Accelerator Physics Activities and the Center for Accelerator and Instrumentation in Uppsala

1. Volker Ziemann Department of Physics and Astronomy Uppsala University Accelerator Physics Activities and theCenter for Accelerator and Instrumentation in Uppsala V. Ziemann: CAI at SFAIR meeting in Uppsala

2. V. Ziemann: CAI at SFAIR meeting in Uppsala Overview • Acclerator Physics activities at IFA-HEP • CLIC: Two-Beam Test Stand • FP6-EuroTeV, FP7-EuCARD and Norduclic • XFEL: Optical Replica and Laser Heater • ESS: RF distribution system and test stand • TIARA-PP • Center for Accelerator and Instrumentation • Scope and Agenda • Projects

3. V. Ziemann: CAI at SFAIR meeting in Uppsala CLIC related Activities • Long UU history in beam instrumentation in CLIC • 2004 call by CERN DG for participation in CTF3 • Successful application to VR+KAW for the design and construction of the TBTS • Spawned FP6-EuroTeV participation and later FP7-EuCARD • Coordinated approach within Scandinavian groups involved in CLIC/CTF3 led to formation of the NorduCLIC consortium

4. V. Ziemann: CAI at SFAIR meeting in Uppsala Two-beam Test-stand in CTF3 TBTS crew: Tord Ekelöf Roger Ruber Volker Ziemann Andrea Palaia Tomoko Muranaka Tobias Blom Marek Jacewicz Experimental area Spectrometers and beam dumps CTF3 drive-beam CALIFES probe-beam Construction supported by theSwedish Research Council and theKnut and Alice Wallenberg Foundation

5. V. Ziemann: CAI at SFAIR meeting in Uppsala TBTS, the real thing Beams in both beam lines, PETS and ACS installed and two-beam acceleration observed in summer 2010 Pics from R. Ruber and A. Palaia

6. V. Ziemann: CAI at SFAIR meeting in Uppsala Beam-instrumentation and Post-collision beam line • Long involvement in beam instrumentation • Bunch combination monitor (A. Ferrari, A. Rydberg) • Confocal resonator monitor (FP6, AF + AR + VZ) • FP6-EuroTeV project on the conceptual design of the multi-TeV post-collision line (A. Ferrari, VZ) • Safely dispose 14 MW beam power when in collision (large energy spread) or not (small beam on dump)

7. V. Ziemann: CAI at SFAIR meeting in Uppsala FP7-EuCARD: TBTS Upgrade and breakdown experiments inside SEM • Length of CLIC • Achievable acc. gradient • Surface fields > 200 MV/m • Discharges • Look at it where it happens in-situ in a scanning electron microscope • Complement molecular dynamics simulation done in Helsinki (also FP7-EuCARD) GBC=TE

8. V. Ziemann: CAI at SFAIR meeting in Uppsala NorduCLIC • Joint venture of Scandinavian groups working on CLIC/CTF3 • Helsinki (F), Oslo (N), Uppsala (S), Aarhus (D) • Original research program: Design (N), build (F) and test (S) acceleration structures for the new 12 GHz stand-alone test-stand at CERN • Successful applications in F and S • Recent expansion through accession of D • Probably machine-detector interface • Steinar Stapnes will be new head of CLIC

9. V. Ziemann: CAI at SFAIR meeting in Uppsala XFEL related activities • Following the withdrawal of funding for CELSIUS and CRYRING the university heads of UU+SU+KTH sponsored the creation of a joint center for research in Free-electron laser related issues (2005, 3x3x1.5 MSeK) • Three projects following workshop in Kista (Nov 2004) • Precision fiducialization for special magnets • Surface physics in small beam pipes (short bunches and resistive wakes) • Optical Replica Synthesizer to measure ultra-short electron bunches in FLASH • Spin-off: XFEL laser heater as Swedish in-kind contri-bution to the constrution of the EuXFEL

10. V. Ziemann: CAI at SFAIR meeting in Uppsala Optical Replica Synthesizer • Problem: measure ultra-short bunches in the 10s of fs range: EOS, TEO, LOLA, ORS • too fast for electronics (10 Gs/s, 100 ps) • but laser folks know (autocorrelation, FROG) • Solution: make an optical copy of the electron bunch and analyze that with laser methods.

11. V. Ziemann: CAI at SFAIR meeting in Uppsala OTR on camera while 200 fs laserpulse passes through electron bunch

12. V. Ziemann: CAI at SFAIR meeting in Uppsala ...finally: Single-shot FROGs • ORS is rebuilt into the SFLASH beam line • G. Angelova received fo-ass to work on electron-laser interaction • New postdoc from UniDo • Show goes on • Need to make it into standard operation device

13. V. Ziemann: CAI at SFAIR meeting in Uppsala XFEL Laser Heater • Electrons are born very cold (3 keV) • susceptible to plasma oscillation instabilities • Add Landau damping (decoherence) in a well controlled way • Laser Heater • Swedish in-kind contribution Just hiring...

