Muon Ionisation Cooling Experiment Overview Roy Preece Particle Physics Department, STFC Compact Muon Sources Workshop 12th January 2015

Content Overview Charge Ionisation Cooling Test Facility (ICTF) MICE MICE Current Status Step IV Cooling Demonstration Milestones

Charge for MICE MICE MICE approved to: Design, build, commission and operate a realistic section of cooling channel Measure its performance in a variety of modes of operation and beam conditions Results will allow Neutrino Factory [and Muon Collider] complex to be optimised Requirements: Normalised transverse emittance: 0.1% Requires selection of 99.9% pure muon sample MICE

ICTF : Ionisation Cooling Test Facility Beamline The Ionisation Cooling Test Facility (ICTF) comprises a specially developed target and beam-line at the ISIS proton synchrotron (800 MeV) at STFC’s Rutherford Appleton Laboratory. The beam-line provides µ, p, π, e at 100 MeV/c to 400 MeV/c. It has been operational for several years, though intensity continues to increase. The ICTF beam and infrastructure have been designed for the study of ionisation cooling, and meet the requirements of the Muon Ionisation Cooling Experiment (MICE), which is installed at the ICTF.

ICTF : Ionisation Cooling Test Facility Beamline EuCARD-2 WP8 Through the EuCARD-2 project WP8, travel and subsistence is available for groups to work at the ICTF during installation and operation of equipment placed on the beamline. Applications for access can be submitted to the MICE Admin for beam time. Application deadlines are every 6 months and allocations are granted for up to 18 month periods Applications are deliberated by the allocations panel every 6 months. Experimental schedules and space availabilities are deliberated and prioritised. Space available for experiments is limited due to the MICE experiment installation Particle identification style detector system could have the scope to fit into the current installation and schedule http://eucard2.web.cern.ch

“MICE Step IV”; data taking 2015/16 Optimised for the study of material properties that affect cooling Liquid Hydrogen will be the primary material investigated. Liquid Hydrogen will only be used at this step. Lithium Hydride will be used during Step IV and the Cooling Demonstration

MICE cooling demonstration Transmission MICE: demonstration of ionization cooling

MICE Update Cooling Demonstration Designs for the RF amplification module exist and all magnet systems are at RAL. Initial design for the partial return yoke extension is underway.

MICE Update Spectrometer Solenoid Magnets Tracking detectors installed Diffuser installed to the Upstream magnet Focus Coil Magnets Second Focus Coil magnet has been successfully tested to full operation currents Magnetic Mitigation JFE material shipped to USA West wall structure complete Compressors installed to the west wall Vacuum Manifold Main manifold line is installed Roughing pumps are in place and ready for use.

MICE Update Partial Return Yoke Under floor structures are being installed Set of frame legs will arrive later this month The main JFE material plates are bing machined 2 Stage Pulse tube cooler compressors installed Tracking detectors installed to the Spectrometer Solenoids. Cryostates cooling and ready for data taking Hydrogen tower fully installed. Final review this month.

Milestones and Schedule Milestones agreed with the MICE Project Board The installation of the Step IV arrangement will be early June. Commissioning of the lattice will start. This is a high risk area of the project with three magnets operating in clos proximity To enable work to commence unhindered the data taking for Step IV must end June 2016. Construction of the cooling Demonstration arrangement will be completed toward the end of March 2017 Commissioning of the magnets and RF acceleration modules complete early May 2017 Data taking on these milestones are set to completed end of UK FY2017/18. Discussion and funding application will be needed to operate through following years

Conclusions ICTF: Available through application through EuCARD-2 Travel and Subsistence available MICE: Will prove the essential ionization-cooling technique Study of the factors that affect ionization cooling (Step IV): Construction complete: Spring 2015 Data taking: Summer 2015—June 2016 Demonstration of ionization cooling: Construction complete: Early 2017 Data taking start: Spring 2017 Poised to deliver the demonstration of ionization cooling