Attendees: Brailsford, Nonnenmacher, Atkin, Korzenev, Parker, Chen-Wishart, Richie-Yates, Valder, Wascko, Jones, Monroe, Kaboth, Dunne, Hamacher-Baumann

Working group reports

CCD

• Index bug.
• Dimensionality of histogram bug found.
• All pixels are discretised in units of 0.25 ADU.  Raw images should be integers.  To be double checked.
• Spark killer being updated so that a spark in one image kills all 4 images

Waveform

• No RAPtorr development
• Being used for analysis now

Global

• No updates this week

Other

•  Talk by Ed
  • Beam database development - extracts information from current DBs
  • Information from elog used to find runs with specific parameters: No. Moderator blocks, collimator change, electron target change etc.
  • Magnet current vs time presented, shows periods of long term change and some significant outliers.
    • Followup questions with CERN beam group regarding measured 0 current points
  • Database farm access - an ongoing battle.  An email to sys-admin is needed
    • If multiple access is a problem, may be necessary to implement a ’smart’ job submitter
    • Need to check where DMTPC database is located and check their methodology
  • Time distribution of TPC waveforms shown for all anodes
    • #TODO
      • Apply threshold to remove KeV electron bursts
      • Suggestion to plot pulse height vs time

CCD Labelling

• CCD index stored in dmtpc/raptorr does not correspond to the indices used in various codes in dmtpc; the element on the CCD vector is used instead.
• Change implementation so that the camera config struct’s ccd_index variable tracks the vector element index.

ToF analysis

• Talk by Seb
  • Various figures of merit for the paper put forward

  • Off-axis angle currently measured from S1.

    • Currently using beam database information work to calculate beam steering/beam axis.
  • Particle incidence rate for various ToF coincidences shown
    • Necessary to correct for the geometric acceptance of the ToFs (and dead time in the case of S3) when making comparisons

HPTPC instrumentation paper

• No updates for this week
• Internal deadline for mid-end February

Beam flux paper

• Focussed on flux analysis, writing to follow.

RAPtorr workshop discussion

• Investigate reconstruction prior to next workshop
  • Team CCD should push forward on implementing a first draft of clustering in the next week
• We will need a simulation to develop the reco + selection
• Further discussion of plans and goals at next meeting

AOB

•  Alexander will send his VCI2019 talk around later today.  Please read.