VORPAL Simulations Relevant to Coherent Electron Cooling

Conference · Tue Jul 01 00:00:00 EDT 2008

OSTI ID:956026

Bell, G I; Bruhwiler, D L; Sobol, A V; Ben-Zvi, Ilan; Litvinenko, Vladimir; Derbenev, Yaroslav

Coherent electron cooling (CEC)* combines the best features of electron cooling and stochastic cooling, via free-electron laser technology**, to offer the possibility of cooling high-energy hadron beams with order-of-magnitude shorter cooling times. Many technical difficulties must be resolved via full-scale 3D simulations, before the CEC concept can be validated experimentally. VORPAL is the ideal code for simulating the â modulatorâ and â kickerâ regions, where the electron and hadron beams will co-propagate as in a conventional electron cooling section. Unlike previous VORPAL simulations*** of electron cooling physics, where dynamical friction on the ions was the key metric, it is the details of the electron density wake driven by each ion in the modulator section that must be understood, followed by strong amplification in the FEL. We present some initial simulation results. In particular, we compare the semi-analytic binary collision model with electrostatic particle-in-cell (PIC).

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-060R23177
• OSTI ID: 956026
• Report Number(s): JLAB-ACC-08-835; DOE/OR/23177-0443
• Resource Relation: Conference: Paper compiled for EPAC2008
• Country of Publication: United States
• Language: English