3 citations · 8 across the 11 of their papers we have counts for
11 papers
Drift Observations and Mitigation in LCLS-II RF
L. Doolittle, S. D. Murthy, A. Benwell +6
The LCLS-II RF system physically spans ~700m and has strict requirements -- on the order of 20 fs -- on the phase stability of the accelerating RF fields in its SRF linac. While ea…
The LCLS-II Gun & Buncher LLRF Controller Upgrade
Christos Bakalis, Andrew Benwell, Daron Chabot +6
LCLS-II is currently in its commissioning phase at SLAC. It is an X-ray FEL driven by a CW superconducting LINAC. The beam injector plays a crucial role in the overall performance…
Installation, Commissioning and Performance of Phase Reference Line for LCLS-II
Shreeharshini Dharanesh Murthy, Lawrence Doolittle, Charlie Xu +3
Any cavity controller for a distributed system needs a Phase Reference Line (PRL) signal from which to define phases of a cavity field measurement. The LCLS-II PRL system at SLAC p…
Analog Cavity Emulators to Support LLRF Development
Shreeharshini Dharanesh Murthy, Lawrence Doolittle, Andrew Benwell
The goal of a LLRF system is to control an actual RF cavity with beam. While digital simulations have a place, having an analog circuit to stand in for the cavity can be tremendous…
Digital Low-Level RF control system for Accumulator Ring at Advanced Light Source Upgrade Project
Qiang Du, Shreeharshini Murthy, Michael Betz +8
Currently ALS is undergoing an upgrade to ALSU to produce 100 times brighter soft X-ray light. The LLRF system for Accumulator Ring (AR) is composed of two identical LLRF stations,…
LCLS-II and HE Cryomodule Microphonics at CMTF in Fermilab*
C. Contreras-Martinez, E. Harms, C. Cravatta +7
Microphonics causes the cavity to detune. This study discusses the microphonics of sixteen 1.3 GHz cryomodules, 14 for LCLS-II and 2 for LCLS-II HE tested at CMTF. The peak detunin…