Digital Low-Level RF system for the Linac Electronics Modernization Plan at LCLS

Fuente: arXiv
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Hauptverfasser: Sawai, Nashat, Cruz, Jorge Diaz, Benwell, Andy, Hoobler, Sonya, Du, Qiang, Murthy, Shreeharshini, Doolittle, Larry
Format: Preprint
Veröffentlicht: 2025
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author Sawai, Nashat
Cruz, Jorge Diaz
Benwell, Andy
Hoobler, Sonya
Du, Qiang
Murthy, Shreeharshini
Doolittle, Larry
author_facet Sawai, Nashat
Cruz, Jorge Diaz
Benwell, Andy
Hoobler, Sonya
Du, Qiang
Murthy, Shreeharshini
Doolittle, Larry
contents The LCLS began operations in 2009, utilizing SLAC's normal-conducting (NC) LINAC, which features control equipment dating back to the 1960s and 1980s. The Linac Electronics Modernization Plan (LEMP) aims to replace the legacy control equipment with a system based on the open-source Marble carrier board and Zest+ digitizer board, both of which are used in the LCLS-II HE LLRF system. Adaptation of the LLRF system developed for the continuous-wave (CW) superconducting RF (SRF) LCLS-II to the short-RF pulse NC LCLS includes leveraging the knowledge and experience gained from recent LLRF projects at SLAC and efficiently reusing the core functionality of the hardware and code base developed for previous projects, in collaboration with LBNL, FNAL and JLAB. A prototype has been deployed and tested at station 26-3, demonstrating RF generation/control, interlocks, triggers, and waveform capture. Here, we describe the hardware, firmware and software infrastructure, highlight key features, and present initial test results.
format Preprint
id arxiv_https___arxiv_org_abs_2510_11950
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Digital Low-Level RF system for the Linac Electronics Modernization Plan at LCLS
Sawai, Nashat
Cruz, Jorge Diaz
Benwell, Andy
Hoobler, Sonya
Du, Qiang
Murthy, Shreeharshini
Doolittle, Larry
Accelerator Physics
The LCLS began operations in 2009, utilizing SLAC's normal-conducting (NC) LINAC, which features control equipment dating back to the 1960s and 1980s. The Linac Electronics Modernization Plan (LEMP) aims to replace the legacy control equipment with a system based on the open-source Marble carrier board and Zest+ digitizer board, both of which are used in the LCLS-II HE LLRF system. Adaptation of the LLRF system developed for the continuous-wave (CW) superconducting RF (SRF) LCLS-II to the short-RF pulse NC LCLS includes leveraging the knowledge and experience gained from recent LLRF projects at SLAC and efficiently reusing the core functionality of the hardware and code base developed for previous projects, in collaboration with LBNL, FNAL and JLAB. A prototype has been deployed and tested at station 26-3, demonstrating RF generation/control, interlocks, triggers, and waveform capture. Here, we describe the hardware, firmware and software infrastructure, highlight key features, and present initial test results.
title Digital Low-Level RF system for the Linac Electronics Modernization Plan at LCLS
topic Accelerator Physics
url https://arxiv.org/abs/2510.11950