ELECTRON GUNSEGG-3103 / EGPS-3103
ELECTRON GUN / POWER SUPPLY

100 eV to 10 keV
Focusable Electron Beams, High Current Option up to 50 mA
FOR USE IN:NEWION GUNSNEUTRAL BEAM EXCITATIONSPACE PHYSICS STUDIESSURFACE HEATINGSURFACE EXCITATIONFLUORESCENCE EXPERIMENTSSPACE CRAFT TESTINGVACUUM PHYSICS EXPERIMENTS

FEATURES / OPTIONS:EMITTERS

BEAM CURRENTS UP TO 50 mA
FOCUSING, DEFLECTION,RASTERING
2¾ inch CFF MOUNTINGCOMPUTER / REMOTE CONTROL

Firing units are user-replaceable; spare firing units can be purchased
new, and used firing units may be returned to the factory for rebuild.
Alternatively, the entire electron gun can be sent back to the factory forcomplete cleaning, rebuild, cathode replacement, and optional
in-vacuum testing.

The gun generally uses a Yttria (Y2O3) cathode to generate a highcurrent, focusable electron beam. The gun has a Pierce style geometry
with a shaped grid element and a shaped first anode element to control
the beam. Both beam energy and beam current are independently
adjustable over wide ranges. The energy is variable from 100 eV to 10
keV, and current from 200 µA to 10 mA. A high current option provides
beam currents up to 50 mA.

Pulsing is not usually available with the EGG-3103 due to the gungeometry which is optimized for high beam currents. The grid controls
the electron beam and can completely suppress emission at lowerenergies.

UHV technology is used throughout. The gun can be run in vacuums
from 10-11 torr up to 10-5 torr. The electron gun is bakable to 350°C withcables removed.

The EGPS-3103 Power Supply features a modular design withminiaturized power supply clusters, optically isolated signals, and thenew FlexPanel digital interface controller. The included power supplies
are Beam Energy, Focus, and X,Y Deflection, as well as the floating
Source/ECC and Grid supplies. The system includes a separate High
Voltage Power Supply connected to and controlled by the EGPS-3103.
The new FlexPanel provides a digital display screen and an encoder
wheel for programming 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 commoncomputer interface bus types can be accommodated, by use of
appropriate digital to analog converters. RS-422/485 conversion ispossible.
An optional LabVIEWTM computer program designed for theEGG-3103 is available for remote computer control and metering using
National Instrument DAQ boards and SCSI connectors on theEGPS-3103. The program provides a virtual panel of controls andmeters on the user’s computer screen.

EGPS-3103 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

1 - 65COMPONENTS

A rastering option can be provided by an additional separate power
supply unit, the Raster Generator Deflection Unit.

INDEX / INFORMATIONThe standard cathode is a high current, rugged yttria-coated disc(Y2O3). The cathode is not damaged by repeated exposure toatmospheric gases or water vapor when cold. Cathode lifetime is afunction of vacuum conditions and beam current as related to cathodetemperature. Cathode lifetime at low currents in good vacuum may bein the many hundreds of hours, or even over a thousand hours.

DETECTORS

EGG-3103 Electron Gun Mounted on 2¾CF Flange Multiplexer
The Kimball Physics EGG-3103 Electron Gun, with its matching
EGPS-3103 Power Supply is a medium energy, high current electron
gun with applications in general vacuum physics, surface heating,excitation, ionization, fluorescence experiments, and spacecraft
testing. It is a complete subsystem ready to attach and turn on.

EGG-3103 ELECTRON GUN SPECIFICATIONS

EGPS-3103 ELECTRON GUN POWER SUPPLY SPECIFICATIONSBEAM ENERGYBEAM CURRENTOUTPUTSENERGY SPREAD
SPOT SIZE
WORKING DISTANCE
BEAM DEFLECTIONPULSE CAPABILITY
BEAM UNIFORMITYFIRING UNITCATHODE TYPES

MOUNTING
BEAM ALIGNMENTINSERTION LENGTHGUN DIAMETER
FEEDTHROUGHSCABLES /CONNECTORSMAXIMUM BAKEOUT

100 eV to 10 keV (Independently adjustable)
Standard: 200 µA to 10 mA (Independently adjustable)
High Current option: 5 mA to 50 mA
Approx. 0.4 eV cathode thermal spread, calculatedStandard: 1.5 mm to 20 mm (Independently adjustable)
High Current option: 5 mm to 25 mm
Variable: 100 mm to 1000 mm
Std: 4 pole electrostatic: ± 1° at 10 keV; ± 10° at 1 keV
Optional: No deflection
Optional, consult Kimball Physics Engineering
Gaussian
Customer-replaceable Firing Unit includes
precision-aligned cathode and Wehnelt (G-1) assemblyHigh current yttria-coated (Y2O3) discCathodes not harmed by repeated exposure toatmospheric gases while cold
Flange Multiplexer with a 2¾ inch rotatable CF,including both tapped and clear mounting holes
Optional: Mechanical alignment with ± 2° Port Aligner
Standard: 110 mm (with deflection),
Range with deflection: 110 mm to 250 mm.
Range without deflection: 100 mm to 250 mm.
Custom lengths available. Gun manufactured atstandard length unless otherwise specified at time oforder.
34 mm, gun tube in vacuum
Multipin brazed ceramic, threaded stainless steel shell
Multiconductor high voltage fully ground-shielded cable,
coaxial grid cable, low voltage deflection cable, withmating aluminum shell connectors, to connect gun andpower supply. Standard lengths: 3 m Optional: 5 m
350°C with cables removed

All necessary voltages to drive the EGG-3103 ElectronGun (in combination with H.V. Power Supply)
ENERGY STABILITY±0.01% per hour; ±0.02% per 8 hours at full output
BEAM STABILITY±0.1% per hour with Emission Current Control or±10% per hour after warm up without ECC
CONTROLS
FlexPanel controls: Energy, Source, Grid, Focus,
X and Y Deflection, Emission Current Control
FlexPanel digital meters: Energy, Source Voltage,
Source Current, Emission Current, Grid, Focus,
METERING
X and Y Deflection
Power supplies: 0 to +10 V (-10 V to +10 V, deflection)
COMPUTER/REMOTE Metering: 0 to +2 V ( -2 V to +2 V, deflection)
CONTROL & METER 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
SOFTWARE
Optional: National Instruments LabVIEWTM file, designed
to run with computer DAQ boards NI 6034E and NI 6703
INPUT
115 VAC switchable to 230 VAC, 50 to 60 Hz single
phase, 250 VA
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
Two units, total approx.:17 in. x 10.5 in. x 22 in.
(width x height x depth) excluding handles (425 mm x 260 mm x 560 mm);
19 in. rack mountable

OPTIONAL RGDU-4A RASTER GENERATOR SPECIFICATIONS
10 separate frequency selections for both X and Y
RASTER GENERATOR (X up to 1000 Hz, Y up to 50 Hz) Variable position
offset (centering). Variable window size. All controllable
remotely via RS-232, RS-422, RS-485, or analog input.
DIMENSIONS
17 in. x 3.5 in. x 22 in.excluding handles(width x height x depth) (425 mm x 90 mm x 560 mm); 19 in. rack mountable

EGG-3103 ELECTRON GUNSpecify insertion length: 110 mm to 250 mm, with deflection(Dimensions in mm)

Typical performance;data for guidance only.

Copyright © 2005 by Kimball Physics, Inc. 11/25/05 It is not necessarily possible to achieve all maximum specifications
simultaneously. Specifications Subject to Change Without Notice.