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Title: One nanosecond pulsed electron gun systems

Abstract

At SLAC there has been a continuous need for the injection of very short bunches of electrons into the accelerator. Several time-of-flight experiments have used bursts of short pulses during a normal 1.6 micro-second rf acceleration period. Single bunch beam loading experiments made use of a short pulse injection system which included high power transverse beam chopping equipment. Until the equipment described in this paper came on line, the basic grid-controlled gun pulse was limited to a rise time of 7 nanoseconds and a pulse width of 10 nanoseconds. The system described here has a grid-controlled rise time of less than 500 pico-seconds, and a minimum pulse width of less than 1 nanosecond. Pulse burst repetition rate has been demonstrated above 20 MHz during a 1.6 microsecond rf accelerating period. The order-of-magnitude increase in gun grid switching speed comes from a new gun design which minimizes lead inductance and stray capacitance, and also increases gun grid transconductance. These gun improvements coupled with a newly designed fast pulser mounted directly within the gun envelope make possible subnanosecond pulsing of the gun.

Authors:
Publication Date:
Research Org.:
Stanford Linear Accelerator Center, CA (USA)
OSTI Identifier:
6164730
Report Number(s):
SLAC-PUB-2261; CONF-790327-122
TRN: 79-012354
DOE Contract Number:  
EY-76-C-03-0515
Resource Type:
Conference
Resource Relation:
Conference: IEEE particle accelerator conference, San Francisco, CA, USA, 12 Mar 1979
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ELECTRON GUNS; PERFORMANCE; PULSE TECHNIQUES; LINEAR ACCELERATORS; BEAM INJECTION; DESIGN; ELECTRONIC CIRCUITS; PULSES; ACCELERATORS; 430301* - Particle Accelerators- Ion Sources

Citation Formats

Koontz, R.F. One nanosecond pulsed electron gun systems. United States: N. p., 1979. Web.
Koontz, R.F. One nanosecond pulsed electron gun systems. United States.
Koontz, R.F. Thu . "One nanosecond pulsed electron gun systems". United States. https://www.osti.gov/servlets/purl/6164730.
@article{osti_6164730,
title = {One nanosecond pulsed electron gun systems},
author = {Koontz, R.F.},
abstractNote = {At SLAC there has been a continuous need for the injection of very short bunches of electrons into the accelerator. Several time-of-flight experiments have used bursts of short pulses during a normal 1.6 micro-second rf acceleration period. Single bunch beam loading experiments made use of a short pulse injection system which included high power transverse beam chopping equipment. Until the equipment described in this paper came on line, the basic grid-controlled gun pulse was limited to a rise time of 7 nanoseconds and a pulse width of 10 nanoseconds. The system described here has a grid-controlled rise time of less than 500 pico-seconds, and a minimum pulse width of less than 1 nanosecond. Pulse burst repetition rate has been demonstrated above 20 MHz during a 1.6 microsecond rf accelerating period. The order-of-magnitude increase in gun grid switching speed comes from a new gun design which minimizes lead inductance and stray capacitance, and also increases gun grid transconductance. These gun improvements coupled with a newly designed fast pulser mounted directly within the gun envelope make possible subnanosecond pulsing of the gun.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {2}
}

Conference:
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