1. Jan 12, 2005G.W.Foster - Proton Driver General Meeting Proton Driver General Meeting Kick-off Presentation G. W. Foster PD General Weekly Meeting Jan 12, 2005

2. G.W.Foster - Proton Driver General Meeting OUTLINE Purpose of Weekly General Meeting Elevator Speech on Proton Driver What we’ve been up to the last year – Technical progress since 2003 Getting Plugged into Working Groups How to Educate Yourself Efficiently about the Proton Driver What’s Next

3. Jan 12, 2005G.W.Foster - Proton Driver General Meeting Weekly General Meeting Inform FNAL Staff about what is going on ~ 40% Physics ~ 60% Technology Communication between working groups http://ProtonDriver.FNAL.GOV

4. Jan 12, 2005G.W.Foster - Proton Driver General Meeting Working Groups

5. Jan 12, 2005G.W.Foster - Proton Driver General Meeting 8 GeV Superconducting Linac “New” idea incorporating concepts from both the Spallation Neutron Source, RIA, and TESLA. –Copy SNS & RIA Linac designs up to 1.3 GeV –Use “TESLA” Cryomodules from 1.3 - 8 GeV –H - Injection at 8 GeV in Main Injector ==> “Super-Beams” in Fermilab Main Injector: – 2 MW Beam power at BOTH 8 GeV and 120 GeV – Small emittances ==> Small losses in Main Injector – Minimum (1.5 sec) cycle time – MI Beam Power Independent of Beam Energy ==> (flexible neutrino program)

6. Jan 12, 2005G.W.Foster - Proton Driver General Meeting 8 GeV Superconducting Linac With X-Ray FEL, 8 GeV Neutrino & Spallation Sources, LC and Neutrino Factory ~ 700m Active Length 8 GeV Linac X-RAY FEL LAB 8 GeV neutrino Main Injector @2 MW Anti- Proton SY-120 Fixed- Target Neutrino “Super- Beams” NUMI Off- Axis & Long-Pulse Spallation Source Neutrino Target Neutrinos to “Homestake” Short Baseline Detector Array Target and Muon Cooling Channel Bunching Ring Recirculating Linac for Neutrino Factory VLHC at Fermilab Damping Rings for TESLA @ FNAL With 8 GeV e+ Preacc. 1% LC Systems Test

7. Jan 12, 2005G.W.Foster - Proton Driver General Meeting 8 GeV SC Linac Proton Driver A Bridge Program to the Linear Collider Near Term Physics Program (neutrinos+) Multiple HEP Destinations & Off-Ramps A seed project for Industrial Participation 50 cryomodules, 12 RF stations, ~1.5% of LC

8. Jan 12, 2005G.W.Foster - Proton Driver General Meeting Proton Driver Linac Parts 1.MAIN “TESLA” LINAC (1-8 GeV) ~ Exact copy of TESLA, 1.5% of LC 2.Beta<1 “Squeezed TESLA” Linac –“SNS” SCRF linac at f = 1300 MHz 3.“Pulsed RIA” Front End Linac –spoke SCRF cavities at 325 MHz 4.H- Source & RF Quad ~ Copy of JPARC 325 MHz front end

9. Jan 12, 2005G.W.Foster - Proton Driver General Meeting 0.5 MW with TESLA Frequencies & SCRF F.E.

10. Jan 12, 2005G.W.Foster - Proton Driver General Meeting Linac Technical Strategy TESLA compatible frequency chosen –Prototypes & vendors exist for 7/8 of linac –Complete overlap with LC test facility Staging Stand-Alone Linac Beam Power –Cut Klystron count from 42  12 –Preserve 2 MW beam power in MI Adopt “Pulsed RIA” SCRF front end

