The Workshop on Test Beam Opportunity's at SLAC's Linac to End Station A (LESA) Facility will be hosted at SLAC and will be hybrid allowing both Zoom and in-person participation. Registration is open on Indico, but the indico page is still being developed. A short introduction to the LESA facility and its test beam capabilities can be found here (preliminary version). The organizers (see email below) are happy to discuss further if you have questions.
The LESA beamline, which is currently nearing completion, will deliver low current 8 GeV electron beams from the LCLS-II-HE superconducting linac to End Station A. Commissioning is planned to begin in late 2025 and continue during the first 2 months of SC Linac beam availability in 2027. This opens an exciting opportunity for a test-beam program starting in 2027, building on the successes of the End Station Test Beam (ESTB) program. For test beam operations, attenuated beams averaging 1–few electrons per bunch will be available at 2.0-8.0 GeV energies, with a bunch spacing of up to 10 Hz (interleaved mode) or 1–37 MHz (using planned dedicated lasers at the injector, to be commissioned around 2028). In addition, bunch charges up to 100 pC at 8 GeV can be delivered at rates up to 10 Hz. All modes are expected to offer narrow beam energy spread and ps- or sub-ps-scale bunch lengths.
The workshop will feature presentations on the LESA beamline capabilities, specific test-beam opportunities, and operational experience at other test beam facilities worldwide, as well as discussions aimed at sharpening the instrumentation and support needs of the user community, e.g.:
- The short sub-ps bunch length achievable at LESA can be uniquely beneficial to provide precise timing reference for tests of fast timing detectors: one specific goal of the workshop is to better understand the precision needed on accelerator timing at the end station to support such tests.
- What instrumentation (beam telescopes etc) does the facility need to provide?
We welcome your participation at the workshop, and would also encourage you to contribute a short presentation about a potential application of the LESA test beam. If you would like to speak, please let the organizing committee know and/or submit an abstract via Indico.
Local Organizing Committee (add @slac.stanford.edu to email any of us):
- Mei Bai (mbai)
- Carsten Hast (hast)
- Tom Markiewicz (twmark)
- Tim Nelson (tknelson)
- Philip Schuster (schuster)
- Natalia Toro (ntoro)
Administrative Support
- Glenna Paige (glennap_at_slac.stanford.edu)
Program Committee
- Su Dong (SLAC)
- Maurice Garcia-Sciveres (LBL)
- John Haggerty (BNL)
- Petra Merkel (FNAL)
- Marcel Stanitzki (DESY)
