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Unless informed otherwise by the beamline support staff, the beamtime starts at noon of the first day allocated to the experiment and end at 8:00 am of the last day; an exception to this rule are the first day of Accelerator Physics and Accelerator Maintenance, when the beamtime usually ends at 6 am. Accelerator shifts are usually scheduled on Monday and Tuesday every two weeks, and are indicated in the schedules. Also, shorter shifts are sometimes scheduled on BL12-2, with different starting and finishing times. You will be informed by staff about unusual starting and finishing times.
Both on-site and remote users are responsible for:
Users collecting data on-site are also responsible for the following:
On site users should not attempt:
For information on beamtime requests, scheduling or beamtime, e-mail Lisa Dunn.
For inquiries about facilities, experimental capabilities, or related topics, contact the assigned support staff scientist found in the user support schedule. Please use the contact information provided below.
For information on how to ship dewars or equipment to SSRL, consult the shipping procedures. For further inquiries send e-mail to firstname.lastname@example.org.
To request a computer id and questions about a user unix account, contact Edgar Estebanez
During a remote experiment:
During a experiment on-site:
For sample container exchanges and other support that requires staff to be on-site:
Important: Note that there is no beamline support staff on site during the weekend or outside normal working hours; issues that require staff being present at SSRL at these times will be dealt with at the staff's earliest convenience.
Blu-Ice provides an interface for moving samples between cassettes and/or uni-pucks. This facility is available to SSRL users during their scheduled beamtime. The following policies apply:
Biohazardous materials include infectious agents and hazardous biological materials as described by the United States Department of Health and Human Services, Centers for Disease Control for infections agents and by the National Institutes of Health for recombinant DNA molecules.
All experiments involving biohazardous materials must be clearly identified and categorized according to their biosafety level and carried out according to the guidelines set by Stanford University Currently, the following restrictions apply for biohazardous samples:
These policies must be followed by users bringing their samples to SSRL. We recommend that remote users follow the same or similar safety protocols when applicable.
The following protocol is required for on-site preparation of heavy atom solutions or crystal soaking. It does not apply to use of frozen pre-soaked crystals.
The following protocol is required for bottles/canisters of propane or ethane gas used at SSRL for the purpose of flash-cooling samples. The use of prefrozen samples containing propane or ethane does not require any special protocol.
This section describes hazards and proper handling procedures for work with liquid nitrogen
Direct contact with liquid nitrogen, metal or other material that is in contact with liquid nitrogen or cold nitrogen gas can cause freezing of exposed tissue.
In confined areas, there is a risk of asphyxiation by displacement of oxygen. Do not use liquid nitrogen in a confined space unless the maximum allowable amount of liquid nitrogen has been posted by the SSRL Safety Officer or if the room is equipped with an oxygen deficiency (OD) alarm.
The following policies apply for work at the SSRL involving gases delivered in compressed gas cylinders (CGC):
|Technical questions: Webmaster
questions: Mike Soltis
|Last modified:Thursday, 10-Mar-2022 15:08:02 PST.|