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

Abstract

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).

Authors:

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

Publication Date:

Fri Aug 24 00:00:00 EDT 2018

Research Org.:

Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Old Dominion Univ., Norfolk, VA (United States)

Sponsoring Org.:

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)

OSTI Identifier:

1466447

Alternate Identifier(s):

OSTI ID: 1466670

Report Number(s):

JLAB-ACP-18-2670; DOE/OR/23177-4378
Journal ID: ISSN 2469-9888; PRABCJ; 080703

Grant/Contract Number:  

AC05-06OR23177; AC02-05CH11231; SC0004094; SC0010081; 1416051; 1535641

Resource Type:

Published Article

Journal Name:

Physical Review Accelerators and Beams

Additional Journal Information:

Journal Name: Physical Review Accelerators and Beams Journal Volume: 21 Journal Issue: 8; Journal ID: ISSN 2469-9888

Publisher:

American Physical Society (APS)

Country of Publication:

United States

Language:

English

Subject:

43 PARTICLE ACCELERATORS; relativistic multiple-particle dynamics