14. V. Ziemann: CAI at SFAIR meeting in Uppsala ESS and Uppsala • European (5 MW Neutron) Spallation Source will be built in Lund • Finance volume: ~15 GSeK, 1 GSeK/y • 3-4 y design + 5 y construction (+ 5 y) • First beams ~2019, Last beams ~2066 • How can we attract a part of the development work to Uppsala? • ESS (ML) suggested that we take responsibility for the radio-frequency distribution system of the ESS • Local: T. Ekelöf, R. Ruber, V. Ziemann • LOI from UU rektor Anders Hallberg to ESS (July 2009)

15. V. Ziemann: CAI at SFAIR meeting in Uppsala ESS RF distribution system • About 200 s.c. acceleration cavities (352 + 704 Mhz) • Modulators • Klystrons • LLRF system • Efficiency • Test stand

16. V. Ziemann: CAI at SFAIR meeting in Uppsala LHe refrigerator (140 l/h) [KAW] 2 cavities in horizontal cryostat 6 MW pulse modulator 3 MW klystron FREIA: Uppsala RF-teststand • 4 years development phase • Volume 194 MSeK (1.5%) • ~20 positions + hardware • 2011-2012: buildup, design update and TDR writing • 2013-2014: R&D, Two cavities/klystron concept, testing components, system integration • 2015-beyond: components testing energy efficiency • Towards an UU FEL

17. V. Ziemann: CAI at SFAIR meeting in Uppsala

18. V. Ziemann: CAI at SFAIR meeting in Uppsala TIARA-PP • Test Infrastructure and Accelerator Research Area • Objective: Integration of national and international accelerator R&D infrastructures into a single distributed European R&D facility. • Member institutes: CEA, CERN, DESY, GSI,..., UU • Roy Aleksan, CEA; Uppsala representative: T. Ekelöf • Uppsala University representing Scandinavian partners • Preparatory phase: • Inventory of infrastructures, common programs, education • 4 RTD: small beams, muon cooling, SPARC, cryostat

19. V. Ziemann: CAI at SFAIR meeting in Uppsala CAI, the Center for Accelerator and Instrumentation Development • Cutting edge science at large multi-national facilities • CERN for high-energy physics • ESRF, ALS, MAX for synchrotron radiation sciences • Observatories in Spain and Chile for astronomy • This trend continues in the future • XFEL, FAIR, ESO/ESA, ESS, Max4 • In-kind contributions for construction and operation for the facility itself and its instrumentation • Accelerator or reactor • Instrumentation: detector or beam-line (photons or neutrons) • Need a strong home base as platform to launch strong participation in international collaborations

20. V. Ziemann: CAI at SFAIR meeting in Uppsala CAI: Mission • Platform to participate in multi-national research infrastructure facilities • Increase collaboration among participating groups • Advanced scattering for materials science (#) • neutrons (ILL, ESS) • photons (ESRF, MaxLab) • RF-breakdown studies for CLIC • Accelerator physics • Material science • Pellet target for PANDA at HESR@FAIR

21. V. Ziemann: CAI at SFAIR meeting in Uppsala CAI, the startup phase • In 2007 CAI was established (B. Hjörvarsson, chair and T. Ekelöf co-chair, VZ, director) • In the KOF07 evaluation the need for the functionality of CAI was clearly identified... • ...and resulted in the funding of positions for two mechanical engineers (CAD design) from the rektor's strategic funds • Close relation to the Ångström workshop. • We work on a wide portfolio of projects, both in-house and externally.

22. V. Ziemann: CAI at SFAIR meeting in Uppsala Piezo-driven microstage inside electron-microscope Some CAI projects • Pellet tracking system for PANDA

23. V. Ziemann: CAI at SFAIR meeting in Uppsala Scattering chamber for LCLS Some CAI projects, cont'd • Sample transfer unit for MAXlab Use 3D printer for prototyping and even manufacture of devices

24. V. Ziemann: CAI at SFAIR meeting in Uppsala Probe station to investigate gas-eous samples under microscope Some CAI projects, cont'd • OTR station and filterwheel for TBTS

25. V. Ziemann: CAI at SFAIR meeting in Uppsala Aerosol (Virus) injector for FLASH and LCLS Some CAI projects, cont'd • Power and water connection system for MAX4 magnets

26. V. Ziemann: CAI at SFAIR meeting in Uppsala Conclusion • Within the IFA department of the TekNat faculty we are • participating in exciting international accelerator collaborations • CLIC/CTF3 • FLASH and EuXFEL • ESS (in the future) • and, at the same time, create a home-base to contribute design capacity through CAI.