SLAC User Facilities Carsten Hast - ARD Test Facilities Department 1
Test Facilities for HEP and Photon Science at SLACFACET ● NLCTA ● ASTA ● ESA ● ESB
ARD, December 2010
Carsten HastTest Facilities Department
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ESAESB &NLCTA
FACET ASTA
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Test Facilities Cast of Characters
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ARD Test Facilities’ Goals• High Energy Physics
– Support Research for Linear Collider• High and Ultra High Gradients• Plasma Acceleration• Direct Laser Acceleration• Machine Detector Interface Studies
– Detector Development• LC Detectors• B-Factories • others
• Photon Science– Gun Development
• New Materials• New Designs• Different Frequencies
– Novel Seeding Techniques for FELs and other FEL Fundamentals• Echo Enabled Harmonic Generation• Emittance exchange• THz Radiation• Coherent Optical Transition Radiation • etc.
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Accelerator Structure Test Area (ASTA)
Stephen will talk about that in a little while
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End Station Test Beam (ESTB) at ESA
• World’s only high-energy primary electron beam for Test Beams • Kick 13.6 GeV LCLS beam to ESA
2 - 6 x 109 e-/pulse @ 5 Hz
Kicker Magnets and other Hardware
• 4 new kicker magnets for BSY including power supplies and modulators and vacuum chambers are designed and components are being ordered
• Build new PPS system and install new beam dump
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ESA Experimental Area
Beam
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ESA Infrastructure
Available InstrumentationTrigger countersHalo veto countersHigh resolution beam hodoscopeParticle ID (Cerenkov, TOF, shower counter)Small, high field solenoidsturdy support table with remote movers
Cranes 15 and 50-ton cranes available
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18 feet
Wakefield box Wire Scanners RF BPMs
T-487: long. bunch profile
“IP BPMs” T-488
Ceramic gap for EMI studies
BPM energy spectrometer (T-474/491)Synch Stripe energy spectrometer (T-475)Collimator design, wakefields (T-480)Bunch length diagnostics (T-487)Smith-Purcell Radiation
IP BPMs—background studies (T-488)LCLS beam to ESA (T490)Linac BPM prototypesEMI (electro-magnetic interference)Irradiation Experiments
Dipoles + Wiggler
ESA Primary Beam Equipment Layout
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ESTB Detector Test Area
Beam spot: < 1mm
Enlisted Help!
• Mauro joined the ESTB team and will lead the effort to make ESA “usable” again– Need to reinstall BPMs which are on loan to Berkley– Complete the beam line– Install a dump– Improve the experimental infrastructure
– Clean Up!!!!!!!!!!!
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ESTB Status
• New BSY kicker magnets, power supply and vacuum chambers– All items are in the design and purchasing stage (based on existing hardware)– Will be installed during the down March/April 2011
• New small beam dump for ESA– Design is clear– Radiation protection calculations are ongoing– Will be installed early 2011
• New Personnel Protection System (PPS)– Design has started and implementation plan is under development– Scheduled to be done by June 2011
• There will be a User Workshop at SLAC Thursday, March 17 2011in conjunction with
2011 Linear Collider Workshop of the Americas (ALCPG11), University of Oregon in Eugene, March 19-23, 2011
First beam summer 2011
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End Station B
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ESB
NLCTA
TTF CouplersMarx Modulator
X-Band
Plasma Switches
L-Band Laser
E-163 DLA
S-Band Gun
Echo-7RF Testing
XBTA
Big Pipe
2-Pack
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Big Pipe (aka: C^2 pipe dreams)
• Remember: Chris A. describing the Klystron Cluster Concept for ILC?
