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SLAC Electron Beam Test Facilities 5 MeV to 23 GeV . FACET ● ESTB ● NLCTA ● ASTA. Carsten Hast, Head Test Facilities SAREC Meeting at SLAC, July 2013. 20-23 GeV. 5 MeV. 2-16 GeV & single e -. FACET. ASTA. NLCTA. ESTB. 6 0-220 M eV. Overview.

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Slac electron beam test facilities 5 mev to 23 gev

SLAC Electron Beam Test Facilities5 MeV to 23 GeV

  • FACET ● ESTB ●NLCTA ● ASTA

Carsten Hast, Head Test Facilities

SAREC Meeting at SLAC, July 2013


20-23 GeV

5 MeV

2-16 GeV

& single e-

FACET

ASTA

NLCTA

ESTB

60-220 MeV


Overview
Overview

  • ASTA-NLCTA-ESTB-FACET span a broad spectrum of electron energyfrom 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


Facet f acility for a dvanced a c celerator e xperimental t ests
FACET Facility for Advanced Accelerator Experimental Tests

  • DoE HEP National User Facility

Linac:

Sector 10

Sector 20

Sector 0

ASTA

FACET (Sector 20):

Notch Collimator

xTCAV

Experimental Area (next slide)


Facet s experimental area
FACET’s Experimental Area

Profile measurement experiment

Sample chamber

Sample chamber

Plasma Experiment



Facet summary
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


Estb e nd s tation a t est b eam
ESTB End Station (A) Test Beam

ASTA


Estb mission and layout
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 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



Hera b e cal modules beam test for g ep 5 at j lab t 508
HERA-B e-Cal modules beam test for GEp(5) at J- Lab (T-508)

  • Principal Investigator: Ed Brash

  • Institution: 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 parameters

    • Single electrons @ 5 Hz

    • Energy: 3, 9, 12 GeV

    • Various incident angles

    • Run Times: 6/6 until 6/11

  • 3GeV Beam

    2

    3

    4

    5

    6

    = # of e- / bunch

    1


    Estb run time
    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


    Nlcta n ext l inear c ollider t est a ccelerator
    NLCTA Next Linear Collider Test Accelerator

    ASTA


    End station b and nlcta

    Laser

    L-Band

    TTF Couplers

    Marx Modulator

    Plasma Switches

    E-163 DLA

    RF Testing

    Echo-7

    XTA

    S-Band Gun

    X-Band

    NLCTA

    End Station B and NLCTA

    • Direct Laser Acceleration

    • Echo Seeding

    • High Gradient Development

    • ILC Modulator Development

    • ILC Klystron Cluster Concept

    • X-Band gun and linac development

    Klystron Cluster Concept

    Control Room



    Nlcta
    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


    Xta x band t est a ccelerator compact 6 meters injector beam line
    XTA X-Band Test AcceleratorCompact (~6 meters) Injector Beam Line


    Xta beam line
    XTA Beam Line

    Laser Injection chamber +YAG +FC

    Gun + Solenoid

    Linac

    Laser

    Compressor(IR)

    Tripler


    Asta a ccelerator s tructure t est a rea
    ASTA Accelerator Structure Test Area

    ASTA


    ASTA

    • Small bunker (10’ by 28’)

    • Maximal beam energy 50 MeV

    • 2 X-Band RF Stations

      • 50 MW each

      • Variable length pulse compressor that can produce up to 500 MW

    • 1 S-Band RF station

    • New laser

    • Very flexible infrastructure allows combination of the X- and S-Band sources

    • Quick turn around for experimental changes



    Slac electron beam test facilities summary
    SLAC Electron Beam Test Facilities Summary

    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


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