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Euratom

Euratom. TORE SUPRA. REAL TIME ECE ELECTRON TEMPERATURE PROFILE MEASUREMENTS ON THE TORE - SUPRA TOKAMAK J. L S é gui , D. Molina , F.Saint-Laurent, N.Ravenel , G.Caulier, M.Goniche,D.Mazon DRFC, CEA-Cadarache, Association CEA-Euratom, 13108 Saint-Paul-lez-Durance, France.

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Euratom

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  1. Euratom TORE SUPRA REAL TIME ECE ELECTRON TEMPERATURE PROFILE MEASUREMENTS ON THE TORE-SUPRA TOKAMAKJ.L Ségui, D. Molina, F.Saint-Laurent, N.Ravenel, G.Caulier, M.Goniche,D.MazonDRFC, CEA-Cadarache, Association CEA-Euratom, 13108 Saint-Paul-lez-Durance, France J.L Ségui

  2. Euratom TORE SUPRA • Summary • Introduction • 2) Upgraded 32-channel heterodyne radiometer • 3) Routine Data processing • 3.1 Post shot • 3.2 Real time • 4) Experimental results • 5) Conclusion J.L Ségui

  3. Euratom TORE SUPRA • 1)Introduction • On the Tore-Supra tokamak , using analytical formulas, post shot and real time Te profile processing take into account : • the magnetic equilibrium, • the total magnetic field, • the Maxwellian relativistic radial shift, • to improve radial location estimate in order to control the plasma. • The performed challenge was to realize real time process in less than one milliseçond . • It is an important goal for ITER. J.L Ségui

  4. Euratom TORE SUPRA 2) Upgraded 32-channel heterodyne radiometer Vp J.L Ségui

  5. Euratom TORE SUPRA 3) ROUTINE DATA PROCESSING 3.1 Post shot 32 calibration coefficients 32 major radius locations Pseudo toric Magnetic field equilibrium J.L Ségui

  6. Euratom TORE SUPRA with with with J.L Ségui

  7. Euratom TORE SUPRA full line: Bvac , dashed line: Btot J.L Ségui

  8. Shot number: 29029 Euratom Euratom Te (kev) dashed: with relativistic shift Ohmic+ECRH R0=2.46m R(m) TORE SUPRA TORE SUPRA Relativistic Maxwellian shift Nr=1 ohmic J.L Ségui J.L Ségui

  9. Euratom TORE SUPRA 3.2) Real time Real time processing uses C language and pretabulations in order to do Te profile calculations in a time delay less than one milliseçond. The real time input values read on the reflective memory network Scramnet are: Ip , Rp , ap , bp, D0 , piqD0 , piqJ , piqP=2 , Itor ,Vp the measured ECE plasma voltages, ne0 , piqne=1. 32 calibration coefficients 32 major radius locations Speudo toric magnetic field equilibrium J.L Ségui

  10. Euratom TORE SUPRA Total magnetic field calculations Same magnetic fields calculations as post data processing are done but using the following analytical formulas are used to go faster : with with with Relativistic Maxwellian shift Same relativistic Maxwellian shift formula has been included into the software J.L Ségui

  11. Euratom process time: 600 ms TORE SUPRA • Experimental results J.L Ségui

  12. Euratom TORE SUPRA • 5) Conclusions • On the tore-Supra tokamak, using analytical formulas, real time ECE Te profile processing take into account: • the magnetic equilibrium, • the total magnetic field, • and the Maxwellian relativistic radial shift ( very useful for Iter conditions) , • to improve radial location estimate in order to control the plasma. • The achieved process time is 600 mS J.L Ségui

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