APS Spectroscopy Group
Sector-20 ID and BM Beamlines, & Sector-9 BM

at the Advanced Photon Source

Argonne National Laboratory
A Partnership between the X-ray Science Division and the Canadian Light Source
Canadian Light Source   Advanced Photon Source

Beamline Announcements


The APS is primarily supporting mail-in / remote experiments at this time. Contact your beamline scientist well in advance of your beamtime for latest information.


The deadline for APS Proposals and Beam Time Requests for both PUP and GUP time for the 2022-2 cycle is Friday, March 4th, 2022, 11:59 PM Chicago time.

Check out the "new' 9-1/2 minute video tour of the APS here.


Please see the APS Home Page for the most recent Coronavirus Information for Users.

Instructions for Mail-in Samples and Holders

- Please see the User Info section above for instructions on mail-in samples and holders, or click here.


- Trouble-shooting guide for users of Sector-20 beamlines



Welcome to the Spectroscopy Group Web Page.


Research at our beamlines focuses primarily on the spectroscopic (XAFS, XRS, catalysis) and microbeam (microprobe mapping, micro-XAFS, micro-diffraction) applications of hard X-rays.


On this website you will find a wealth of information relevant to accessing and using the Sprectroscopy beamlines.  If you feel something is missing or needs to be clarified, please contact us.


Regards from the Spectroscopy Group Staff.


Frequent APS Links:
Ops Information
SR Status
User Portal
Beamline Schedules
Advisory Committee
Argonne Guest House
Publication Database
Other Frequent Links:
Absorption of Gases
Estimate of photon flux
McMaster Tables
LBNL X-ray Tools
Commissioning Notebook
(internal only)

Physical Constants
X-ray Data Booklet

Sector 20 and 9-BM operations are supported by the US Department of Energy and the Canadian Light Source.
Privacy and Security Notice APS Phonebook