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Big Pipe (on steroids…)
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End Station B
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NLCTA Plans• Improve NLCTA
– Control System, more uniform DAQ– Better beam diagnostics– Fix Phase jitter (between klystrons and lasers)– Install another RegenAmplifier in laser room for more flexibility– And many more
• Ongoing Program– Echo
• Echo 7-15• Narrow-band beatwave THz emission • Studies COTR properties and micro-bunching instabilities
– Continue E-163– Continue X-Band RF tests
• New Installations– Upgrade spectrometer– Install transverse cavities for increased slice energy spread
• Redo EEHG• Emittance Exchange with transverse cavities
• New X-Band Test Area– structure testing– X-Band gun with100 MeV linac
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X-Band Test Area
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Coherent Optical Transition Radiation
GerardAgostino
Diktys
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Coherent Optical Transition Radiation
Goal of the experiment:Reconstruct transverse distribution of micro-bunching in amplitude and phase
Far Field only
Far Field and Near Field simultaneously
Phase can be found with a phase retrieval iterative algorithm
We have invited Diktys to give a seminar about that next year
Preliminary Results
Decent signal from microbunching instability but few photons survive after bandpass filter
Unexpected Interference pattern in the far field zone
Pattern appears at two locations along NLCTA
Etalon effect in the exit vacuum window?
Near future plans:COTR imaging and ECHO experiments are compatible
More data will be gathered during ECHO runs with motorized camera lenses
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FACET Update
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FACET User Area
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FACET User Trailer
User trailer is in purchasing, had job walk this morning and are waiting for bids
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SAREC Review Process
SLAC Accelerator Research Experimental program Committee
– evaluate the merit of proposed R&D in SLAC’s experimental accelerator research facilities for advancing world-class accelerator science or accelerator technology
– evaluate the feasibility of proposed R&D in SLAC’s acc. res. facilities – review the progress of existing R&D in SLAC’s acc. res. facilities
1st Meeting: January 10th to 12th 2011
Members: Uwe Bergmann (SLAC), Gerry Dugan (Cornell), Eric Esarey (LBL), Jie Gao (IHEP),Kathy Harkay (ANL), Carsten Hast (SLAC, Scientific Secretary),
Sergei Nagaitsev (FNAL), Andrei Seryi (Chair, John Adams Institute) Vitaly Yakimenko (BNL),
Kaoru Yokoya (KEK) Frank Zimmermann (CERN)
Sarec was a Vulcan astrophysicist and elder who served as the ambassador to Earth during the 2240s and 2250s. He was married to a Human woman, Amanda Grayson, and was the father of Spock and Sybok.
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FACET Proposals Review
SAREC Agenda:
Monday 10th
Morning: Tour of FACET and ESBAfternoon: Welcome, ASTA,NLCTA and FACET status
Tuesday 11th Presentation of FACET proposals
Wednesday 12th (closed)Q/A for each proposalDiscussionBriefing of ARD management
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FACET Proposals
FACET Proposals:– Ultrafast Processes in Magnetic Solids (Durr, SLAC)– Plasma Wakefield Acceleration (Hogan, Joshi, Muggli, SOCAL)– Opical Diffraction Radiation Beam-size Monitor (Lumpkin, FNAL)– Metallic Structures Periodic Structures (Tantawi, SLAC)– Wakefield Acceleration in Dielectric Structures (Rosenzweig,
Travish, Hogan, Muggli, SOCAL)– Bunch Time Profile Measurement using Smith-Purcell Radiation
(Reichold, OXFORD)– Measurements for the CLIC Study (Schulte, CERN)– PASER (Schachter, TECHNION)– HG Dielectric Wakefield Measurments (Kanareykin, EUCLID
TECHLABS)– THz Radiation (Frisch, SLAC)
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FACET Schedule
• Construction finished in May 2011• Linac down ends May 15th • LCLS User run starts June 2nd • Bring up Sectors 0 to 20 late May• Start beam operation of S 0 to 20 and damping ring
during June• User Assisted Commissioning and Early Science July
and August 2010• FACET project will install new chicane in S10 during
September to November• CD4 review in December 2011• First User Run mid January 2012 to end of March 2012
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Summary
• We do a lot of stuffASTA
ESA
ESB
FACET User Area
NLCTA
• Plus a little bit of LCLS and ATF II
• Want to help?– NLCTA upgrades and future run plans need a
lot of ARD supportLet’s talk how YOU can help!!!!!!!!