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Key Insights from the Alignment and Beam Optimization Meeting - June 2014

This meeting summary highlights significant discussions on beam alignment, optimization, and analysis based on methodical steps outlined in recent research. Notable topics included the progress in Step IV and Step V analyses, configuration of the AIDA alignment package, and the alignment confirmatory results on Q789. The report emphasizes the use of field mapping, wedge absorbers, and cooling channel optics. A tutorial by Adam Dobbs on MAUS and tracker reconstruction was particularly appreciated. Overall, the meeting yielded important progress and identified areas for further investigation in beam optimization.

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Key Insights from the Alignment and Beam Optimization Meeting - June 2014

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  1. 1/7 Analysis Parallel Summary V. Blackmore CM39 27thJune, 2014

  2. 2/7 A busy meeting! Two papers + Step IV analysis preparation underway! Plus lots of conversations about Alignment Easily quantified cuts* Wedge absorbers Beam library* Polarisation* Field maps Step V Beam matching and optimisation* Excellent MAUS tutorial by Adam Dobbs Not ready, but we do know where our helmet is. Data * Excellent work & helpful discussion topics (no plots to show during this summary talk – see talks by C. Hunt, J. Nugent & S. Middleton for more details)

  3. 3/7 E. Overton Alignment G4Beamline • General alignment, tracker alignment • AIDA alignment package: sounds suspiciously helpful! • Alignment of Q789 confirmed, with 4mm resolution, using beam profiles at TOF1 • G4Beamline and data compatible 2010 Data E. Overton

  4. 4/7 Focus Coil 1: Field Maps • Flip mode: 0, 50, 100, 150, 180A • Sol mode: 0, 50, 75, 100, 114, 120A • Data analysis underway Flip mode (150A) Flip mode (150A) Solenoid mode (100A)

  5. 5/7 C. Rogers Wedge Absorber • Objectives • First priority is to observe longitudinal cooling • Second priority is to observe longitudinal and 6D cooling • Third priority is to observe transverse, longitudinal and 6D cooling • Fourth priority is to get cooling over a broad range of conditions • Tests our knowledge of cooling channel beam optics C. Rogers mm mm MeV mm Can do something very good in just two weeks running.

  6. 6/7 Step V Studies • Baseline Steps V and VI being studied • First MC truth, then reconstructed tracks, then systematic studies • First Step V MC results in quite some time! • Some common features with Step IV analysis work • Lead to an “online” beam tuning session D. Speirs

  7. 7/7 Finally… • Wonderful tutorial on using MAUS and tracker reconstruction by A. Dobbs • Highly recommended as a “beginners guide” • One regret: We didn’t record him! • Has been a productive meeting • Still many things to do, but • Much progress made • Identified analysis gaps in beam optimisation and cooling channel tuning, now being addressed and/or thought of more seriously • By CM40: • Pion contamination & EMR paper draft • Muon polarisation & field map MICE notes • Step IV with reduced FC currents expanded to other matrix elements • Tracker (and general) alignment plans underway • Step V studies of reduced FC currents • Plus………

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