Model SMM 770 Scanning Magnetic Microscope System
TRISTAN TECHNOLOGIES --Page
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Dewar until repairs can be made. It may be possible to save the SQUID sensor itself with
quick action.
4.
In any case, once the Dewar is warm, “back-fill” the Dewar with dry nitrogen and attach
a solid seal (glue on a small coin), and re evacuate the Dewar for safety in handling. A
new window must be installed at the factory.
5.
It is also likely that the super insulation is disturbed from rapid gas (air) flow and the
unit will have to be returned to the factory for service. Keep in mind that the only thing
that holds the Dewar top and bottom together is the vacuum in the Dewar.
6.
Do not attempt to move the Dewar from its gantry housing until you are certain
that the Dewar is holding a good vacuum.
If this is not possible, carefully wrap the
Dewar end joints with strong tape and then carefully remove it from the gantry. If tape
needs to be wrapped around the Dewar, the front of the gantry may be opened. Remove
the laser mounted in front and remove the 6 small screws from the sides of the cover.
The Dewar is held in with 3 PVC bolts. Care must be taken to disconnect all the wiring
including the small connector at the base of the Dewar for the AC calibration coil. Add
more tape, pack it in a
LOW g SHIPPING CONTAINER
and return it to Tristan
Technology for service.
Keep alcohol and solvents off the Sensor window edges at ALL times. IT WILL DISSOLVE the
adhesive causing loss of vacuum.
5.3 Gantry Maintenance
Oil and grease the x-y stages per Parker-Hanafin instructions. Do not use excessive spray oils as
they make it difficult to keep the interior of the cabinet clean. Keep dust and contaminations out of
the work area and keep the cabinet closed when possible. Keep external surfaces clean with
household window cleaner.
Video Camera, Optics, and Fiber Optic light units should be maintained in accordance with the
appropriate Hitachi, Computar, and Stocker-Yale manuals.
5.4 Vibration Isolation equipment
The Air Suspension table and Active Damping isolation units are described in the Newport Optics
Manual. Special attention needs to be given for the Jun-Air compressor and air filters and regulators
to maintain proper operation. Check fluid level in the compressor according to the manual.
6. Optional Equipment
6.1 Option 77P Pneumatic Vibration Isolation
An IsoStation Vibration Isolated Workstation air suspension table is used in combination with
option 77V. This table is designed for high load applications and has been tested at 500 lb and is
designed for >5Hz isolation.
6.2 Option 77V Active Vibration Cancellation
The SMM770, IsoStation Vibration Isolated Workstation air suspension table is equipped with an
active damping system from Newport. The Optics Activator AD500, model NVX-1206-1, improves
low frequency performance providing a 12db gain at 1Hz and 500 lb.
