Accelerator Physics Activities and the Center for Accelerator

Accelerator Physics Activities and the Center for Accelerator and Instrumentation in Uppsala Volker Ziemann Department of Physics and Astronomy Uppsala University 101115 V. Ziemann: CAI at SFAIR meeting in Uppsala

Overview Acclerator Physics activities at IFA-HEP CLIC: Two-Beam Test Stand FP 6 -Euro. Te. V, FP 7 -Eu. CARD and Norduclic XFEL: Optical Replica and Laser Heater ESS: RF distribution system and test stand TIARA-PP Center for Accelerator and Instrumentation 101115 Scope and Agenda Projects 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 CTF 3 Successful application to VR+KAW for the design and construction of the TBTS Spawned FP 6 -Euro. Te. V participation and later FP 7 -Eu. CARD Coordinated approach within Scandinavian groups involved in CLIC/CTF 3 led to formation of the Nordu. CLIC consortium 101115 V. Ziemann: CAI at SFAIR meeting in Uppsala

Two-beam Test-stand in CTF 3 TBTS crew: Tord Ekelöf Roger Ruber Volker Ziemann Andrea Palaia Tomoko Muranaka Tobias Blom Marek Jacewicz Spectrometers and beam dumps Experimental area CT F 3 driv e-b eam CA LIF E Sp rob e-b ea 101115 m Construction supported by the Swedish Research Council and the Knut and Alice Wallenberg Foundation 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 101115 V. Ziemann: CAI at SFAIR meeting in Uppsala Pics from R. Ruber and A. Palaia

Beam-instrumentation and Post -collision beam line Long involvement in beam instrumentation Bunch combination monitor (A. Ferrari, A. Rydberg) Confocal resonator monitor (FP 6, AF + AR + VZ) FP 6 -Euro. Te. V project on the conceptual design of the multi-Te. V post-collision line (A. Ferrari, VZ) 101115 Safely dispose 14 MW beam power when in collision (large energy spread) or not (small beam on dump) V. Ziemann: CAI at SFAIR meeting in Uppsala

FP 7 -Eu. CARD: 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 101115 GBC=TE dynamics V. Ziemann: CAI at SFAIR meeting in Uppsala

Nordu. CLIC Joint venture of Scandinavian groups working on CLIC/CTF 3 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 101115 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, 3 x 3 x 1. 5 MSe. K) 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 V. Ziemann: CAI at SFAIR meeting in Spin-off: XFEL laser heater as Swedish in-kind contri. Uppsala bution to the constrution of the Eu. XFEL 101115

Optical Replica Synthesizer Problem: measure ultra-short bunches in the 10 s of fs range: EOS, TEO, LOLA, ORS 101115 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. V. Ziemann: CAI at SFAIR meeting in Uppsala

OTR on camera while 200 fs laserpulse passes through electron bunch 101115 V. Ziemann: CAI at SFAIR meeting in Uppsala

. . . finally: Single-shot FROGs 101115 V. Ziemann: CAI at SFAIR meeting in Uppsala ORS is rebuilt into the SFLASH beam line G. Angelova received fo-ass to work on electronlaser interaction New postdoc from Uni. Do Show goes on Need to make it into standard operation device

XFEL Laser Heater Electrons are born very cold (3 ke. V) Add Landau damping (decoherence) in a well controlled way susceptible to plasma oscillation instabilities Laser Heater Swedish in-kind contribution 101115 V. Ziemann: CAI at SFAIR meeting in Uppsala Just hiring. . .

ESS and Uppsala European (5 MW Neutron) Spallation Source will be built in Lund Finance volume: ~15 GSe. K, 1 GSe. K/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 101115 V. Ziemann: CAI at SFAIR meeting in ESS (July 2009) Uppsala

ESS RF distribution system About 200 s. c. acceleration cavities (352 + 704 Mhz) Modulators Klystrons LLRF system Efficiency Test stand 101115 V. Ziemann: CAI at SFAIR meeting in Uppsala

FREIA: Uppsala RF-teststand Volume 194 MSe. K (1. 5%) ~20 positions + hardware LHe refrigerator (140 l/h) [KAW] 2 cavities in horizontal cryostat 6 MW pulse modulator 3 MW klystron 101115 4 years development phase 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 V. Ziemann: CAI at SFAIR meeting in Uppsala Towards an UU FEL

101115 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 101115 V. Ziemann: CAI at SFAIR meeting in Preparatory phase: 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, Max 4 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 101115 participation in international V. Ziemann: CAI at SFAIR meeting in collaborations Uppsala

CAI: Mission 101115 Platform to participate in multinational research infrastructure facilities Increase collaboration among participating groups Advanced scattering for materials science (#) neutrons (ILL, ESS) photons (ESRF, Max. Lab) RF-breakdown studies for CLIC Accelerator physics Material science Pellet target for PANDA at HESR@FAIR 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 KOF 07 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 inhouse and externally. 101115 V. Ziemann: CAI at SFAIR meeting in Uppsala

Some CAI projects Pellet tracking system for PANDA 101115 Piezo-driven microstage inside electron-microscope V. Ziemann: CAI at SFAIR meeting in Uppsala

Some CAI projects, cont'd Sample transfer unit for MAXlab Scattering chamber for LCLS Use 3 D printer for prototyping and even manufacture of devices 101115 V. Ziemann: CAI at SFAIR meeting in Uppsala

Some CAI projects, cont'd OTR station and filterwheel for TBTS 101115 Probe station to investigate gaseous samples under microscope V. Ziemann: CAI at SFAIR meeting in Uppsala

Some CAI projects, cont'd Aerosol (Virus) injector for FLASH and LCLS 101115 Power and water connection system for MAX 4 magnets V. Ziemann: CAI at SFAIR meeting in Uppsala

Conclusion Within the IFA department of the Tek. Nat faculty we are participating in exciting international accelerator collaborations CLIC/CTF 3 FLASH and Eu. XFEL ESS (in the future) and, at the same time, create a home-base to contribute design capacity through CAI. 101115 V. Ziemann: CAI at SFAIR meeting in Uppsala