1May, IPPP- Imperial College, London1 NF activities at IC (part II) m. apollonio

2May, IPPP- Imperial College, London2 - FETS - MICE - NF Decay Rings Key issues for Neutrino Factory: - High-power target - Ionisation cooling - Rapid (large acceptance) acceleration - RF cavity (in magnetic field and superconducting)

FETS (RAL) The design constraints and cost of a large facility like the neutrino factory, depends on the quality of the beam that is produced in the Front End. It is therefore essential to understand what the beam looks like after the chopper. The Front End Test Stand will be equipped with a set of conventional diagnostic devices (e.g. current transformers, Spectrometers, etc.) and newly developed, non-destructive laser based system to measure the beam profile and quality. L. Jenner, S. Jolly, A. Kurup, D. Lee, K. Long, J. Pozimski, P. Savage -High Power (5MW) Pulsed Proton Source (50 Hz, 3 MeV) - H- Penning source: 65 kEV, 60 mA, 2ms pulse - LEBT: solenoidal channel - RFQ: 1 st acceleration stage (65 keV  3 MeV) - Chopper: prepares the beam for next acceleration (in bunches) - MEBT: Quadrupoles + RF bunching - diagnostic: conventional & non destructive laser: beam profile + emittance 3May, IPPP- Imperial College, London3

MICE - Demonstrate feasibility of ionisation cooling in a variety of initial momenta/emittances - cooling := emittance reduction - emittance := beam occupancy in transverse phase space (x,x’,y,y’) - need to be FAST:  = 2.2  sec  use energy loss by ionisation - recover Pz by means of cavities M Apollonio, P J Dornan, J Leaver, K Long, J Sedgbeer, G Barber, A Jamdagni, A Fish, A Dobbs, A Alekou Proton Cooling   x x’ 4May, IPPP- Imperial College, London4 LH2 absorber acceleration-RF

MICE: theory to practice … COOLING SECTION TRACKERS PId DETECTORS 11 22 measure:  T before and after the channel (  to 0.1%) & transmission of the channel measure:  T before and after the channel (  to 0.1%) & transmission of the channel 5May, IPPP- Imperial College, London5

RAL 6May, IPPP- Imperial College, London6 IC active in: - tracker(s) - ISIS beam studies - re-design of new target -  -beam line

D2 Q4 D1 Q1 Q2 Q3 Q5Q6Q7Q8Q9 LINDE MLCR v BEAMLINE: US/DS in place v DETECTORS/ MONITORS: in place and in DAQ chain v LINDE Refrigerator v MLCR x TARGET x SOLENOID: still in progress RAL 7May, IPPP- Imperial College, London7

RAL 8May, IPPP- Imperial College, London8 re-design of the Target (and control)

Decay Rings for the NF P  = 25 GeV/c L=1608 m High  straights Resonance diagram with/without sextupole correction Tracking studies of Dynamic Aperture Decay Ring Twiss Parameters S. M. H. Alsari, M. Apollonio, M. Aslaninejad, P. Dornan, K.Long, S. Jolly, A.Kurup, J. Pasternak, J. Pozimski, B.P. Savage, D. Lee

G4Beamline reproduction of the Decay Ring muons let decay  electrons virtual detector planes QF QD Dipole straight section matching section arc Decay Rings for the NF 10May, IPPP- Imperial College, London10