Applying for Beamtime: Returning Users


  1. Apply for Beamtime
  2. Submit an updated APS User Registration Form as a "returning user" to provide your current information. Non-U.S. citizens with expired or expiring security clearance are encouraged to re-register with the APS as soon as possible.
  3. Make sure all your required training is current by contacting:

    - APS User Office
      (630) 252-9090

    Complete any expired training Remotely.
  4. Once beamtime has been allocated and BioCARS has contacted you with dates, complete an Experiment Safety Assessment Form (ESAF) via the link sent in your confirmation letter or by logging in to the APS Scheduling System. Complete the ESAF at least 10 business days before your visit. The ESAF must be approved by both BioCARS and APS safety personnel before you can begin work.
  5. When your work is published, send the publication to the
    APS ( Include the BioCARS Acknowledgment Statement in your publications.



Aps User Portal

You can use the APS User Portal as your primary access gateway to several APS user systems. From the portal, you can update your biographical information, check in to let APS User Office know the arrival /departure times for your next visit, review the status of your required training and update it remotely, ensure that your APS access permission is current, sign a user agreement acknowledgement form, and send messages to the User Office and your beamline contact.