Apply for Beamtime

Beamtime at GSECARS, Sector 13

GSECARS provides earth, environmental and planetary scientists with access to the high-brilliance hard x-rays from the Advanced Photon Source (APS), a third-generation synchrotron light source at Argonne National Laboratory.  GSECARS staff work with prospective users to help them submit beam time proposals, to prepare samples before they arrive, to collect their data, and to analyze the data and prepare it for publication after they leave the facility. 

 All the available beam time at GSECARS is open to the scientific community on the basis of peer-reviewed beam time proposals to the APS General User Program.                                                                                                                                       

Apply for Beamtime 

You must register as a user and receive a badge number before submitting a proposal.                                                                                                                                 
►  Click to register. 

Proposals are peer reviewed and rated by a technique specific Proposal Review Panel (PRP). Beamtime is awarded based on score and feasibility.  It is suggested that a user select more than one beamline when submitting a proposal to increase the chances of receiving beamtime. Proposals expire in two years or when the number of PRP recommended shifts has been used, whichever comes first.

GSECARS recommends that any  potential users contact the beamline scientist in their field to discuss their proposal prior to submitting the proposal.

User Agreements

A User Agreement, signed by a user's home institution, is required before any experiments can be run at the APS or at any of Argonne's user facilities.

  • For additional information, including a list of institutions which currently have user agreements in place, click here.