AGS as a Proton Driver for a Neutrino Factory.ppt

AGS as a Proton Driver for a Neutrino Factory W. T. Weng Brookhaven National Laboratory NuFact Mu-Coll. Collaboration UCLA, CA, Jan/29–Feb/1, 2007 Outline Evaluation of parameter dependence Possible design parameter phase space Improvements on the AGS, and its difficulties Summary and Conclusions Considerations of parameters we consider the effects of Energy Repetition Rate Intensity Bunch Length Number of bunches Of the Proton Driver Proton per pulse required for 4 MW 10 Hz 25 Hz 50 Hz 10 GeV 250 × 1012 100 × 1012 50 × 1012 20 GeV 125 × 1012 50 × 1012 25 × 1012 Process mesons through Cooling Analysis II Post Cooling Count mesons within acceptance of 30π mm Post-cooling 30π Acceptance Preferred Beam Energy For Negatives the peak occurs for 6 Gev Proton KE 11 GeV For Positives the peak occurs for 9 Gev Proton KE 19 GeV Consensus: 10 GeV is a good place to start Target/Beam Baseline used for comparison Summary of Target Performance 1 MW/50 Hz 12.0 e+12 ppp YES 4 MW/50 Hz 48.0 e+12 ppp NO 1 MW/200 Hz 3.0 e+12 ppp YES 4 MW/200 Hz 12.0 e+12 ppp MAYBE Design Parameter Phase Space 8.0 GeV Energy 20.0 GeV Rep Rate ~ 50(25) Hz Intensity 50*10**(12) ppp, at 10(20) GeV ( very difficulty with solid target ) 4. Bunch Length 3 ns, for longitudinal acceptance 5. Number of bunches 3 ~ 5 2 MW AGS Proton Driver AGS proton driver layout for alternate injector linac design. Methods of generating Short Bunch Short bunch can be generated by a compressing RF system It can also be generated by bunch rotation in the ring, or in the external beam line ( both of them need extreme high rf voltage) We try to do it by getting to the transition energy at extraction( low voltage is sufficient ) AGS parameters at Transition Beam Parameters around Transition Typical va