XRD Policies

Safety Policies:

The same safety policies that govern IMSERC govern the XRD area.  You must wear closed toed shoes, long pants, and shirts that cover your shoulders and midriff area. 

  • Do not wear headphones while working in the lab.
  • Wear eye protection when handling open solvent containers (including crystallization vials).
  • Wear gloves when handling chemicals, crystals or solvents.
  • Do not wear gloves when working on the computer, opening and closing the diffractometer doors, or mounting and adjusting samples.
  • If the gloves are contaminated with chemical waste, dispose of them in the waste bins.
  • You must successfully complete Radiation Safety Training before you are allowed to operate the diffractometers – this includes mounting and centering crystals, and using the data collection computers.
Equipment Policies:
  • You can ONLY be trained to operate the diffractometers by IMSERC Staff, and you must complete Radiation Safety Trainings in ISIS before you can be trained.  Arrange training with Charlotte.
  • We encourage new group members to watch older group members as they work on data collections.  However, untrained students and post-docs are NOT permitted to operate the diffractometers.  No hands in or on the enclosures and no hands on the computer.  Violators of this policy – the watcher and the watched – will have their IMSERC user privileges revoked.
  • It is OK for untrained group members to practice selecting crystals and mounting them on fibers, pins or loops.  They must not mount them on the goniometer.
  • Sign up for instrument time through NUCore.  If you are having difficulty reserving time for any reason, speak to an XRD staff member who will help you reserve an appropriate time slot.
  • Notify the IMSERC-XRD users listserv if you are logging off early.
  • Always ramp up the cold streams if your data collection finishes on Saturday, Sunday or holiday mornings.  You do not need to ramp up the temperature if your data collection will end on a normal business day.
  • Notify XRD Staff if the instrument has any issues or exhibits any strange behavior – even if it does not affect your data collection.  If you can recall what you were doing at the time, this can be valuable information.
Computer Policies:
  • Do not use data collection computers for e-mail, web-surfing, or gaming.
  • You are permitted to use the web to access Reciprocal Net and the web ICSD.  The CSD is loaded on data collection computers, as well as the Microscope computer for your use.
  • You may use APEX2 to process your data and solve and refine your structures as long as the computer is not actively being used by someone working on the instrument.
Microscope Policies:
  • Clean up the microscope bench areas when you are finished using them.
    • Turn off the lights on the microscope.
    • Probes should be cleaned and put away.
    • Slides should be disposed of in the waste containers, or stored in the appropriate petri dish.
  • If supplies are out or running low, notify an XRD staff member.
  • If waste containers are full, notify an XRD staff member.
  • You may use the microscope camera to photograph your crystals.  For assistances, see an IMSERC staff member.
Crystal Mounting Equipment:
  • Always use magnetic pins, loops or fibers when possible.  If you need to use a different goniometer head, notify an IMSERC staff member.
  • If you break a magnetic mount, place it in the yellow plastic tray and IMSERC staff will repair it.   You may repair broken fibers yourself.
  • Use the Narashige pipet puller to make new fibers.  See an IMSERC staff member to learn how to use it.