Laser Tray for Varian Type III (with MLC) Tray Slot

Laser Tray for Varian Type III (with MLC) Tray Slot

This tray is mounted in the treatment tray slot of a Varian Accellerator (with MLC).  After the tray is placed into the slot, two wedge sliders can be engaged into the tray slot to prevent the tray from tilting.

Pressing either side switches on the laser pointer turns unit on. Rotate gantry until the red laser dot is in the center of the treatment field.

Note: There is no automatic turn off. Battery lasts approximately 60 minutes on full charge.

Safety Precautions

Direct viewing of the laser is hazardous to the eyes. Never look directly into the laser beam. Never point the laser beam at reflective surfaces.

Calibration

1. Insert the laser tray into treatment tray slot

2. Engage the two wedge sliders into the tray slot preventing the laser tray from tilting

3. Turn the laser unit on by pressing the switches on the side of it

4. Rotate the gantry so laser is pointed towards the floor

5. Tape a sheet of white paper to the floor centered on the laser red dot

6. Rotate the collimator counter-clockwise all of the way then mark the red dot location on the paper with a black pen

7. Rotate the collimator clockwise 180 degrees and mark the location of the red dot again with a black pen

8. Draw a line between the two dots and find the center distance with a ruler, and mark it with your pen

9. Slightly loosen the screw on the target side of the tray then gently move the laser so that the laser red dot aligns to the center point

10. Tighten the screw to lock the laser in position

11. Check alignment by rotating the gantry.  The laser should remain on the center point upon rotation. Repeat steps 5-11 until the laser is aligned.

Specifications

Laser Power: <5mw

Laser Wavelength: 635nm - Red

Laser Working Temperature: -15°C to +50°C

Battery: Built-in Rechargeable 80ma Lithium ion Battery

Battery Run Time: ~60 minutes on full charge

Charging Time: ~2 hours, full charge when light indicator stops blinking

Charger: Universal USB Charger (included)