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In order to turn on the nitrogen laser the right half of the top
plate of the aluminum box needs to be removed. Inside the box
the laser and the optics is mounted on a single aluminum board.
The lasing part of the laser is confined in the left part of the box
with a separation in the central region of the box. Due to this separation
no UV laser light can escape from this left part of the box,
even during operation, so that the user can safely remove and install the
top plate above the right half of the laser casing.
The laser itself has a security key that needs
to be in a vertical position when the power switch is pressed. After
2 minutes of warmup-time an orange light turns on indicating that
it is possible now to turn the key into its horizontal position.
After this it takes 15 seconds until the laser actually turns on.
In the event of a power failure the laser will turn off and will not
turn on again after power is restored. It is necessary to turn the key
back to its vertical position and to reset the safety system of the laser.
The laser can now be turned on again by switching the key back to its
horizontal position. The pulse frequency of the laser can be regulated by
turning the black knob at the rear of the laser casing.
Next: The High Momentum Spectrometer
Up: Hall C Laser Pulser
Previous: UV Laser System
Hall-C Staff
2002-11-04