The Electron Gun with its power supply can be used to inject electrons into a vacuum chamber. These electrons are primarily used to generate ions by electron impact. When used with the Pulser, it can be used as an EI source for a TOF Mass Spectrometer.
GENERAL DESCRIPTION
Electrons are emitted from a hot wire filament and accelerated to an energy level which is adjustable to between 40 and 100V. Most of these electrons are collected by the first lens element and are displayed on the meter as Emission Current. About 10% of them will pass through the slit and past the second lens element which is connected to the Focus Voltage. They then pass through the split lenses which are mechanically touching the Grid Plates of the Ion Source.
The Gun and
Power Supply were designed to operate at the potential of the
Grid Plates which can be as high as 3500VDC continuous or 5KV
short term. 
The Gun is mounted
on a standard 2.75 CONFLAT flange.
The Filament Assembly is one inch in diameter and will extend into the vacuum as far as requested in order to make proper contact with the grid plates.
EGUN POWER SUPPLY SPECIFICATIONS
CABINET SIZE 19.0" Width X 3.5" Height X 13.5" Depth
CABINET WEIGHT 9.5 Lbs.
INPUT POWER 100/120/220/240 Volts, 1 Phase, 50-60Hz
D-1050 DUAL OUTPUT PUSH/PULL PULSER
For use when ions are generated at ground potential, such as in an Ion Trap. This Pulser offers dual, simultaneous outputs independently adjustable from plus and minus 0 to 950V, for a total of a 1900V differential.
In the usual TOF instrument, ions are generated with a Pulsed Laser which gives them all the same start time. In some applications ions are generated in a different way or a different place and there is a need for some way to inject them into the flight tube at the same time.
GENERAL DESCRIPTION
The Pulser is used to deliver a voltage pulse which can be varied in magnitude, duration and timing interval. These pulses when applied to elements of a TOF instrument can be used to extract bursts of ions and to gate or deflect Ion or Electron Beams.
It provides voltage steps of 0 to 400V from an internal power supply with a rise and fall time of 10 nanoseconds. It can be biased up to 5000V continuous. This is adequate for an instrument with pulsed extraction voltage of less than 400V and acceleration voltage less than 5000V. Maximum repetition rate is 30 KHZ.
The power supply can be wired for either positive or negative going pulses. It will also work with a positive or a negative bias voltage which is monitored on the front panel. NOTE: 2 wires must be changed to enable the meter to read upscale with a negative bias voltage.
The power supply has a pulse delay circuit which allows the user to adjust both delay and pulse duration. It must be triggered from an external pulse generator.
PULSER POWER SUPPLY SPECIFICATIONS
CABINET SIZE
19.0" Width X 3.5" Height X 13.5" Depth
CABINET WEIGHT 9.5 Lbs.
REMOTE PULSER SIZE 5.5" Width X 1.1" Height X 4.3"
Depth
REMOTE PULSER WEIGHT 1 Lb.
REMOTE PULSER OUTPUT SHV for direct mounting to flange feedthrough
INPUT POWER 100/120/220/240 Volts, 1 Phase, 50-60Hz
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