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FACET-IIFacility for Advanced Accelerator Experimental Tests

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  • Beam Parameters
  • Experiment Laser
  • Two-Bunch Production
  • Lattices, Maps & Drawings
  • User Area Diagnostics
  • Cherenkov Spectrometer
  • X-Ray Spectrometer
  • X-band Transverse Deflecting Cavity
  • OTR Screens
  • Beam Diagnostic Paper
  • Experimenter VME Crate

Beam Parameters

FACET-II was commissioned 2020 - 2021. The first full year of User programs with 10 GeV compressed electron beams is began in the fall of 2021 and ran until August 2022.

 

Electron Beam 
Beam Typee-
Beam energy (GeV)10
Repetition Rate (Hz)
(range)
10
1-30
Bunch Charge (nC)
(range)
2
0.5-3
Bunch Length (σ, µm)
(range)
20
1-100
Beam Spot size (σ, µm)
(range)
30
5-200

Facility staff can work with users to develop beam configurations that match their needs.

Three configurations are currently planned, designed to serve the priority experiments at FACET-II.

1. Single Bunch, high Ipk: Ipk 50-300kA , β* x,y=0.1-1m

2. 2-bunch: 1.5/0.5 nC, 30/15 | 20/10 kA, dz=150 μm, β* x,y=5-50cm

3. Single Bunch, high E, low δE, low aberrations: E=13GeV, σz=100μm, β* x,y=10m

A presentation at the 2019 Science Workshop provides more information.

The first configuration (single bunch, high I peak) will be developed in the fall of 2021 for experiment time in 2022. The second configuration (2-bunch) will be developed subsequently for experiment time later in 2022.
 

FACET-II | Facility for Advanced Accelerator Experimental Tests
2575 Sand Hill Road MS103
Menlo Park, CA 94025
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