BL-11A

Information for POWGEN Users

Announcements

  1. 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.

  2. German users have the option of submitting proposals through the Jülich Centre for Neutron Science (JCNS) system to access POWGEN beam-time. Users from German universities are additionally eligible to obtain funds from JCNS to assist with travel, accommodation and subsistence during their POWGEN beam-time. Details of the JCNS proposal deadline (not necessarily the same as the SNS deadline), templates, and travel support can be found on this page.

 

Become a POWGEN User 

 

Shipping Addresses for Samples 

Please visit the ORNL User Facilities Sample Handling and Shipping page.

 

Quick Start Guides for Sample Changes and Shutter Operation

 

Data Reduction and Analysis by Run Cycle

Parameter files for GSAS, GSAS-II, Fullprof and Topas can be downloaded from the table below. Be sure to pick the correct cycle. Also these files are 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: The data file names themselves tell you which bank they are and the same bank IRF file should be used.
  • Extension .xye for topas:  Please refer to the Topas example below.
Cycle GSAS GSAS-II Fullprof Topas PDF Manuals
2019-B GSAS.prm.zip GSASII_2019B_HR.zip

Fullprof_2019B_HR.zip

Topas_2019B_HR.zip

Topas_2019B_HI.zip

POWGEN_PDF_2019B

Data Reduction

Data Acquisition

2019-A GSAS.prm

GSAS-II-HighRes.instprm

GSAS-II-HighInt.instprm

Fullprof_HighRes.irf

Fullprof_HighInt.irf

Topas_Highres.inp

Topas_HighInt.inp

Topas_and PDFGui_fit

Data Reduction

Data Acquisition

2018-B GSAS.prm

GSAS-II-HighRes.instprm

GSAS-II-HighInt.instprm

Fullprof_HighRes.irf

Fullprof_HighInt.irf

Topas_Highres.inp

Topas_HighInt.inp

Topas_fit

PDFGui_Fit

Data Reduction

Data Acquisition

2017-AB GSAS.prm GSAS-II.instprm Fullprof.irf

Topas .inp

Topas.inp

Data Description

Data Reduction

Data Acquisition

2016-B GSAS   Fullprof Topas PDF Data Acquisition
2016-A GSAS   Fullprof Topas PDF Data Acquisition
Data Reduction
PDF analysis

 

Data Analysis Tutorials

 

How to access POWGEN data

Step by step instructions are also provided in the document POWGEN_Data_Access_User_Manual.

  1. Create an ORNL Resource account (if you don’t already have one) at the ORNL Guest Portal
  2. 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.
  3. 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.
  4. 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