Use the iLab interface to schedule time or request training. Email Phil Jeffrey (pjeffrey@princeton.edu) if you have problems. You must have EHS radiation training, have a radiation badge, and be wearing it.

To start X-ray equipment:

Cold Stream:

• Check lN₂ level in big dewar. If below 1/4, fill the small dewar manually and take large dewar for refill
• Check lN₂ level in small dewar. Do not operate if the level is below 6.
• Turn on AD51 dry air unit
• Turn on cryo controller and program COOL to 100K - this is the default after restarting. The controller automatically HOLDs at 100K after it gets there (20 mins).

Detector:

• Pilatus 300K requires a constant stream of dry N2 gas - it will not work without it. Via the flow guage on the cryo stand, verify that the flow rate is ~30 cc/min and doesn't exceed 50 cc/min Check the N2 gas level in either the N2 cylinder or lN2 dewar (follow the gas line to its source). Fetch a new cylinder, or refill the dewar, via the loading dock if it's out. N2 gas is essential to protect the detector. Do not operate without it.

Power Up Beam:

• Use the XGControl software to control the generator: XRAY oN to spin target and attain low power (20kV 10mA)
• Increase power slowly to max 40 kV and 30 mA via the SET button in XGControl (5 kV or mA/30 sec)

At End of Run:

• Program cold stream END to 300K at default 120K/hour
• When the cold stream reaches 300K the controller should show SHUTDOWN - turn off the dry air system and the cryo control box
• Use XGControl software to slowly reduce generator power to 20 kV and 10 mA - leave it at this resting state
• Clean up the hutch and computer room, modify iLab reservation if you used more/less than your reserved time