20 likes | 104 Views
Simulation, design and prototyping of an FEL for Proof-of-Principles of Coherent Electron Cooling Vladimir Litvinenko (PI), Yue Hao, Stephen Webb. Main goal – develop cooling technique to increase polarized p-p luminosity
E N D
Simulation, design and prototyping of an FEL for Proof-of-Principles of Coherent Electron Cooling Vladimir Litvinenko (PI), Yue Hao, Stephen Webb Main goal – develop cooling technique to increase polarized p-p luminosity Secondary goal – serve as cooling technique for future MeRHIC and eRHIC Generic LDRD proposal, 2 years, $415K • Salaries • Pot-doc, 50% efforts • Engineer – 1 month/year • Scientist - 1 months/year • Materials $100K • Computer, software $5K • Travel, misc $5K Ger
An FEL-based Coherent Electron Cooling [1] (CeC) promises to become a revolutionary cooling method capable of significant increase of luminosity in proton-proton colliders from RHIC to LHC. It also promises to improve significantly luminosity of proposed electron-hadron collider eRHIC at BNL. Being a completely new untested method, the CeC mechanism is proposed to be tested in a proof-of-principle at RHIC using components of existing R&D ERL added by a high-gain FEL. • The FEL is one of the main components which had to be installed onto RHIC ring, it will use existing R&D ERL components, and therefore it has a number of additional constrains: • Minimum aperture is limited by that required for RHIC injection; • Entire CeC system should fit in the space between DX magnets, i.e. it is limited in length; • Relatively low energy of electron beam (20 MeV) requires careful evaluation of space-charge and diffraction effects on FEL and CeC performance; • Undulator design and tolerances on its fields should be established. • This proposal aims established through intensive 3D FEL simulation and corresponding theoretical models FEL design satisfying the CeC PoP requirements. [1] Coherent Electron Cooling, Vladimir N. Litvinenko, Yaroslav S. Derbenev, Physical Review Letters 102, 114801 (2009)