High-brilliance, high-flux compact inverse Compton light source

Journal Article · Fri Aug 24 00:00:00 EDT 2018 · Physical Review Accelerators and Beams

DOI:https://doi.org/10.1103/PhysRevAccelBeams.21.080703· OSTI ID:1466447

Deitrick, K. E.; Krafft, G. A.; Terzić, B.; Delayen, J. R.

The Old Dominion University Compact Light Source (ODU CLS) design concept is presented—a compact Inverse Compton Light Source (ICLS) with flux and brilliance orders of magnitude beyond conventional laboratory-scale sources and greater than other compact ICLS designs. This concept utilizes the physics of inverse Compton scattering of an extremely low emittance electron beam by a laser pulse of rms length of approximately two-thirds of a picosecond ($$2/3\text{ }\text{ }\mathrm{ps}$$). The accelerator is composed of a superconducting radio frequency (SRF) reentrant gun followed by four double-spoke SRF cavities. After the linac are three quadrupole magnets to focus the electron beam to the interaction point (IP). The distance from cathode surface to IP is less than 6 m, with the cathode producing electron bunches with a bunch charge of 10 pC and a few picoseconds in length. The incident laser has 1 MW circulating power, a 1 micron wavelength, and a spot size of 3.2 microns at the IP. The repetition rate of this source is 100 MHz, in order to achieve a high flux despite the low bunch charge. The anticipated x-ray source parameters include an energy of 12 keV, with a total flux of $$2.2\times{}{10}^{13}\text{ }\text{ }\mathrm{ph}/\mathrm{s}$$, the flux into a 0.1% bandwidth of $$3.3\times{}{10}^{10}\text{ }\text{ }\mathrm{ph}/$$(s0.1%BW), and the average brilliance of $$3.4\times{10}^{14}\text{ }\text{ }\mathrm{ph}/(\mathrm{s}\text{ }{\mathrm{mm}}^{2}\text{ }{\mathrm{mrad}}^{2}\text{ }0.1%)$$%BW).

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Old Dominion Univ., Norfolk, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
• Grant/Contract Number: AC05-06OR23177; AC02-05CH11231; SC0004094; SC0010081; 1416051; 1535641
• OSTI ID: 1466447
• Alternate ID(s): OSTI ID: 1466670
• Report Number(s): JLAB-ACP-18-2670; DOE/OR/23177-4378; PRABCJ; 080703
• Journal Information: Physical Review Accelerators and Beams, Journal Name: Physical Review Accelerators and Beams Vol. 21 Journal Issue: 8; ISSN 2469-9888
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
relativistic multiple-particle dynamics