2. Outline Injection septum SMH42 Injection bumper Resources Conclusion LIU-ABT review 20/11/2015 Status PS injection septa2

3. PS injection septum Conventional eddy current device LIU-ABT review 20/11/2015 Status PS injection septa3 LIUPresent Nominal beam energy [GeV] 2.01.4 Magnetic length [mm]913567 Septum thickness at the downstream extremity (including magnetic screen) [mm] 5.85 Septum thickness at the upstream extremity (including magnetic screen and bumper septum thickness) [mm] 11n.a. Magnet gap height [mm]7060.4 Magnet gap width between conductors [mm]95102 Nominal deflection angle [mrad]5554.7 B gap [T]0.560.689 Integrated field strength [T.m]0.5100.390 Peak current for nominal deflection [kA]31.233.5 Field homogeneity in gap ( ʃ B y.dl on straight line wr.t. centre) [%] ± 1.2unknown Pulse length [ms]2 (full wave)3.2 (half sine) Max. induced voltage on magnet terminals when injection bumper is pulsed [mV] 30n.a. Average duty cycle [s]1.2 ppm possibleyesno

4. Conventional eddy current septum LIU-ABT review 20/11/2015 Status PS injection septa4

5. Injection septum features LIU-ABT review 20/11/2015 Status PS injection septa5 SMH42 ∫B y dl homogeneity Uses flattened full sine excitation current → less sensitive to timing jitter. Uses soft steel end plates to reduce leak field and improve field homogeneity. Will use copper coated mu- metal beam screen to reduce leak field.

6. Defined SMH42 Position in lattice Magnet aperture Range of displacement system Current precision and stability Field homogeneity Beam emittance blow up, losses at injection Beam impedance measures: copper coated mu-metal beam screen adjacent to septum Space Reservation Request LIU-ABT review 20/11/2015 Status PS injection septa6

7. Outstanding SMH42 LIU-ABT review 20/11/2015 Status PS injection septa7 Engineering specification ECR Prototype would be useful to benchmark simulations with high precision.

8. Outline Injection septum SMH42 Injection bumper Resources Conclusion LIU-ABT review 20/11/2015 Status PS injection septa8

9. Injection bumper septum BSW42 2 GeV systemPresent 1.4 GeV Physical length [mm]350220 Magnetic length [mm]322192 Septum thickness [mm]5>6 Magnet gap height between poles [mm]7090 Magnet gap width between conductors [mm]145218 Nominal deflection angle [mrad]13 Bgap [T]0.375 Integrated nominal field strength [T.m]0.1210.127 Field homogeneity in gap w.r.t angular deflection in H [%]± 0.8 Peak current for nominal deflection [kA]20.94.5 Pulse width, half sine [ms]1.01.6 Max. induced voltage on magnet terminals when injection septum is pulsed [mV] 230n.a. Average duty cycle [s]1.2 ppm possibleyes LIU-ABT review 20/11/2015 Status PS injection septa9 ‘Direct drive like’ eddy current device proposed, using soft steel endplates to improve field homogeneity significantly

10. Field Quality Injection bumper septum Magnet very short w.r.t. aperture: poor field homogeneity due to end fields. Field homogeneity improved by introducing ‘direct drive like’ geometry and additional soft steel field clamps. LIU-ABT review 20/11/2015 Status PS injection septa10

11. ‘Direct drive like’ eddy current septum LIU-ABT review 20/11/2015 Status PS injection septa11

12. Magnetic undershoot of field With half sine pulse, magnetic field shows in simulations post pulse ripple (undershoot). Presently not confirmed as yet by measurements on prototype. Mitigation to be found. LIU-ABT review 20/11/2015 Status PS injection septa12

13. Defined Injection bumper BSW42 Current tracking precision and stability. Based on MD measurements with timing variations between -+20 us. Based on jitter measurements on existing equipment. Field homogeneity. Effect of higher harmonics of bumper simulated, but negligible contribution to emittance blow up. No beam screen insert in magnet gap. LIU-ABT review 20/11/2015 Status PS injection septa13

14. Outstanding BSW42 Cross talk between magnets. First values appear counter intuitive: 30 mV induced on septum, 230 mV on bumper. Magnetic post pulse ripple mitigation. Power convertor characteristics to be finalised. Engineering specification (combined with injection septum). LIU-ABT review 20/11/2015 Status PS injection septa14

15. Mechanical concept design LIU-ABT review 20/11/2015 Status PS injection septa15 Coil fixation and copper box insulation defined. Remote displacement system planned to be recovered from existing system. EN/MME ‘bureau d’etude’ started. Space Reservation Request submitted.  Vacuum equipment still tbd.

16. Outline Injection septum SMH42 Injection bumper Resources Conclusion LIU-ABT review 20/11/2015 Status PS injection septa16

17. Planning Injection septa Functional spec frozen by Christmas 2015 ECR Q2 2016 Mechanical concept finalised 2015 Mechanical design finished Q1 2016 Bumper prototype to be built Q1 2016 Part procurement as from Q3 2016 Assembly and testing 2017 LIU-ABT review 20/11/2015 Status PS injection septa17

18. Year 20152016201720182019 PV 188485183030 EV 00000 AC 190000 Metrics per year in kCHF Cumulative metrics per year in kCHF PI.SMH42 & PI.BSW42 magnets Year 20152016201720182019 PV 188673856 886 EV 0 AC 19

19. Human resources Zsolt leaving 31/1/2015, will depend on Miro and Bruno for calculations. Mike and Jan available to follow up start of project in 2016. No technicians available in 2016 once part procurement is to start. EN/MME started in November on mechanical design based on Mike’s conceptual design APT data obsolete. LIU-ABT review 20/11/2015 Status PS injection septa19

20. Outline Injection septum SMH42 Injection bumper Resources Conclusion LIU-ABT review 20/11/2015 Status PS injection septa20

21. Conclusion Requirements quasi defined. Concept design well under way. Need for prototype bumper magnet demonstrated by Bruno measuring existing eddy current device. Human resources to be clarified. LIU-ABT review 20/11/2015 Status PS injection septa21

22. Documentation PS Injection Septa and Bumper  Functional spec: (edms 1477011), In work 1477011  SRR: sent for approval ((edms 1551627)edms 1551627  Engineering spec: to be done  ECR: to be done PS Ring MU41 and MU42 Vacuum Chambers  Functional specification: (edms 1504265), released Functional specification: (edms 1504265)  ECR (TE/VSC): (edms 1525018) engineering checkedms 1525018 LIU-PS meeting 20/10/2015 Status injection equipment22