
Information for POWGEN Users
Announcements
POWGEN has a partnership with beam line 11BM at the Advanced Photon Source where users can get x-ray data if they have an approved proposal at POWGEN. This option is not available for mail in proposals.
Useful Links for POWGEN Users
- POWGEN Experiment Guide: A–Z
- POWGEN Hutch Poster
- POWGEN Mail In Program Guide
- POWGEN Monitor Webpage
- POWGEN Rebuild paper Journal of Applied Crystallography, 52, 1189-1201 (2019)
- POWGEN Original paper Zeitschrift fur Kristallographie, 1, 127-135 (2011)
- POWGEN User Manual for Data Acquisition
- POWGEN User Manual for Data Reduction
Shipping Addresses for Samples
Please visit the ORNL User Facilities Sample Handling and Shipping page.
Quick Start Guides for Sample Changes and Shutter Operation
- Gas-flow furnace sample change
- Vacuum furnace sample change
- Janis cryofurnace with high temperature stick (30-750 K) sample change
- Janis cryofurnace with low temperature stick (5-500 K) sample change
- Orange cryostat sample change
- PAC sample changer loading
- Removing Samples from Beamline 11a
- Shutter operation
Data Reduction and Analysis by Run Cycle
Parameter files for GSAS, GSAS-II, FullProf, Jana and TOPAS can be downloaded from the table below. Be sure to pick the correct cycle. These files are also stored in the /SNS/PG3/run_cycle_11A_CAL folder in the analysis computer where cycle is year_1 or year_2 based on cycle A or B.
Data will be automatically reduced into the following formats:
- Extension .gsa for GSAS and GSAS-II: Files are numbered with banks which correspond to the wavelength used. Please use the corresponding bank # from the parameter files for refinements.
- Extension .dat for FullProf and Jana: The data file names themselves tell you which bank they are and the same bank IRF file should be used for FullProf.
- Extension .xye for TOPAS: Please refer to the TOPAS example below.
Dates | Run Numbers | GSAS | GSAS-II | FullProf | Jana | TOPAS | |
---|---|---|---|---|---|---|---|
2022 Nov - Feb 2023 |
53957 - 55220 | GSAS-II_2022B_HR | FullProf_2022B | Jana_2022B | TOPAS_2022B | ||
2022 January - August |
51648 - 53956 | GSAS-II_2022A_HR | FullProf_2022A | Jana_2022A_HR | TOPAS_2022A | PDF_2022A | |
2021 July - October |
50286 - 51647 | GSAS-II_2021B_HR_v2 | FullProf_2021B_HR | TOPAS_2021B_HR | PDF_2021B | ||
2021 February - June |
48322 - 50285 | GSASII_2021_HR_v2 | FullProf_2021A | TOPAS_2021A_HR | PDF_2021A | ||
2020 May - November |
46137 - 48321 | GSASII_2020A-may_HR | FullProf_2020A-may_HR | TOPAS_2020B | PDF_2020A-may | ||
2020 January - February |
45453 - 46136 | GSASII_2020A | FullProf_2020A_HR | TOPAS_2020A | PDF_2020A | ||
2019 June - December |
43654 - 45452 | GSAS_2019B_HR | GSASII_2019B_HR | PDF_2019B | |||
2019 January - May |
42816 - 43653 | GSAS_2019A | Topas_PDFGui_fit |
Data Analysis Tutorials
- Mantid Tutorial - Finding Structural Change from Event Data
- FullProf refinement example
- GSAS/EXPGUI refinement example
- GSAS-II joint X-ray/neutron refinement using 11BM and POWGEN data
- TOPAS refinement example
How to access POWGEN data
Step by step instructions are also provided in the document POWGEN_Data_Access_User_Manual.
- Create an ORNL Resource account (if you don’t already have one) at the ORNL Guest Portal.
- Once you have an account, you can login to our analysis cluster by clicking on Launch Session at https://analysis.sns.gov. Alternatively, you may install the ThinLinc client on your local machine.
- Once you login, under your home directory you will see the following folder structure /data/SNS/PG3/IPTS-#/. All the run numbers will appear for your data. (Alternatively, you can find your data in /SNS/PG3/IPTS-#/shared/autoreduce.) Your automatically reduced data can be found in the /shared/autoreduce folder, along with a summary file called PG3_IPTS-xxxxx_runsummary.csv.
- Secure ftp or secure shell (SSH) will allow you to copy the data to your local drive. Select one of the programs below to download and install: FileZilla or Cyberduck.
Enter the following information to connect to the analysis computers:
Host: analysis.sns.gov
Your username and password
Port: 22