1. ITPA Expert Group Meetings, October 2002, Cadarache, France STATUS and PLANS for the ITPA PROFILE DATABASE C M Roach, M Walters EURATOM/UKAEA Fusion Association, Culham Science Centre, Abingdon, Oxon, OX14 3DB, UK. CONTENTS Brief Infrastructure Overview Recent Data additions Tool Developments Integrating the ITB Profile Data Conclusions This work was jointly funded by the UK Department of Trade and Industry and EURATOM

2. ITPA Expert Group Meetings, October 2002, Cadarache, France Block Diagram of Profile Database Infrastructure Profile DB sits on PC, OUTSIDE MAIN JET FIREWALL. backed-up inside firewall RedHat Linux7.2 http://tokamak- profiledb.ukaea.org.uk Main JET Firewall Data mirrored, backups. OUTSIDE MAIN JET FIREWALL http://tokamak- profiledb.ukaea.org.uk INSIDE MAIN JET FIREWALL Web Site: with tools and documentation Public and working versions of profile database Access through: ftp, http and MDSplus: RDB search tool http / ftp / MDSplus Users: remote access to DB for user tools, MDSplus, r/w, display, analysis DB Manager Less restrictive Firewall

3. ITPA Expert Group Meetings, October 2002, Cadarache, France INFRASTRUCTURE OVERVIEW: What is There? Read access to data available through  http and ftp to Ufiles (also a few eqdsk files)  MDSplus to trees containing Ufile data Various graphical tools are available, and there are a number of example routines to read the data. Relational database now developed and this provides an indexing system to help users to find discharges of interest  relies on structured comments and global 0D data Data submissions presently through emailing Ufiles to the database manager.

4. ITPA Expert Group Meetings, October 2002, Cadarache, France INFRASTRUCTURE OVERVIEW (ctd): What is Still to Come? Plan improved automation in data submission procedure  present system has not been problematic so far. Direct write access through MDSplus and ftp.  agreed in principle, as security holes will not threaten JET/UKAEA.  machine itself may of course become vulnerable.  automatic checking procedure, prior to uploading database. Need tools to write MDSplus trees, conforming to a set of required standards. Users need to learn to use these tools. Improvements to the relational database. More physics tools (from users)

5. ITPA Expert Group Meetings, October 2002, Cadarache, France Addition of data

6. ITPA Expert Group Meetings, October 2002, Cadarache, France NEW DATA SUBMISSIONS to the PROFILE DATABASE There have been a number of data submissions since the Princeton Meeting D3D: #99411, a high performance ELMy H-mode (M Murakami) JET: #46664, 51599, 53521, 53532, 53537, ITB discharges (P Stubberfield and V Parail) TS: #18302, 18305, 18319, 18368, 18370, 18372, 18488, 18490, 18500, 18496, 18504, 18507, 18520, 18765, 18768, 18769, 18771, 18774, 18775, 18778, 18780, 18790, 18792, 18799, 18801, 18805, 18807, 28 electron heated discharges (T Aniel, and T Hoang) Promises of discharges from TCV and T10

7. ITPA Expert Group Meetings, October 2002, Cadarache, France TOOL Developments NTCC Data Server: Java package for plotting profile database data at any web browser (J Carlsson, J Cary and A Kritz). –Presently operational for PR98 data –Working on authentication to access the working data. –Will be advertised when fully functioning for working data

8. ITPA Expert Group Meetings, October 2002, Cadarache, France TOOL Developments Relational Database Search Tool: ITPA Profile RElational Database, IPRED –Relational database, using MIMER RDBMS –IPRED contains all the signal metadata and the comments and zerod data. Currently the only metadata stored is the signal size information. –Also contains all the discharge, file and MDSplus node name information. –makes possible an extensive range of searches or data retrievals eg:  select all discharges providing twod variable DELTAR  find discharges where STATE=‘STEADY’  seek discharges with ‘ITB’ appearing somewhere in the comments data  obtain dates of all discharges submitted to the database –web interface at: http://tokamak-profiledb.ukaea.org.uk/IPRED.htmlhttp://tokamak-profiledb.ukaea.org.uk/IPRED.html –IPRED is an excellent tool to find discharges of interest –user feedback would be much appreciated, so please use it !

9. ITPA Expert Group Meetings, October 2002, Cadarache, France IPRED table structure

10. ITPA Expert Group Meetings, October 2002, Cadarache, France TOOL Developments IPRED (ctd): Future Plans: –client library will be made available so searches can be made in software –SQL interface will be provided Proviso: High quality and complete ZEROD and COMMENTS data is crucially important in helping to maximise the usefulness of any relational database tool such as IPRED.

11. ITPA Expert Group Meetings, October 2002, Cadarache, France INTEGRATING ITB PROFILE DATA ITB database has 31 discharges with profiles: D3D (10), JT60U (9), RTP(6), TFTR(6) 12 out of the 31 ITB discharges were already in the Profile Database. ITB database uses UFILE formats that are very similar to Profile Database, though zerod information is very different and is all stored for all discharges in a single file  integration possible, and desirable  converging the databases allows sharing of tools and infrastructure All discharges from d3d, tftr and rtp (22 out of 31) have now been integrated into the required formats for submission to the profile database  only 3 of the d3d discharges have zerod information (from csv file)  see http://tokamak-profiledb.ukaea.org.uk/ITB/index.htm (‘itbdb’, ‘wk-grp’)  also converted to MDSplus trees treename itb_tok, MDSplus server ‘tokamak-profiledb.ukaea.org.uk:8002’ (NB access requires registration)  jt60u discharges just need comments files and appropriately formatted 2D ufiles (jt60u 2d ufiles are presently written as sequence of 1d ufiles) Various difficulties encountered in integrating the data, including missing comments files and UFILE formatting issues

12. ITPA Expert Group Meetings, October 2002, Cadarache, France INTEGRATING ITB PROFILE DATA (ctd) Incompatible 0D data is biggest issue –78 0D variables in PDB, but 126 0D variables in latest ITB database –nevertheless extra 0D variables can be accommodated in PDB 0D variables have unfortunately (but inevitably) diverged slightly: Some ITB 0D variables are stored at >50 timeslices => isn’t this really 1D data? Identical physical data has been stored similarly but differently :-( –eg WALMAT (PDB) => WALLMAT (ITB) –eg PGASA and PGASZ (PDB, integers)=> PGAS1 (ITB, string) –data access will be more convenient if we can resolve these (trivial) incompatibilities agree and maintain uniform conventions tok = JET or EFDA-JET, and DIIID cf D3D (PDB) … better to remove these trivial differences?

13. ITPA Expert Group Meetings, October 2002, Cadarache, France INTEGRATING ITB PROFILE DATA (ctd) How Integrated should the ITB profile data be with the profile database? ITB profile database now stored separately from the profile database  which avoids incompatibility issues for now  but … Is this really necessary in the longer term? Possibly more convenient for users if ITB discharges are simply part of the profile database (integration issues).  Would this be desirable? If we desire STRONGER Integration: Profile Database manual should be updated in collaboration with ITB group to define a consistent set of variables incorporating additional ITB variables

14. ITPA Expert Group Meetings, October 2002, Cadarache, FranceCONCLUSIONS Infrastructure for the ITPA Profile Database is improving continually Further development requires and will respond to user feedback. –please contribute to this process! Integration of the ITB profile data should be mutually beneficial, and will hopefully encourage increased use, but there are a number of important but straightforward issues that require to be resolved.