PAC2013 - List of Authors (Panuganti, H.)

Paper	Title	Page
TUPSM24	Operation of a Diamond Field-Emission-Array Cathode in an L-Band RF-Gun	685
	P. Piot, B.R. Blomberg, D. Mihalcea, H. Panuganti Northern Illinois University, DeKalb, Illinois, USA C.A. Brau, B.K. Choi, B.L. Ivanov, J.D. Jarvis, M.H. Mendenhall Vanderbilt University, Nashville, USA W.E. Gabella Vanderbilt University, W.M. Keck Foundation Free-Electron Laser Center, Nashville, USA P. Piot Fermilab, Batavia, USA
	We report on the operation of a field-emission diamond cathode in a L-band RF-gun (1.3 GHz) at Fermilab's HBESL facility. The diamond cathode consists of an array of a million sub-micrometric pyramidal diamond tips. Beam currents in excess of 10 mA were observed and the cathode did not show appreciable signs of degradation after days of operation. Measured Fowler-Nordheim characteristics and transverse beam densities are also reported.

TUPSM25	Multiphoton Emission from Cesium Telluride Photocathodes	688
	H. Panuganti, P. Piot, C.R. Prokop Northern Illinois University, DeKalb, Illinois, USA P. Piot Fermilab, Batavia, USA
	The High-Brightness Electron Source Lab (HBESL) operates an L-band RF gun (1.3-GHz) that incorporates a Cesium Telluride photocathode illuminated by ultra-short (sub-100-fs) laser pulses. In this contribution we report recent studies on (1) characterizing the longitudinal phase of the photoemitted bunch in the blow-out regime using a single-shot diagnostics, (2) exploring the electron beam emission using 800 nm laser pulses (instead of the 266 nm nominal wavelength).

Paper

Title

Page

Operation of a Diamond Field-Emission-Array Cathode in an L-Band RF-Gun

685

P. Piot, B.R. Blomberg, D. Mihalcea, H. Panuganti
Northern Illinois University, DeKalb, Illinois, USA
C.A. Brau, B.K. Choi, B.L. Ivanov, J.D. Jarvis, M.H. Mendenhall
Vanderbilt University, Nashville, USA
W.E. Gabella
Vanderbilt University, W.M. Keck Foundation Free-Electron Laser Center, Nashville, USA
P. Piot
Fermilab, Batavia, USA

We report on the operation of a field-emission diamond cathode in a L-band RF-gun (1.3 GHz) at Fermilab's HBESL facility. The diamond cathode consists of an array of a million sub-micrometric pyramidal diamond tips. Beam currents in excess of 10 mA were observed and the cathode did not show appreciable signs of degradation after days of operation. Measured Fowler-Nordheim characteristics and transverse beam densities are also reported.

TUPSM25

Multiphoton Emission from Cesium Telluride Photocathodes

688

H. Panuganti, P. Piot, C.R. Prokop
Northern Illinois University, DeKalb, Illinois, USA
P. Piot
Fermilab, Batavia, USA

The High-Brightness Electron Source Lab (HBESL) operates an L-band RF gun (1.3-GHz) that incorporates a Cesium Telluride photocathode illuminated by ultra-short (sub-100-fs) laser pulses. In this contribution we report recent studies on (1) characterizing the longitudinal phase of the photoemitted bunch in the blow-out regime using a single-shot diagnostics, (2) exploring the electron beam emission using 800 nm laser pulses (instead of the 266 nm nominal wavelength).