3. MEBT Update FETS Meeting 2/2012 07/03/2012 Imperial College

4. MEBT Line QuadrupolesRe-bunching cavities RFQ Fast ChopperSlow Chopper Chopper beam dumps Diagnostics beam line with beam dumps BPM, Steer Current Monitor Profile Monitor BPM, Steer Current Monitor Example of a quadrupole configuration Q1 = 16.8 T/mQ5 = 6.5 T/mQ9 = 16.7 T/mC1 = 115 kV Q2 = -19.9 T/mQ6 = -7.3 T/mQ10 = -10.6 T/mC2 = 63 kV Q3 = 20.9 T/mQ7 = 6.2 T/mQ11 = 8.9 T/mC3 = 54 kV Q4 = -18.1 T/mQ8 = -16.6 T/mC4 = 43 kV

5. Beam Pipe Case 1 – 30 mm beam pipe aperture. – Using “design” beam distribution. Input Distribution Ex0.27 Pi.mm.mrad Ey0.27 Pi.mm.mrad Ez0.34 Pi.mm.mrad

6. Beam Pipe Case 2 – 40 mm beam pipe aperture – Using “design” beam distribution

7. Beam Pipe Case 3 – 30 mm beam pipe aperture – Using FETS RFQ output distribution Input Distribution Ex0.30 Pi.mm.mrad Ey0.31 Pi.mm.mrad Ez0.49 Pi.mm.mrad

8. Beam Pipe Case 4 – 40 mm beam pipe aperture – Using FETS RFQ output distribution

9. Aperture (mm)3038 Freq (MHz)324 Q2653925536 ZTT (MOhm/m)10.986.65 T0.610.50 Power (kW)13.5422.36 Kilp1.3321.63 Effective Voltage (kV)160 Bunchers

10. Chopper Clarification RFQ Distribution Beam Current Voltage Coverage Factor Safety margins

11. Removing End Matching Section? X 30 mm Y Phase 120 deg QuadrupolesRe-bunching cavities Fast ChopperSlow Chopper Chopper beam dumps