Micro-Bunched Beam Production at FAST for Narrow Band THz Generation Using a Slit-Mask

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

OSTI ID:1437981

Hyun, J. ^[1]; Crawford, D. ^[2]; Edstrom Jr, D. ^[2]; Ruan, J. ^[2]; Santucci, J. ^[2]; Thurman-Keup, R. ^[2]; Sen, T. ^[2]; Thangaraj, J. C. ^[2]

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1. Sokendai, Tsukuba
2. Fermilab

We discuss simulations and experiments on creating micro-bunch beams for generating narrow band THz radiation at the Fermilab Accelerator Science and Technology (FAST) facility. The low-energy electron beamline at FAST consists of a photoinjector-based RF gun, two Lband superconducting accelerating cavities, a chicane, and a beam dump. The electron bunches are lengthened with cavity phases set off-crest for better longitudinal separation and then micro-bunched with a slit-mask installed in the chicane. We carried out the experiments with 30 MeV electron beams and detected signals of the micro-bunching using a skew quadrupole magnet in the chicane. In this paper, the details of micro-bunch beam production, the detection of micro-bunching and comparison with simulations are described.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1437981
• Report Number(s): FERMILAB-CONF-18-141-APC; 1673643
• Resource Relation: Conference: 9th International Particle Accelerator Conference, Vancouver, BC Canada, 04/29-05/04/2018
• Country of Publication: United States
• Language: English