Series ICA

  • Multi-output e-gun supply
  • Fast rise time pulsed Cathode current
  • Remote programming via Ethernet
  • Customizable for OEM applications
RoHs Compliant logo

Injector Control Assembly (ICA) Power Supplies

Spellman’s Injector Control Assembly (ICA) multi-output high voltage power supplies are used to supply the appropriate electrode voltages to a triode electron gun in order to inject electrons into a Linear Accelerator (LINAC). The resulting high-energy electron pulses are used to create high-energy X-Rays for applications such as cargo screening and cancer therapy.

This multi-output, rack mount power supply provides the Cathode, Heater and Grid voltages required by the e-gun. The Cathode current can be pulsed up to 500Hz. The Heater and Grid supplies float at the Cathode voltage potential, typically up to -15kV. Injector current is regulated by programming the Grid Pulse Voltage. Remote control and monitoring is via standard Ethernet protocols. LED indicators on the front panel provide basic output and fault status, including Cathode Current and Arc faults.

The ICA series can be customized for specific system requirements. The ICA series can be customized for specific system requirements.



Cargo screening, cancer therapy

Input Voltage:

100-240Vac, 50-60Hz


Output Voltage:

0 to -15kV

Pulsed Cathode Current:

200 to 1500mA

Mean Cathode Current:

5.5mA (max)

Current Pulse Width:

Up to 6μs (90% to 90%)

Current Pulse Frequency:

Up to 500Hz

Current Risetime:

200ns (typical)


Output Voltage:

0 to -6.5Vdc (wrt Cathode)





Grid (fixed):


-60 to -135Vdc (wrt Cathode)



Pulse Voltage:

0 to 340Vdc (wrt Cathode)
Injector Current is regulated by programming
the Grid Pulse Voltage


Front Panel:
Ethernet (RJ45 jack)
Interlock (24V nominal, 9 pin D-sub male pin plug)
Pulse Input (BNC)

Rear Panel:

AC Power In (IEC320 C14 male pin receptacle)
HV Out (3 pin terminal block)


24V must be present to enable output high voltage cathode. It
is intended to connect to the system to disable the ICA in case
any system interlocks have not been satisfied.

Operating Temperature:

10°C to +40°C

Storage Temperature:

-40°C to +70°C


30% to 60% relative humidity, non-condensing

Regulatory Approvals:

The ICA shall be designed in accordance with IEC 60601-1
(Edition 3) Requirements. Certification shall be by agreement.
The ICA shall be UL 94V-0 and RoHS compliant.

Trigger Present Green Input trigger is present.
AC Power Green AC supply voltage is present.
Interlock In Green Interlock in signal is present.
Arc Fault Red Arc fault signal is active.
Cathode Current Fault Red Cathode current fault signal is active.
Cathode Voltage On Amber Cathode high voltage is present.


Tables & Diagrams

ICA Front View

ICA Top View

ICA Back View

CE, ROHS, UL Marking