11. Jan 12, 2005G.W.Foster - Proton Driver General Meeting Upgrade Strategy: Add Klystrons

12. Jan 12, 2005G.W.Foster - Proton Driver General Meeting Cost Driver: Klystrons per GeV

13. Proton Driver Beams INITIALULTIMATETESLA Beam Power0.5 MW2.0 MW23 MW Beam Current8.3 mA25 mA9.5 mA Beam Pulse3 msec1 msec Rep Rate2.5 Hz10 Hz5-10 Hz Klystrons1236584 Cavities / Klystron36:112 : 136 : 1

14. Jan 12, 2005G.W.Foster - Proton Driver General Meeting 120 GeV Main Injector Cycle with 8 GeV Linac, e- and P

15. Jan 12, 2005G.W.Foster - Proton Driver General Meeting 120 GeV Main Injector Cycle with 8 GeV Synchrotron

16. Jan 12, 2005G.W.Foster - Proton Driver General Meeting Linac Allows Reduced MI Beam Energy without Compromising Beam Power MI cycles to 40 GeV at 2Hz, Retains 2 MW MI beam power # neutrino evts. ~ same vs. E Reduces tail at higher neutrino energies. Permits Flexible Neutrino Program 2MW @40 GeV NOT SPECIFIED FOR SYNCHROTRON

17. Jan 12, 2005G.W.Foster - Proton Driver General Meeting Baseline Design Only bare H- Linac or Synchrotron 0.5 MW Stand-Alone Power (& 2 MW upgrade path) Main Injector Intensity Upgrades for 2MW Reference Experimental Program -TBD

18. Jan 12, 2005G.W.Foster - Proton Driver General Meeting Main Injector Intensity Upgrade  RF: Major upgrade. Need a second power amplifier for each cavity (and 4 more cavities for synchrotoron option).  Power supply: moderate upgrade (for synchrotron option)  Magnet: OK.  Shielding & Beam Dump: OK.  Cooling capacity: OK for magnet, needs to be doubled for RF.  Gamma-t jump system: New.  Large aperture quad: New. (In Progress for Run II / NUMI)  Collimation system: New. (In Progress for Run II / NUMI?)  Passive damper and active feedback: (New..?)  Stop band correction: New.  NuMI and other 120 GeV Beamlines: Under study. http://www-bd.fnal.gov/pdriver/

19. Jan 12, 2005G.W.Foster - Proton Driver General Meeting Some Developments 1 st Round of PD Design Studies Completed 2003 PD Recommendation by FLRPC early 2004 New Design Iteration Started –Goal: CD-0 Documentation by “End of ’04” –Both Synchrotron and SCRF Linac (emphasized) ITRP Decision Adds Momentum to SCRF US SCRF Collaboration enthusiasm for PD Workshop on H- Transport & Injection gives clean bill of health to 8 GeV linac parameters Successful tests of prototype fast-Phase shifters

20. Jan 12, 2005G.W.Foster - Proton Driver General Meeting New Proton Driver Charge Letter

21. Jan 12, 2005G.W.Foster - Proton Driver General Meeting Proton Driver Charge (machine) Goal: CD-0 Documentation by End of ’04 –Target is now March ’05 Director’s Review Both Synchrotron and SCRF Linac (emphasized) –Common Performance Specs and Cost Basis External Review of Accelerator Physics Investigation of Outside Collaboration

22. Jan 12, 2005G.W.Foster - Proton Driver General Meeting PD Work in Progress … Weekly meetings in specific technical areas (four)  (six) –See http://ProtonDriver.FNAL.GOVhttp://ProtonDriver.FNAL.GOV Visits from experts, workshops Prototypes of key components Developing Collaborations

23. Jan 12, 2005G.W.Foster - Proton Driver General Meeting

24. Jan 12, 2005G.W.Foster - Proton Driver General Meeting JHF 325 MHz 3 MW Klystron JHF 325 MHz RF Quad JHF 325 MHz RFQ and Klystrons for TESLA-Compatible* Front End * TESLA frequency = 1300 MHz = 4*325 MHz

