Facility Features

FACET-II Beam Parameters

FACET-II was commissioned 2020 - 2021.

The first full year of User programs with 10 GeV compressed electron beams is will begin in the fall of 2021.

 

Electron Beam
Beam Type e-
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)
10
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.