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!!!!!!!!