25. Jan 12, 2005G.W.Foster - Proton Driver General Meeting LANL (APT)ANL (RIA)

26. Jan 12, 2005G.W.Foster - Proton Driver General Meeting End-to-End Beam Physics of TESLA-Compatible Linac (P. Ostroumov, ANL)

27. Jan 12, 2005G.W.Foster - Proton Driver General Meeting 8 GeV Superconducting Linac TECHNICAL SUBSYSTEM DESIGNS EXIST AND WORK SNS Cavites (JLAB) FNAL/TTF Modulators “TTF Style” Cryomodules Civil Const. Based on FMI TESLA RF Distribution * w/ phase shifters

28. Jan 12, 2005G.W.Foster - Proton Driver General Meeting Advanced RF Distribution (Coaxial Phase Shifter Option) DIRECTIONAL COUPLER (POWER SPLIT) MAGIC TEE AND CAVITY RF POWER COUPLER CIRCULATOR AND LOAD COAXIAL FERRITE STUB TUNER AND WAVEGUIDE TRANSITION RF FROM KLYSTRON E / YET!

29. Jan 12, 2005G.W.Foster - Proton Driver General Meeting Fast-Ferrite Phase Shifter R&D

30. Jan 12, 2005G.W.Foster - Proton Driver General Meeting THE NEXT STEP There is a 100% overlap in the plans for the next step of the SCRF Proton Driver and the SCRF Linear Collider: Set up 1 GeV of TESLA linac – At Fermilab – With as many US-built components as possible

31. Jan 12, 2005G.W.Foster - Proton Driver General Meeting

32. Jan 12, 2005G.W.Foster - Proton Driver General Meeting FNAL Meson Area SMTF Layout Example 325 MHz TESLA-Compatible Beta <1 Linac Test Four Cryomodule System Test A0 Photoinjector & Beam Tests Connection to Meson Area Cryo Plant

33. Jan 12, 2005G.W.Foster - Proton Driver General Meeting THE NEXT NEXT STEP Demonstrate a 325 MHz TESLA-Compatibile SCRF linac For Protons and Ions – At Fermilab – With as many components from new collaborators and vendors as possible

34. Jan 12, 2005G.W.Foster - Proton Driver General Meeting 325 MHz Front-End Linac 325 MHz Klystron – Toshiba E3740A (JPARC) 115kV Pulse Transformer Modulator Capacitor / Switch / Bouncer Charging Supply RFQ MEBT SCRF Spoke Resonator Cryomodules RF Distribution Waveguide Ferrite Tuners Single Klystron Feeds SCRF Linac to E > 100 MeV

35. Jan 12, 2005G.W.Foster - Proton Driver General Meeting

36. Jan 12, 2005G.W.Foster - Proton Driver General Meeting Single Module Including: 1.Circulator / Isolator 2.Hybrid(s) & loads 3.Two Fast-Ferrite Tuners Complete resonance control for One Cavity Low power versions may fit on Single Circuit Board Fast Ferrite I/Q Modulator Concept

37. Jan 12, 2005G.W.Foster - Proton Driver General Meeting How to Educate Yourself Efficiently about the Proton Driver Read Hassan Padamsee’s Book on SCRF Technology – His FNAL lectures should be online soon Read the 2003 PD Linac Design Report Read the 1999 SNS SCRF Design Report Read the TESLA TDR Browse the links on http://ProtonDriver.FNAL.GOV  including the big pile of relevant papers linked from there

38. Jan 12, 2005G.W.Foster - Proton Driver General Meeting 2003 Design Study 125 Page Design Study Cost Estimate Spread Sheet w/ BoE http://tdserver1.fnal.gov/project/8GeVlinac

39. Jan 12, 2005G.W.Foster - Proton Driver General Meeting What’s Next (a personal view of where the Proton Driver could & should be going) Technical hurdles have been cleared: (H- stripping & fast phase shifters) Teams have been assembled in (most) key areas SMTF (Meson Area SCRF) Collabortion is functioning Ready for a positive decision