SLAC Electron Beam Test Facilities5 MeV to 23 GeV

Carsten Hast, Head Test FacilitiesSAREC Meeting at SLAC, July 2013

FACET ● ESTB ● NLCTA ● ASTA

ESTBNLCTAFACET ASTA

20-23 GeV 2-16 GeV& single e-

5 MeV

60-220 MeV

Overview

• ASTA-NLCTA-ESTB-FACET span a broad spectrum of electron energy from a few MeV to 23 GeV

• Together they allow a broad spectrum of research opportunities

• User, technical and scientific support is via the FACET and Test Facilities Division which allows a one stop shopping for User needs

• Formal proposal review processes are in place for FACET and ESTB, for the others we are developing them

• SLAC’s goal is to operate all beam lines as user facilities

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FACET Facility for Advanced Accelerator Experimental Tests

Sector 0 Sector 10 Sector 20Linac:

FACET (Sector 20):

Experimental Area (next slide)

Notch Collimator

xTCAV

• DoE HEP National User Facility

ASTA

5

FACET’s Experimental Area

Sample chamber

Plasma Experiment

Sample chamber

Profile measurement experiment

6

New 10 TW FACET Ionization Laser

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FACET Summary

• FACET just finished a very successful User run• New features are working and more are coming

- Notch collimator to generate two bunches- New 10TW Laser to pre-ionize plasma is working

• Laser can be used for other experiments as well- We started to resurrect the whole complex of positron generation, and will

be commissioning it during FY2014- Designs for a THz transport line are in place to take THz up to the laser

room• Next FACET run starts fall 2013

• During FACET down times and when the laser is not needed we are sharing it with our SLAC colleagues who are studying materials under extreme conditions

8

ESTB End Station (A) Test Beam

ASTA

ESTB Mission and Layout

ESTB is a unique Test Beam resource• World’s only high-energy primary electron beam for large

scale Linear Collider MDI and beam instrumentation studies

• Exceptionally clean and well-defined primary and secondary electron beams for detector development

• Will serve a broad User community

Pulsed magnets in beam switch yard to send LCLS beam to ESA

LCLS and ESTB Beams

LCLS beam• Energy: 2.2 –16.0 GeV• Repetition rate: 120Hz• Beam charge: 20 to 250 pC (150pC typically)• Beam availability > 95%!

ESTB beam• Kick the LCLS beam into ESA @ 5 Hz

- Potential for higher rates when LCLS doesn’t need full rate• Primary beam 2.2 -16.0 GeV

- Determined by LCLS- <1.5 x 109 e-/pulse (250 pC)

• Clean secondary electrons- 2 GeV to 15 GeV, 1 e-/pulse to 109 e-/pulse

Experimental Areas in End Station A

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Beam

Beam Dump

HERA-B e-Cal modules beam test for GEp(5) at J- Lab (T-508)

Principal Investigator: Ed BrashInstitution: Christopher Newport University / J-Lab (5 Users)

Physics goal: Measure the ratio of the proton elastic form factors GEp/GMp

Calibration of 9 “Shashlik” style lead/scintillating fiber calorimeter modules from Hera-B

Beam parametersSingle electrons @ 5 HzEnergy: 3, 9, 12 GeVVarious incident angles

Run Times: 6/6 until 6/11 1 2 3 4 5 6 = # of e- / bunch

3GeV Beam

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ESTB Run Time

• Finishing the 1st ESTB User Run next week • 6 weeks of operation between June and now

• ESTB schedule is tied to the LCLS operation schedule• ESTB startup mid October• Winter break December 21 to January 15• Operation until early August 2014• October 2014 to March 2015 (excluding winter break)• October 2015 beam on again

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NLCTA Next Linear Collider Test Accelerator

ASTA

End Station B and NLCTA

NLCTA

TTF CouplersMarx Modulator

X-Band

Plasma Switches

L-Band Laser

E-163 DLA

S-Band Gun

Echo-7RF Testing

XTA

Klystron Cluster Concept

Control Room

Direct Laser Acceleration Echo Seeding High Gradient Development

ILC Modulator Development ILC Klystron Cluster Concept X-Band gun and linac development

16

NLCTA Overview

NLCTA

45m long bunker for e-beams and RF processing 4 X-band RF stations capable of > 100 MW each Beam energy 60 - 120 MeV (going to 220 MeV in 2014) Bunch charge 10 pC - 1 nC Bunch length 0.5 psec xy-emittance 1 to few microns Momentum resolution dp/p ≤ 10-4 X-Band transverse cavities for bunch length measurements LCLS 1st generation style S-band injector Multiple laser systems for E-163, Echo, and XTA

