9 papers
Low Level RF and Timing System Design for the Cool Copper Collider
Chao Liu, Ankur Dhar, Martin Breidenbach +1
The Cool Copper Collider (C3) is a linear accelerator (LINAC) concept based on compact, high gradient, and normal conducting accelerator technology to support Higgs boson studies a…
High-power Test and System Integration of Direct RF Sampling Based LLRF Control and Monitoring System for S-Band Accelerating Structures
Chao Liu, Ankur Dhar, Michael Hoganson +6
High precision Low-level RF (LLRF) control and monitoring systems for future particle accelerators will be a significant technical challenge as the requirements in performance, fle…
Development of Ultra High Power Compact X-Band Pulse Compressor
Ankur Dhar, Mohamed A. K. Othman, Valery A. Dolgashev
We demonstrate a new 11.424 GHz SLED-type RF pulse compressor for powering high-gradient X-band photoinjectors with pulse lengths around 20 ns. RF pulse compression provides a prac…
High Power RF Pulse Shaping Tests with NG-LLRF and Cool Copper Collider Prototype Structure
Chao Liu, Ankur Dhar, Ronald Agustsson +4
RF pulse modulation techniques are widely applied to shape RF pulses for various types of RF stations of particle accelerators. The amplitude and phase modulations are typically im…
Nanosecond Radio-Frequency Pulse Driven Photogun for Very Hard X-ray Free-electron Laser
Wei Hou Tan, River Robles, Juan Hernandez +2
One pathway to producing high brightness electron beams is to use a radio-frequency (rf) driven high field photogun to rapidly accelerate photoemitted electrons to the relativistic…
Next Generation LLRF Control and Monitoring System for S-Band Linear Accelerators
Chao Liu, Ankur Dhar, Emma Snively +3
The low-level RF (LLRF) systems for S-band linear accelerating structures are typically implemented with heterodyne base architectures. We have developed and characterized the next…
High Precision RF Pulse Shaping with Direct RF Sampling for Future Linear Accelerators
Chao Liu, Ankur Dhar, Ryan Herbst +1
In various of particle accelerator designs, amplitude and phase modulation methods are commonly applied to shape the RF pulses for implementing pulse compressors or compensating fo…
United States Muon Collider Community White Paper for the European Strategy for Particle Physics Update
A. Abdelhamid, D. Acosta, P. Affleck +301
This document is being submitted to the 2024-2026 European Strategy for Particle Physics Update (ESPPU) process on behalf of the US Muon Collider community, with its preparation co…
High-Power Test of a C-band Linear Accelerating Structure with an RFSoC-based LLRF System
C. Liu, L. Ruckman, R. Herbst +7
Normal conducting linear particle accelerators consist of multiple rf stations with accelerating structure cavities. Low-level rf (LLRF) systems are employed to set the phase and a…