EGF-6104 / EGPS-6104
ELECTRON GUN / POWER SUPPLY1 keV to 50 keVUniform Density Flood Beam
FOR USE IN:
SPACECRAFT CHARGE-UP STUDIESSURFACE CHARGING STUDIESBETA DECAY SIMULATIONSURFACE PHYSICS STUDIESVACUUM PHYSICS EXPERIMENTS

FEATURES / OPTIONS:ENERGY RANGE: 1 keV to 50 keV
BEAM CURRENTS to 200 μA
HIGH CURRENT OPTION up to 1 mA
WIDE ANGLE UNIFORM BEAM
DIVERGENCE CONTROLROTATABLE 2¾ inch CFF MOUNTING
FLANGE MULTIPLEXER FLEXIBILITY
USER-REPLACEABLE FIRING UNITSCOMPUTER / REMOTE CONTROLEGF-6104 Electron Flood Gun

The Kimball Physics EGF-6104 Electron Gun, with its matching
EGPS-6104 Power Supply, is intended for use in a variety of UHV
charging, space physics, vacuum physics, surface physics, andnuclear simulation applications. Maximum flexibility is achieved in aminimum of space; the entire unit mounts through a single standard
2¾ inch CF port. It is a complete subsystem ready to attach and turnon.
Electrons are generated at negative high potential, thus the user’s
target is set at ground potential. Both beam energy and beam current
are adjustable over wide ranges. The gun uses a space-charge-limited
refractory-metal cathode to generate a uniform flood beam and thedesign allows generation of the beam down to low energies, and very
low currents. Beam divergence is partially controllable electronically,
and can be accurately controlled using an optional
mechanically-actuated divergence-control shutter. Standard model
beam current is 200 μA. With a high current option, beam currents up
to 1 mA can be obtained. The EGF-6104 utilizes 4-pole magnetic
deflection to minimize aberration in beam current distribution.
UHV technology is used throughout. The gun may be completely
disassembled for cleaning and repair. The cathode firing unit assembly(which includes the cathode, cathode mount, apertures, and Wehnelt)
is user-replaceable; and the firing unit assemblies may be sent back to
Kimball Physics for rebuilding. Cathodes are not damaged by repeatedexposure to atmospheric gases or water vapor when cold; the gun canbe run in vacuums from 10-11 torr to 10-5 torr. The gun may be baked
up to 350°C with cables removed. Non-standard mountings areavailable.

The EGPS-6104 Power Supply contains all power supplies necessary
to generate the required voltages to run an EGF-6104 Electron FloodGun, including the Energy, Focus, Source, Grid, Anode supplies andMagnetic Deflection Quadrupole. All power supplies are electronicallyregulated. A computer control option allows for control of all potentials
from an interface at ground potential, via 0 to 10 V analog inputs.
The new FlexPanel provides a digital display screen and a keypad forprogramming control on the front panel. Rear panel connectors allow
remote /computer control and metering of all gun power supplies. An
RS-232 serial port and an analog input/output connector are included
on standard power supply units. All common computer interface bustypes can be accommodated, by use of appropriate digital to analog
converters. RS-422/485 conversion is possible.
An optional LabVIEWTM computer program designed for theEGF-6104 is available for remote computer control and metering using
National Instrument DAQ boards and SCSI connectors on theEGPS-6104. The program provides a virtual panel of controls andmeters on the user’s computer screen.

EGPS-6104 Electron Gun Power Supply with FlexPanel controller

Toll Free: 1 888 KIM-PHYS (1 888 546-7497) e-mail: info@kimphys.com
Tel. 1 603 878-1616 Fax: 1 603 878-3700

EGF-6104 ELECTRON GUN SPECIFICATIONSBEAM ENERGYBEAM CURRENT

1 keV to 50 keV (Independently adjustable)
Standard: 1 nA to 200 μA (Independently adjustable)
High Current Option: up to 1 mA
ENERGY SPREAD
Approx. 0.4 eV cathode thermal spread, calculated
BEAM DEFLECTION Magnetostatic (Quadrupole)
Optional: Magnetostatic beam shaping
BEAM DIVERGENCE Variable. Adjustable optics to adapt to different
diverences and different working distances
SPOT SIZE
15 mm to 50 mm
WORKING DISTANCE 100 mm to 1000 mm
PULSE CAPABILITY
Optional Capacitive Grid Pulsing Cable: pulse width(using appropriate
50 ns to 1 ms, rep rates up to 20% duty cycle
pulse generator,
not furnished)
BEAM UNIFORMITY
Depends on mask aperture, ±25% with 8mm dia. mask
(which yields ~40 mm spot at 100 mm WD)
FIRING UNIT
Customer-replaceable Firing Unit Cartridge includes
precision-aligned cathode, Wehnelt (G-1) assembly,
focus and anode
CATHODE TYPES
Refractory metal not harmed by repeated exposure toatmospheric gases while cold
MOUNTING
Standard: 2¾ inch CF flange
BEAM ALIGNMENTOptional mechanical alignment with ± 2° Port Aligner
INSERTION LENGTH 0 mm
GUN DIMENSIONS(outside vacuum)
FEEDTHROUGHSCABLES /CONNECTORSMAXIMUM BAKEOUT

550mm minimum from sealing surface to end of cable.
Gun Diameter: 76mm sealing surface end, 105mm cableend.
Multipin brazed ceramic, threaded stainless steel shell
Multiconductor high voltage fully ground-shielded, withmating aluminum connector to connect gun and power
supply. Standard lengths: 3 m Optional: 5 m
350°C with cables removed

EGF-6104 ELECTRON GUN(Dimensions in mm)

EGPS-6104 ELECTRON GUN POWER SUPPLY SPECIFICATIONSOUTPUTSENERGY STABILITY
BEAM STABILITYCONTROLSMETERINGCOMPUTER/REMOTE
CONTROL

All necessary voltages to drive the EGF-6104 ElectronGun±0.01% per hour; ±0.02% per 8 hours at full output±0.1% per hour with Emission Current Control or±10% per hour after warm up without ECC
Energy, Focus, Anode, Grid, Source, Emission Current
Control, X and Y deflectionFlexPanel digital meters: Energy, Emission, Focus,Anode, Grid, Source Volts, Source Amps, X and YDeflection
Power supplies: 0 to +10 V (-10 V to +10 V, deflection)
Metering: 0 to +2 V ( -2 V to +2 V, deflection)
On/off switches: 0 or +5 V
Standard 50-pin connector for analog input/output andRS-232 serial port (RS-422 or RS-485 available, if
specified at time of order)
Optional: SCSI metering and programming connectors

Optional: National Instruments LabVIEWTM file, designed
to run with computer DAQ boards NI 6034E and NI 6703
INPUT105 to 125 VAC switchable to 210 to 240 VAC, 47 to63 Hz, 100 W
ENVIRONMENT
Temperature: 0 to 40ºC, Relative humidity: 0 to 75% RH
non condensing.
Classified as a pollution degree 2, installation category(overvoltage category) II environment unit
DIMENSIONS
17 in. x 7 in. x 22 in. (432 mm x 178 mm x 560 mm);(width x height x depth) with rack mount kit, overall width is 19.5 in. (495 mm)
SOFTWARE