» GW-class Ti:Sapphire system (800nm, 2.5 mJ, 1ps)• BBO/BBO tripler for photocathode (266nm, 0.25 mJ)• 100 MW-class OPA (1200-3000 nm, 80-20 mJ)• 5 MW-class DFG-OPA (3000-10,000 nm, 1-3 mJ)

» 100 GW-class Ti:Sapphire system (800nm, 4 mJ, 30fs)» Active and passive stabilization techniques

Rich beam diagnostics and experimental infrastructure

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XTA X-Band Test Accelerator

Compact (~6 meters) Injector Beam Line

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20

XTA Beam Line

Gun + Solenoid LinacLaser Injection chamber +YAG +FC

Laser Compressor(IR)Tripler

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ASTA Accelerator Structure Test Area

ASTA

ASTA

Small bunker (10’ by 28’)Maximal beam energy 50 MeV2 X-Band RF Stations

• 50 MW each• Variable length pulse compressor that

can produce up to 500 MW1 S-Band RF stationNew laser Very flexible infrastructure allows combination of the X- and S-Band sourcesQuick turn around for experimental changes

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ASTA Schedule

                     

ASTA Operations 2013

                   

June July August September October     November December  Sat 1                                        Sun 2               Sun 1               Sun 1    

Mon 3 cryo/Laser Mon 1 cryo/Laser/Cath FC mv       Mon 2 SLAC Holiday             Mon 2 cern/LCLS II GUN  

Tue 4 cryo/Laser Tue 2 cryo/Laser/Cath FC mv       Tue 3 cryo/Cath Tue 1 cern/Laser/CsBr       Tue 3 cern/LCLS II GUN  

Wed 5 cryo/Laser Wed 3 cryo/Laser/Cath FC mv       Wed 4 cryo/Cath Wed 2 cern/Laser/CsBr       Wed 4 cern/LCLS II GUN  

Thur 6 cryo/Laser Thur 4 SLAC Holiday Thur 1 cryo/Cath Thur 5 cryo/Cath Thur 3 cern/Laser/CsBr       Thur 5 cern/LCLS II GUN  Fri 7 cryo/Laser Fri 5 cryo/Laser/Cath FC bake Fri 2 cryo/Cath Fri 6 cryo/Cath Fri 4 cern/Laser/CsBr Fri 1 LCLS II GUN inst/Laser Fri 6 cern/LCLS II GUN ASTA ClosedSat 8   Sat 6   Sat 3   Sat 7   Sat 5   Sat 2   Sat 7    Sun 9   Sun 7   Sun 4   Sun 8   Sun 6   Sun 3   Sun 8   Operations

