2015-03-24 physics coordinator report¶

Run planning meeting¶

• Following Wednesday's run planning meeting, essentially no change to the plan. New version of the note uploaded with added 50 % contingency column in table 3.
• Would like to make a follow up meeting in May. Should we add in dates (or at least sort by time) to the plan?

Physics shifter¶

• First "physics shift" over the weekend
  • A bit rushed to get the "analysis" done for Monday meeting, will try again for Friday
  • I think it is an okay start
• Physics shifter script has been prepared
  • Plan is to merge into MAUS eventually
• Two routes to go down:
  1. Physics shifter script runs as an automated postprocessor on e.g. PPD cluster somewhere
  2. Physics shifter script runs as an automated postprocessor following GRID jobs
1. PPD cluster (Rogers preference)
   • More easy for Rogers to manage
   • Checks that data is stored correctly and accessible from web (mimics analysis workflow better)
   • Results can go to e.g. http://micewww.pp.rl.ac.uk/analysis area
2. GRID
   • Requires less web traffic
   • Results can go into the RECON tarball; keeps it with the data, but makes it quite inaccessible

Physics block challenge¶

• Have done an analysis on the physics block challenge dataset
• With some beam selection, reconstructed emittance in/out to 6.26/6.29
  • Have not unblinded the data yet
• Next up:- check the coil current settings make sense
• Full report at analysis meeting on Thurs

Organisation¶

• Conversation has led to the following provisional break down of MCS studies
  • Field off MCS - Nugent/Glasgow
  • Field on MCS - Pidcott/Warwick
  • Energy Loss - Gardner/Brunel
  • Emittance reduction - Heidt
• Analysis dashboard

Analysis Code¶

• A new version of xboa was released, 0.16.2, and is now available with MAUS
• Another version will follow the physics block challenge
• Release notes below:

Release Notes v0.16.2
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- A weighting algorithm was added for statistical weighting of bunches using
  voronoi diagrams in xboa.bunch.weighting
- Modifications were made to enable xboa to be integrated with MAUS
- Few documentation fixes

Release Notes v0.16.1
---------------------
Bug fixes:
- Fixed a bug causing an intermittent memory error in bunch module
- Fixed a bug where tune calculations can fail in FFTTuneFinder if the number of
  turns is odd