X-RAD 320 Biological Irradiator

Researcher using x-rad 320 biological irradiator

The X-RAD 320 is a self-contained X-ray system for delivering a precise radiation dosage to specimens in a biological or small animal research laboratory.

The shielded cabinet includes an Adjustable Specimen Shelf, Sample Viewing Window and Beam Hardening Filter Holder.

The X-RAD Control Panel is a multilanguage selectable graphical interface with all x-ray parameters and system status clearly displayed.

Programmable exposure settings allow for fast and repeatable exposure setup.

The X-ray tube is used specifically for radiation therapy having a highly homogenous beam.

Equipment features

Equipment features

X-Rad 320High voltage generator

  • Maximum Output Voltage: 320 KV
  • Maximum mA: 45

X-ray tube

  • Maximum Potential: 320 KV
  • Maximum Power: 4000 W
  • Type: metal ceramic, fixed anode, air cooled
  • Focal Spot: 8 mm2 (per EN12543)

Dose output

3 Gy/min at 320KV, 12.5mA, 50cm SSD, (beam hardening filter =2mm Al(>15 Gy/min at 320KV, 12.5mA, 50cm SSD, [no beam hardening])

Operators control

  • KV Setting & Display Accuracy: 5KV-320 KV in 0.1 KV increments
  • mA Setting & Display Accuracy: 0.1mA to 45 mA in 0.01 mA increments
  • Settings Accuracy: < 1%
  • Exposure Timer: 1-999 seconds or 0.1-99.9 minutes or continuous
  • Programmable Settings: 250 locations to recall exposure parameters
  • Graphical User Interface for operation simplicity
  • Selectable Multi-language Display

Additional x-ray unit features

  • Automatic warm-up with Intelligent Tube Conditioning

Rates and scheduling

Rates and scheduling

FY19 Rates

$18.61 per test


  • Sign up using the online calendar.
  • Please cancel as soon as possible. Users cannot cancel reserved time on the instrument afterthe time has passed. You will be billed if you do not schedule in advance.



Training on the X-RAD Irradiator is required before users can operate this instrument independently.

Please contact Nardina Nash to schedule training: 612-626-5044, nashx018@umn.edu

The Radiation Safety for Radioactive Material Users online course must be completed as well.

Visit the Department of Environmental Health and Safety website.


Troy Lund, M.D., Ph.D.

Irradiator Coordinator

Nardina Nash


Mayo B186