Mon 10cryo/Laser

Mon 8cryo/Laser/Cath FC bake

Mon 5cryo/Cath

Mon 9cryo/Cath

Mon 7cern/Laser/CsBr

Mon 4LCLS II GUN inst/Laser

Mon 9cern/LCLS II GUN PPS Certification

Tue 11 cryo/Laser Tue 9 cryo/Laser/Cath FC bake Tue 6 cryo/Cath Tue 10 cryo/Cath Tue 8 cern/Laser/CsBr Tue 5 LCLS II GUN inst/Laser Tue 10 cern/LCLS II GUN SLAC HolidayWed 12 cryo/Laser Wed 10 cryo/Laser/Cath FC cool dwn Wed 7 cryo/Cath Wed 11 cryo/Cath Wed 9 cern/Laser/CsBr Wed 6 LCLS II GUN inst/Laser Wed 11 cern/LCLS II GUN MaintenanceThur 13 cryo/Laser Thur 11 cryo/Laser Thur 8 cryo/Cath Thur 12 cryo/Cath Thur 10 cern/Laser/CsBr Thur 7 LCLS II GUN inst/Laser Thur 12 cern/LCLS II GUN WeekendFri 14 cryo/Laser Fri 12 cryo/Laser Fri 9 cryo/Cath Fri 13 cryo/Cath Fri 11 cern/Laser/CsBr Fri 8 LCLS II GUN inst/Laser Fri 13 cern/LCLS II GUN  Sat 15   Sat 13   Sat 10   Sat 14   Sat 12   Sat 9   Sat 14    Sun 16   Sun 14   Sun 11   Sun 15   Sun 13   Sun 10   Sun 15   For accessMon 17 cryo/Laser Mon 15 cryo/Cath Mon 12 cryo/Cath Mon 16 cern/Laser/CsBr gun swap Mon 14 cern/Laser/CsBr Mon 11 cern/LCLS II GUN/Laser Mon 16 cern/LCLS II GUN contact EOICTue 18 cryo/Laser Tue 16 cryo/Cath Tue 13 cryo/Cath Tue 17 cern/Laser/CsBr gun swap Tue 15 cern/Laser/CsBr Tue 12 cern/LCLS II GUN/Laser Tue 17 cern/LCLS II GUN  Wed 19 cryo/Laser Wed 17 cryo/Cath Wed 14 cryo/Cath Wed 18 cern/Laser/CsBr gun swap Wed 16 cern/Laser/CsBr Wed 13 cern/LCLS II GUN/Laser Wed 18 cern/LCLS II GUN  Thur 20 cryo/Laser Thur 18 cryo/Cath Thur 15 cryo/Cath Thur 19 cern/Laser/CsBr gun swap Thur 17 cern/Laser/CsBr Thur 14 cern/LCLS II GUN/Laser Thur 19 cern/LCLS II GUN  Fri 21 cryo/Laser Fri 19 cryo/Cath Fri 16 cryo/Cath Fri 20 cern/Laser/CsBr gun swap Fri 18 cern/Laser/CsBr Fri 15 cern/LCLS II GUN/Laser Fri 20 cern/LCLS II GUN  Sat 22   Sat 20   Sat 17   Sat 21   Sat 19   Sat 16   Sat 21 SLAC Holiday ASTA OpenSun 23   Sun 21   Sun 18   Sun 22   Sun 20   Sun 17   Sun 22 SLAC Holiday  Mon 24 cryo/Laser Mon 22 cryo/Cath Mon 19 cryo/Cath Mon 23 cern/Laser/CsBr gun swap Mon 21 cern/Laser/CsBr Mon 18 cern/LCLS II GUN Mon 23 SLAC Holiday  Tue 25 cryo/Laser Tue 23 cryo/Cath Tue 20 cryo/Cath Tue 24 cern/Laser/CsBr gun swap Tue 22 cern/Laser/CsBr Tue 19 cern/LCLS II GUN Tue 24 SLAC Holiday InstallationWed 26 cryo/Laser Wed 24 cryo/Cath Wed 21 cryo/Cath Wed 25 cern/Laser/CsBr gun swap Wed 23 cern/Laser/CsBr Wed 20 cern/LCLS II GUN Wed 25 SLAC Holiday MaintenanceThur 27 cryo/Laser Thur 25 cryo/Cath Thur 22 cryo/Cath Thur 26 cern/Laser/CsBr gun swap Thur 24 cern/Laser/CsBr Thur 21 cern/LCLS II GUN Thur 26 SLAC Holiday  Fri 28 cryo/Laser Fri 26 cryo/Cath Fri 23 cryo/Cath Fri 27 cern/Laser/CsBr gun swap Fri 25 PPS Certification Fri 22 cern/LCLS II GUN Fri 27 SLAC Holiday  Sat 29   Sat 27   Sat 24   Sat 28   Sat 26   Sat 23   Sat 28 SLAC Holiday  Sun 30   Sun 28   Sun 25   Sun 29   Sun 27   Sun 24   Sun 29 SLAC Holiday        Mon 29 cryo/Cath Mon 26 cryo/Cath Mon 30 cern/Laser/CsBr Mon 28 LCLS II GUN inst/Laser Mon 25 cern/LCLS II GUN Mon 30 SLAC Holiday        Tue 30 cryo/Cath Tue 27 cryo/Cath       Tue 29 LCLS II GUN inst/Laser Tue 26 cern/LCLS II GUN              Wed 31 cryo/Cath Wed 28 cryo/Cath       Wed 30 LCLS II GUN inst/Laser Wed 27 cern/LCLS II GUN                    Thur 29 cryo/Cath       Thur 31 LCLS II GUN inst/Laser Thur 28 SLAC Holiday                    Fri 30 cryo/Cath             Fri 29 SLAC Holiday                    Sat 31               Sat 30                                                                                                                                           

                                           

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SLAC Electron Beam Test Facilities Summary

Facility Purpose ParametersFACET Accelerator R&D,

Material Science, THzVery focused and short bunches at 23GeV e-/(e+)

ESTB Detector R&D, LC MDI, Radiation Tests

2-16GeV primary LCLS beam or single e-

NLCTA and XTA

Accelerator R&D, Medical 60 to 220MeV, small emittance, very versatile infrastructure

ASTA Gun and Kathode Development,RF Testing and RF processing

<50MeV, X- and S-Band RF power

• All supported by SLAC’s FACET and Test Facilities Division• https://portal.slac.stanford.edu/sites/ard_public/tfd/Pages/Default.aspx• http://facet.slac.stanford.edu and http://estb.slac.stanford.edu• Google: SLAC FACET or SLAC ESTB