Simulations of Field-Emission Electron Beams from CNT Cathodes in RF Photoinjectors

Conference · Mon Jun 01 00:00:00 EDT 2015

OSTI ID:1250532

Mihalcea, Daniel ^[1]; Faillace, Luigi ^[2]; Panuganti, Harsha ^[1]; Thangaraj, Jayakar C.T. ^[3]; Piot, Philippe ^[1]

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1. NIU, DeKalb
2. RadiaBeam Tech.
3. Fermilab

Average field emission currents of up to 700 mA were produced by Carbon Nano Tube (CNT) cathodes in a 1.3 GHz RF gun at Fermilab High Brightness Electron Source Lab. (HBESL). The CNT cathodes were manufactured at Xintek and tested under DC conditions at RadiaBeam. The electron beam intensity as well as the other beam properties are directly related to the time-dependent electric field at the cathode and the geometry of the RF gun. This report focuses on simulations of the electron beam generated through field-emission and the results are compared with experimental measurements. These simulations were performed with the time-dependent Particle In Cell (PIC) code WARP.

• 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: 1250532
• Report Number(s): FERMILAB-CONF-15-228-APC; 1408658
• Resource Relation: Conference: 6th International Particle Accelerator Conference, Richmond, Virginia, USA, 05/03-05/08/2015
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS