|
|
Laboratory Access, Training
Requirements and Policies
The MIC X-ray facility is
available to the entire UCLA community.
All users are
required to undergo training before they are authorized to use the x-ray
instruments to perform data collection independently. The training
consists of:
-
Radiation Safety Training:
This is provided by the Department of Environment, Health & Safety
staff at UCLA. Individuals are required to attend a seminar or watch
a video which provides background information on the health effects
of ionizing radiation and methods to avoid it. Individuals should
contact Mr. Charles F. Myers, Senior health Physicist (x57147,
email:
cmyers@ehs.ucla.edu
for appointments. Please read
radiation safety
manual
for more information.
-
Instrument Specific Training:
This is conducted by the laboratory staff or by a designated
authorized user. This one-on-one training session covers radiation
safety features of the instrument as well as data collection and
analysis procedures. In general, after this training, the users of
the Powder Diffractometer should be able to operate the instrument
according to the documented procedure without supervision. For
single crystal diffractometers more than one session may be required
before a person is certified to use the diffractometer.
-
Scheduling
-
Diffractometer users from the UCLA Department of
Chemistry & Biochemistry have precedence over persons from
outside the department.
-
Scheduling on the single crystal diffractometer
is based on a first come first served basis. Exceptions are
allowed for samples which are unstable.
-
When someone is using the diffractometer, it is
expected that full time will be devoted to getting it to the
data collection stage and that data will be collected as
efficient a manner as possible.
-
Scheduling on the powder diffractometer is based
on the sign-up sheet (available in the laboratory). Time should
be reserved before using the diffractometer. Due to high demand
on the instrument, individuals should use overnight hours for
longer scan times or multiple sample runs. Please do not signup
for more time than you need. Start and finish your session on
time and clean up after you are done.
-
The laboratory director may reschedule work in
order to optimize the productivity of the crystallography
laboratory.
-
Radiation Safety
-
Due to serious health hazards associated with
exposure to radiation, the X-ray diffractometer have number of
safety mechanisms to prevent such occurrences. All our
diffractometer are in radiation shielding enclosure interlocked
with x-ray shutters. They are also equipped with fail-safe
warning lights for the status of x-ray generator and shutters.
Users must not disable, alter, modify or bypass any safety
interlocks associated with X-ray equipment.
-
X-ray
diffractometer users
should wear the radiation dosimeter badge to monitor potential
exposure.
-
Only trained staff members are authorized to
perform maintenance on X-ray equipment.
-
Radiation emitted from the diffractometer is
intense, penetrating and dangerous. A hand held radiation
monitor is available for your use---Use it.
-
General
-
When publishing
the results of structures determined by using the Smart 1000 CCD
diffractometer, please acknowledge NSF support in the following
terms: “This material is based upon work supported by the
National Science Foundation under grant No. 9871332.”
-
Please observe
all posted signs in the laboratory. When in doubt ask questions
and report problems immediately.
Top
á
|
