Skip to main content
News   |   Events   |   Safety   |   CHESS-U>   |   InSitμ   |   MacCHESS   |   CLASSE

X-RAY RUNS: Apply for Beamtime

2017  Nov 1 - Dec 21

2018  Feb 7 - Apr 3
2018  Proposal/BTR deadline: 12/1/17

2018  Apr 11 - Jun 4
2018  Proposal/BTR deadline: 2/1/18

Before your experiment

In order to obtain beamtime at CHESS, you will have to file a proposal which can be conveniently done on-line using the CHESS User Database. If this is your first CHESS proposal, you will need to register with the database. Then you can move on to submitting your proposal. Proposals go through peer review and are rated. If your proposal is favorably rated, the beamline scientist will contact you about scheduling your beamtime, and maybe ask some further experimental detail. The proposal will also go through safety review and you will be asked to disclose all hazardous materials that you are planning to bring to CHESS. For users coming to CHESS via airplane, solvents or other chemicals as well as equipment can also be shipped to CHESS directly. Bring all essential tools for your experiment such as logbook, tweezers, scribes, or microdispensers; we have some, but usually not what you might like to use. Finally, consider the amount of data you will be collecting (megabytes, gigabytes, or terabytes) and consult our current data transfer recommendations on our Computing page. You will be responsible for reserving a hotel during your stay; as the Ithaca area hotels fill up quickly at times, it is recommended that you reserve your hotel as soon as you get the dates for your experiment. Maps of the area and directions to CHESS can be found here for your convenience.

Note: CHESS proposals remain valid for a duration of 2 years, during which users can request additional beamtime. The first Beam Time Request (BTR) is generated automatically upon receiving your proposal. If you want to come back for another experiment that is covered by your proposal, you will have to file a new BTR through the CHESS database. BTRs will be serviced according to proposal rating. In addition the BTR ensures that your safety information is up to date.

During your experiment

First thing upon arrival at CHESS is to register with the User Office, sign the User Agreement, and take the Online User Exam. Then you will be handed a radiation badge for working at the beamline and a card for access to CHESS after working hours. Whenever you leave the beamline, please put the badge on the board assigned to the beamline which is located close to the operator desk. Next, the CHESS Operator will take you on a brief lab tour and explain safety procedures such as interlocking an experimental hutch. If you brought hazardous equipment or chemicals, there will be a review by the CHESS Safety Officer assigned to your experiment. The beamline scientist will make sure that the beamline is properly configured, help you set up equipment, and train you in the use of the beamline. If there is a problem at the beamline after the beamline scientist has left, please ask the CHESS Operator for help; our operators are well trained in safety and equipment. The Operator will decide whether the beamline scientist will need to be called in.

For those times you may need to take a break away from CHESS, Ithaca has many unique offerings.

After your experiment

Please remove all your samples, equipment, and solvents from the beamline. Beamline equipment will be taken care of by the beamline scientist. Make sure to return your radiation badge and your parking permit to the CHESS Operator. If your experiment was labeled hazardous, you will also have to do a safety check-out with the CHESS Safety Officer, to ensure all hazardous materials are properly disposed of. Also make sure to collect all of your notes and logbooks. Data collected at most CHESS beamlines are written to a centralized data acquisition and storage system known as CHESS-DAQ. Back up your data onto your hard disk; due to the high volume of data collected on area detectors, this is your most convenient way to take your data home. Data will also be archived at CHESS. See: Data Management Plan for CHESS Facility. Last but not least, please fill out the user feedback form, as we aim to continually improve the CHESS user experience.

When you are ready to publish

Please add the CHESS Acknowledgement to your acknowledgement section; our funding agencies are keen to see that their grant money is well spent! Depending on the level of involvement of the beamline scientist or other CHESS staff in your experiment, you may want to acknowledge their help as well. If you collaborate with a CHESS scientist with experiment and/or data analysis, he or she should be a co-author. Please send us a copy of your accepted paper for our records and our annual report.