BPM Calibration

BPM Calibration

This script computes the calibration factors for the LHC BPMs using either a beta from phase method or a dispersion one by comparison of beam optics quantities calculated independent of and dependent on BPM calibration. Namely, the default method compares beta-functions calculated from phase advances (BPM-calibration independent) and from amplitude of betatron oscillation (calibration dependent). The other method compares dispersion, and its use is currently discouraged due to worse resolution.

Arguments:

--Required--

• inputdir (Path):

  Measurements path.

  flags: [‘--input’]

• ips (int):

  IPs to compute calibration factors for.

  flags: [‘--ips’]

  choices: [1, 4, 5]

• outputdir (Path):

  Output directory where to write the calibration factors.

  flags: [‘--outputdir’]

--Optional--

• method (str):

  Method to be used to compute the calibration factors. The Beta function is used by default.

  flags: [‘--method’]

  choices: ('beta', 'dispersion')

  default: beta