and Georges Trad and run parasitic MD on OP cycle
  • Investigate MD on flat-bottom, injecting with 200 MHz off and recapturing with 800 MHz to check response of BPMs: action for BI and OP, Matthew will try and coordinate such an MD.
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