INTEGRATED POWER SOURCE FOR ELECTRON GUN FOR LINAC
35kV, 1kW
INTEGRATED POWER SOURCE FOR ELECTRON GUN FOR LINAC
35kV, 1kW
This power source was designed and developed for electron gun load to be connected to linac. This integrated power source includes a power supply for gun injection, cathode heating, a DC and pulsed section for grid control.
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TECHNICAL SPECIFICATIONS
| PARAMETER | SPECIFICATION |
|---|---|
| Gun Injection Power Supply | |
| Pulse height | Variable from 0kV to -35kV peak(max) |
| Maximum Current | 3A peak |
| Pulse shape | Rectangular |
| Pulse width (measured at the flat top) | Adjustable from 4μS to 12μS |
| Ruse time | 2.5μS |
| Flat top variation (peak to peak) | Flatness within 1% with initial overshoot less than 5% of the set value |
| Pulse Repetition Frequency (RPF) | Variable from 1 to 250 pps |
| Maximum reverse voltage | Less than 1.5kV |
| Maximum average power | 360W |
| Cathode Heater Power Supply | |
| Output Voltage | 10V A.C. max |
| Output Current | 10V A.C. max |
| Regulation | Poor regulation |
| Output Reference | Floating at -40kV (output of the gun injection power supply) |
| Output isolation | Minimum -40kV w.r.t. earth under pulsed condition. (Pulsed width: 12μS, PRF:250Hz) |
| Trip | 10Amp |
| Grid Power Supply (-1kV DC Section) | |
| Output Voltage | -1kV DC settable in steps of 100V; the Grid is at negative potential with respect to the cathode |
| Output Current | 200mA DC max |
| Pulse shape | Rectangular |
| Type of control | Voltage regulated with load regulation <_ ±0.1% |
| Output reference | Floating at -40kV (output of the pulsed gun injection power supply section) |
| Output isolation | Minimum -45kV w.r.t earth under DC condition. |
| Grid Power Supply (1kV PULSED Section) | |
| Output Voltage (Pulsed) | Pulsed amplitude settable from 1V to 1kV DC precisely variable in continuous manner. This pulse overrides the -1kV DC voltage at the grid |
| Pulse Shape | Rectangular |
| Pulse width (measured at the flat top) | Adjustable from 4μS to 10μS |
| Rise time | 0.5μS |
| Flat top variation (peak to peak) | Flatness within 1% with initial overshoot less than 5% of the set value. |
| Output Current | 10mA max. |