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A noise-tolerant data communications fabric has been developed to meet the real-time data acquisition and control requirements of fast feedback loops, machine protection systems, pulse-to-pulse sequencing, and machine-experiment…

Instrumentation and Detectors · Physics 2007-05-23 E. J. Siskind

A new approach for a compact radio-frequency (RF) accelerator structure is presented. The new accelerator architecture is based on the Multiple Electrostatic Quadrupole Array Linear Accelerator (MEQALAC) structure that was first developed…

Accelerator Physics · Physics 2017-07-03 A. Persaud , Q. Ji , E. Feinberg , P. A. Seidl , W. L. Waldron , A. Lal , K. B. Vinayakumar , S. Ardanuc , D. A. Hammer , T. Schenkel

We have explored a concept for an advanced Normal-Conducting Radio-Frequency (NCRF) C-band linear accelerator (linac) structure to achieve a high gradient, high power e$^+$e$^-$ linear collider in the TeV class. This design study represents…

The low level rf (LLRF) control system for the rapid cycling synchrotron (RCS) of the Japan Proton Accelerator Research Complex (J-PARC) started its operation in 2007. The key functions of the LLRF control system are the dual harmonic auto…

Accelerator Physics · Physics 2021-06-18 Fumihiko Tamura , Yasuyuki Sugiyama , Masahito Yoshii , Masatsugu Ryoshi

This paper presents the new generation of LabVIEW-based GPS receiver testbed that is based on National Instruments' (NI) LabVIEW (LV) platform in conjunction to C/C++ dynamic link libraries (DLL) used inside the platform for performance…

Signal Processing · Electrical Eng. & Systems 2019-07-08 Erick Schmidt , David Akopian

This work presents a novel reconfigurable architecture for Low Latency Graph Neural Network (LL-GNN) designs for particle detectors, delivering unprecedented low latency performance. Incorporating FPGA-based GNNs into particle detectors…

Hardware Architecture · Computer Science 2024-01-19 Zhiqiang Que , Hongxiang Fan , Marcus Loo , He Li , Michaela Blott , Maurizio Pierini , Alexander Tapper , Wayne Luk

The project of a10MeV PET cyclotron accelerator for medical diagnosis and treatment was started at Amirkabir University of Technology in 2012. The low-level RF system of cyclotron accelerator is designed to stabilize acceleration voltage…

Accelerator Physics · Physics 2015-04-22 M. S. Sharifi Asadi Malafeh , M. Ghergherehchi , H. Afarideh , J. S. Chai

RF processing studies of 1.8-m X-band (11.4 GHz) traveling wave structures at the Next Linear Collider Test Accelerator (NLCTA) have revealed breakdown-related damage at gradients lower than expected from earlier tests with standing wave…

Accelerator Physics · Physics 2008-11-26 C. Adolphsen , W. Baumgartner , K. Jobe , F. Le Pimpec , R. Loewen , D. McCormick , M. Ross , T. Smith , J. W. Wang , T. Higo

X-band accelerator structures meeting the Next Linear Collider (NLC) design requirements have been found to suffer vacuum surface damage caused by radio frequency (RF) breakdown, when processed to high electric-field gradients. Improved…

Accelerator Physics · Physics 2009-11-10 S. E. Harvey , F. Le Pimpec , R. E. Kirby , F. Marcelja , K. Adamson , E. L. Garwin

An electron/positron linear collider with a center-of-mass energy between 0.5 and 1 TeV would be an important complement to the physics program of the LHC in the next decade. The Next Linear Collider (NLC) is being designed by a US…

Accelerator Physics · Physics 2009-11-06 T. O. Raubenheimer

The wire method is a more rapid and less costly method to measure impedances of RF components compared to methods using a beam. A setup using a single displaced wire to excite and measure transverse resonant modes in accelerating structures…

Accelerator Physics · Physics 2008-11-26 N. Baboi , G. B. Bowden , R. M. Jones , S. G. Tantawi , J. R. Lewandowski

X-band accelerator structures, meeting the Next Linear Collider (NLC) design requirements, have been found to suffer damage due to radio frequency (RF) breakdown when processed to high gradients. Improved understanding of these breakdown…

Accelerator Physics · Physics 2007-05-23 F. Le Pimpec

Superconducting rf technology (SRF) is evolving rapidly as are its applications. While there is active exploitation of what one may term the current state-of-the-practice, there is also rapid progress expanding in several dimensions the…

Accelerator Physics · Physics 2017-08-23 Charles E. Reece , Gianluigi Ciovati

High-gradient linacs of next generation require novel accelerating structures which are compact, robust and cost-effective. Dedicated research and development have been launched in the linear-collider community. This paper focuses on the…

The rapid cycling synchrotron (RCS) is part of China Spallation Neutron Source (CSNS). The RCS provides 1.6GeV protons with a repetition rate of 25Hz. The RF system in RCS is mainly composed of a ferrite loaded RF cavity, a high power…

Accelerator Physics · Physics 2014-04-11 Li Xiao , Sun Hong , Long Wei , Zhao Fa-Cheng , Zhang Chun-Lin

The PEP-II B Factory Low-Level RF System (LLRF) is a fully programmable VXI based design running under an EPICS control environment. Several RF feedback loops are used to control longitudinal coupled-bunch modes driven by the accelerating…

Accelerator Physics · Physics 2007-05-23 P. Corredoura , S. Allison , W. Ross , R. Sass , R. Tighe

The Delay Line Distribution System (DLDS) is an alternative to conventional pulse compression, which enhances the peak power of rf sources while matching the long pulse of those sources to the shorter filling time of accelerator structures.…

Accelerator Physics · Physics 2009-11-07 S. G. Tantawi , C. Nantista , N. Kroll , Z. Li , R. Miller , R. Ruth , P. Wilson , J. Neilson

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…

The recent developments in data-driven methods have paved the way to new methodologies to provide accurate state reconstruction of engineering systems; nuclear reactors represent particularly challenging applications for this task due to…

Machine Learning · Computer Science 2025-07-02 Stefano Riva , Carolina Introini , J. Nathan Kutz , Antonio Cammi

We have commissioned the digital Low Level RF (LLRF) system for storage ring RF at Advanced Light Source at Lawrence Berkeley National Lab (LBNL). The system is composed of 42 synchronous sampling channels for feedback control, diagnostics,…