Electron Gun System: 5 eV to 1000 eV
Quick Overview
Compact design with wide-angle beam
Energy Range: 5 eV to 1000 eV
Beam Current: 1 nA to 400 µA (100 µA at 50 eV)
Spot size: 20 mm to 50 mm
Mounting: 2¾CF or unmounted
Features/Options: Flood beam, Variable Mounting Configurations, Pulsing
FRA-2X1-2 ELECTRON GUN SPECIFICATIONS：
BEAM ENERGY：5 eV to 1000 eV (Independently adjustable)
BEAM CURRENT：
1 nA to 400 μA (Independently adjustable) with maximums of 50 μA at 5 eV, 100 μA at 50 eV, and 400 μA at 1000 eV
ENERGY SPREAD： Approx. cathode thermal spread, calculated Ta – 0.5eV Y2O3 – 0.4eV BaO – 0.3eV
SPOT SIZE：
Flood beam: 2 mm to 50 mm. Spot size varies with beam parameters. Design optimized for 20 mm dia spot at 50 eV and 25 mm working distance.
WORKING DISTANCE Variable: 10 mm to 50 mm
BEAM DEFLECTION ：None
PULSE CAPABILITY(using appropriate pulse generator,not included)：
Optional Capacitive Pulse Junction Box: pulse width 20 ns to 100 μs , rise/ fall 10 ns, 50 Ω impedance, 1 W standard (higher power available)
Optional Dual Grid Power Supply: pulse width 2 μs to DC, rise/ fall 500 ns, rep rates to 5kHz (TTL required)
BEAM UNIFORMITY ：Gaussian
FIRING UNIT：
For mounted gun: Customer-replaceable Firing Unit includes precision-aligned cathode and Wehnelt (G-1) assembly and anode, with insulators and connectors
CATHODE TYPES：
Standard: Tantalum disc
Optional: Barium oxide (BaO) or Yttrium oxide (Y2O3) With the exception of Barium oxide, cathodes are not harmed by repeated exposure to atmospheric gases while cold
MOUNTING：
Standard: Unmounted— optional UHV mounting kit (SS plates, clamps, wire, CFF/feedthrough)
Optional: Mounted—1a or 2¾ CFF with feedthrough or Flange Multiplexer with a 2¾ inch rotatable CFF,including both tapped and clear mounting holes
FARADAY CUP ：Various stand-alone designs are available
BEAM ALIGNMENT ：Optional: Mechanical alignment with ± 2° Port Aligner
INSERTION LENGTH：
Unmounted: approximately 17.2 mm. Leads usually extend 90 mm beyond gun structure
Mounted: Standard: 150 mm. Range: 110 to 170 mm.
Custom lengths available. Gun manufactured at standard length unless otherwise specified at time of order.
GUN DIAMETER ：Unmounted: 13.2 mm
Mounted: 19.1 mm
FEEDTHROUGHS ：Multi-pin brazed ceramic, threaded stainless steel shell
CABLES /CONNECTORS：
Multi-conductor high voltage fully ground-shielded cable,with mating aluminum shell connectors, to connect gun and power supply. Standard lengths: 3 m Optional: 5 m (included with system, optional with unmounted gun)
MAXIMUM BAKEOUT：
Unmounted: 400°C
Mounted: 350°C with cables removed(Faraday cup: removable pneumatic actuator 65°C max)
EGPS-1011 ELECTRON GUN POWER SUPPLY SPECIFICATIONS
OUTPUT ：All necessary voltages to drive the FRA-2X1-2 Electron Gun
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, Emission Current Control
METERING： FlexPanel digital meters: Energy, Source Voltage,Source Current, Emission Current, Grid
COMPUTER/REMOTE CONTROL & METER
Power supplies: 0 to +10 V
Metering: 0 to +2 V
Standard 50-pin connector for analog input/output and RS-232 serial port (RS-422 or RS-485 available, if specified at time of order)
Optional: SCSI metering and programming connectors
SOFTWARE ：Standard configuration designed for RS-232 connections.
Optional: National Instruments LabVIEWTM file, designed to run with computer DAQ boards NI PCI-6713 and PCIe-6341. SCSI interface
INPUT： 115 VAC or 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 (width x height x depth)：
17 in. x 3.5 in. x 22 in. excluding handles
(425 mm x 90 mm x 560 mm); 19 in. rack mountable