Department of Applied Physics

Description

Lasers and Accelerators

Accelerator Physics, beam instrumentation, RF technology, high speed circuits, signal processing systems and laboratory measurement techniques. Dynamics of particle beams, control of unstable systems via feedback techniques. Our group has an interdisciplinary mix of skills in accelerator physics and the dynamics of charged particle beams, as well as the technology skills to develop GHz bandwidth signal processing and beam instrumentation systems, RF systems for particle acceleration. Research activities center on studies of electron-cloud and impedance-driven beam instabilities in the SPS and LHC machine at CERN. Efforts center on accelerator dynamics measurements and numeric simulation techniques, with the goal of constructing a 4 - 8 GS/sec. feedback system to stabilize beams for high-current LHC operation. Research activity in technology of RF and LLRF techniques for beam acceleration and modification of beam dynamics via RF feedback techniques in accelerating systems.

Courses Taught

• Laboratory Electronics
• Energy Options for the 21st Century

Selected Publications

• Analysis of longitudinal beam dynamics behavior and rf system operative limits at high-beam currents in storage rings
• Modeling and Simulation of Longitudinal Dynamics for Low Energy Ring – High Energy Ring at the Positron-Electron Project
• Suppression of longitudinal coupled-bunch instabilities at the KEK-PF
• Commissioning of the iGp Feedback System at DAFNE
• Simulation of E-cloud Driven Instability and its Attenuation Using a Feedback System in the CERN SPS
• Commissioning of the LHC Low Level RF System Remote Configuration Tools
• SPS Ecloud Instabilities—Analysis of machine studies and implications for Ecloud Feedback
• Lessons learned from positron-electron project low level rf and longitudinal feedback
• RF system models for the CERN Large Hadron Collider with application to longitudinal dynamics