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MICE -- what running strategy?

MICE -- what running strategy?. reflections on steps I and II. Aspirational MICE Schedule now (date= ready to take data). 15 September 2007 NB: picture does not include target, beam line, hall infrastructure, electronics, DAQ, shifters etc… !. m. STEP I. STEP II. November 2007.

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MICE -- what running strategy?

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  1. MICE -- what running strategy? reflections on steps I and II

  2. Aspirational MICE Schedule now (date= ready to take data) 15 September 2007 NB: picture does not include target, beam line, hall infrastructure, electronics, DAQ, shifters etc… ! m STEP I STEP II November 2007 STEP III: Winter 2008 STEP IV Fall 2008 STEP V Spring 2009 STEP VI Fall 2009

  3. STEPS I and II Goal: Establish beam match and whether we have all knobs necessary to draw emittance vs. transmission curve. Measure emittance m STEP I November 2007 Unfortunately it seems unlikely that we will be able to have the SW calorimeter for october 2007. This would have allowed to have significant energy measurement (total charge deposited) and particle ID capability without SW calorimeter we are left with only TOF in stepI As soon as we have the spectrometer solenoid the problem no longer exists, the tracker will provide momentum measurement.

  4. Step I: initial beam characterisation Ken Long Goals: Commission beam line Target Magnetic elements Commission ToF Cherenkov Calorimeter? Initial survey of beam alignment and particle fluxes Issues: Calorimeter, but spectrometer not far behind

  5. STEPI 1. running in of the beam line. This assumes that all magnet polarities and fields have been tested by powering during the shut down 2. it is suggested to run-in with negative polarity. (only electrons and negative pions to simplify pile-up in TOF0) 3. it is assumed that TOF0 and TOF1 are complete, so that a resolution of 4cm/sqrt(12) = 1.3cm is available for each particle in both directions.

  6. total estimated beam time requested for stepI: 60 shifts = 20 days.

  7. Step II: Detector commissioning Ken Long Goals: Commission detector systems: Tracker and solenoid Alignment, calibration Magnet off Pencil beamwhat is the requirement here? Demonstrate beams for MICE: Alignment of beam (Lack of) dispersion Range of transverse emittances Range of momenta Demonstrate match into MICE spectrometer Range of transverse emittances Range of momenta 2 weeks each1 week (I dont understand the need for the pencil beam … we measure particle by particle already) here it will be critical to have the knobs to tune this how do we correct for dispersion? quads and diffuser B1 B2 another three weeks total STEPII 7 weeks = 50 days

  8. This is very preliminary and should be looked at by others. It looks as if the running in of MICE stepI and II will require about 70 days of beam time

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