Architectural considerations for recirculated and energy recovered hard XFEL drivers

Conference · Sun Jul 01 00:00:00 EDT 2018

DOI:https://doi.org/10.18429/JACoW-IPAC2018-THPMK106· OSTI ID:1471377

Benson, Stephen V. ^[1]; Douglas, David R. ^[1]; Powers, Thomas J. ^[1]; Roblin, Yves R. ^[1]; Satogata, Todd J. ^[1]; Tennant, Christopher D. ^[1]; Angal-Kalinin, D. ^[2]; Thompson, N. ^[2]; Wheelhouse, A.E. ^[2]; Williams, P.H. ^[2]; Charles, T.K. ^[3]; York, R.C. ^[4]

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1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
2. Daresbury Lab. (United Kingdom). Cockcroft Inst. of Accelerator Science and Technology (AST)
3. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
4. Michigan State Univ., East Lansing, MI (United States)

A confluence of events motivates discussion of design options for hard XFEL driver accelerators. Firstly, multiple superconducting radio-frequency (SRF) driven systems are now online (European XFEL), in construction (LCLS-II), or in design (MARIE); these provide increasing evidence of the transformational potential they offer for fundamental science with its concomitant benefits. Secondly, operation of 12 GeV CEBAF* validates use of recirculation in high energy SRF linacs. Thirdly, advances in the analysis and control of effects such as coherent synchrotron radiation (CSR) and the microbunching instability (uBI) have been recently achieved. Collectively, these developments offer insights providing extended facility science reach, reduced costs, multiplicity (i.e., support of numerous FELs operating over a range of wavelengths), and enhanced scalability and upgradability (to higher powers and energies). We will discuss the relationship amongst the various threads, and indicate how they inform design choices for the system architecture of an option for the UK-XFEL** - that of a staged multi-user X-ray FEL and nuclear physics facility based on a multi-pass recirculating SRF CW linac.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1471377
• Report Number(s): JLAB-ACP-18-2737; DOE/OR/23177-4464
• Resource Relation: Conference: IPAC 2018, 29 Apr - 04 May 2018. Vancouver, BC Canada
• Country of Publication: United States
• Language: English