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Working Group 4 - High Power Proton Accelerators: Achievements and Plans for Second PASI Workshop

Working Group 4 - High Power Proton Accelerators: Achievements and Plans for Second PASI Workshop. John Thomason & Steve Holmes UK-US Proton Accelerators for Science and Innovation Workshop April 3-5, 2013. Working Group Goals (reminder from 2012 Workshop ). Definitions :

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Working Group 4 - High Power Proton Accelerators: Achievements and Plans for Second PASI Workshop

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  1. Working Group 4 - High Power Proton Accelerators:Achievements and Plans for Second PASI Workshop John Thomason & Steve Holmes UK-US Proton Accelerators for Science and Innovation Workshop April 3-5, 2013 US-UK Workshop, Jan 12-14, 2012

  2. Working Group Goals (reminder from 2012 Workshop) • Definitions: • High power = >1 MW beam power • Proton accelerator = • Ion sources (p, H-) • Accelerators (linac, synchrotron, FFAG, storage ring) • Goals/deliverables: • Familiarize participants with activities and future plans for high power proton accelerators in the US and UK • Explore opportunities for collaboration/cooperation/ coordination • Deliverable = list of such opportunities for follow up US-UK Workshop, Jan 12-14, 2012

  3. Working Group Goals (reminder from 2012 Workshop) • Oriented around facilities and technologies: • Operational experience at existing facilities • Test/demonstration facilities in the planning stage • Ion source development activities • Novel approaches to high intensity acceleration • Supporting technologies • Future high power facilities in the development stage • Simulations in support of the above • Participants: Dan Bollinger, Dan Faircloth, Bob Kephart, • Alan Letchford, Shinji Machida, Sergei Nagaitsev, Mike Plum, • Jürgen Pozimski, Vladimir Shiltsev, Alexander Valishev US-UK Workshop, Jan 12-14, 2012

  4. Deliverables (1) • SNS, Project X, and ISIS to establish points of contact, and share reliability model input information as requested • FNAL and ISIS contacts established • ISIS and Project X teams to retain communication on chopper deflector and absorber designs • Alan Letchford attended PXIE meeting and discussed relevant issues • Fermilabto consider participation in space-charge neutralization experiments at FETS • Contacts established and maintained • Ongoing discussion of possible FNAL participation • Jürgen Pozimski has conducted some further experiments with FNAL kept in the loop • ISIS to provide information to Fermilab on Cs handling/ Fermilabto keep RAL informed on operation of the HINS source without Cs trapping • Cs handling procedures have been compared and details of the techniques used have been shared • Operational experience of running without a Cs trap gained on HINS source • A workshop was held at the University of Jyvaskyla after NIBS2012 entitled “Performance Variation of H- Sources”. A summary paper will be published that compares the operational performance of the FNAL and ISIS sources against the other high current H- sources around the world US-UK Workshop, Jan 12-14, 2012

  5. Deliverables (2) • JAI to consider expanded involvement in IOTA • Some discussion, but ball still in JAI’s court. IOTA is part of a larger initiative (Advanced Superconducting Test Accelerator) currently under review by DOE for FY14 funding • Fermilab to determine the operational future of HINS; and keep SNS and ISIS informed and/or engaged in planning • Christoph Gabor visited FNAL for 10 days to test FETS diagnostics on HINS • The HINS programme is being terminated so that equipment can be recycled into the PXIE facility • ISIS to consider extension of their current collaboration on SNS diagnostics • 5 members of ISIS diagnostics team visited SNS in April 2012 to discuss collaborative work within the context of PASI • Strip-line design at ISIS is ongoing and informed by SNS team: Craig Deibele will participate in commissioning • Other collaboration probable, but only have enough resource for strip-line monitor at the moment • UK to identify mechanisms for assignment of personnel within the SRF effort at Fermilab and SNS • No progress, but could be of great benefit for UK accelerator programme US-UK Workshop, Jan 12-14, 2012

  6. Deliverables (3) • UK to send ~2 attendees to the Project X Collaboration Meeting in April 2012 • Swapan Chattopadhyay is already attending these meetings, Alan Letchford will also do so, although he didn’t attend in April 2012 • UK to designate an RAL/Neutrino Factory contact for Project X • John Thomason identified • Benchmark ISIS and Project X foil codes against each other • Bryan Jones and Hayley Smith from ISIS visited FNAL in May 2012 to investigate collaboration • Delta electron cooling calculations done for ISIS 180 MeV foil have been forwarded to Igor Rakhno at FNAL • Further contact and exchange of results on Delta electron cooling calculations • Also exchange of e-mails between Dean Adams, Bryan Jones and Leonid Vorobiev regarding ORBIT development • Make a plan for measuring foil temperature distributions and compare to simulations (probably at SNS) • No progress, ball still in SNS’s court US-UK Workshop, Jan 12-14, 2012

  7. Summary of Deliverables US-UK Workshop, Jan 12-14, 2012

  8. Missing from 2012 Discussions • Opportunities at HINS • Applications of high performance computing to beam simulations • Extended discussion of beam dynamics modeling for Project X and ISIS Upgrades • In addition we felt that next year’s discussion could benefit from expanded representation from other US laboratories (depending upon the extent to which this is US–UK vsFermilab–UK) and from enhanced participation of diagnostics experts US-UK Workshop, Jan 12-14, 2012

  9. Agenda for Day 1 US-UK Workshop, Jan 12-14, 2012

  10. Agenda for Day 2 US-UK Workshop, Jan 12-14, 2012

  11. Agenda for Day 3 US-UK Workshop, Jan 12-14, 2012

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