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NSTX

NSTX. Supported by. NSTX Centerstack Upgrade Project Meeting P. Titus May 25 2011 TF Temperatures LLD Disruption Analysis Lower Secondary Passive Plate Disruption with Support Struts. Temperature (C). TF current diffusion analysis (normal operation pulse). 127 114.5 102 89.5 77 64.5

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NSTX

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  1. NSTX Supported by NSTX Centerstack Upgrade Project Meeting P. Titus May 25 2011 TF Temperatures LLD Disruption Analysis Lower Secondary Passive Plate Disruption with Support Struts

  2. Temperature (C) TF current diffusion analysis (normal operation pulse) 127 114.5 102 89.5 77 64.5 52 39.5 27 14.5 2 Near upper flag: Max: 112°C (a little below the corner) Corner temperature is 111°C. Near lower flag: 117°C no cooling during pulse(0~10.136s) Add more material here Temperature (C) 127 114.5 102 89.5 77 64.5 52 39.5 27 14.5 2 6” Near upper flag: Max: 110.8°C Near lower flag: Max: 113.4°C Add cooling during pulse (0~10.136s), 0.25” tube, 3m/s, inlet temp 12 °C Only two small areas have temperature >101°C 2”

  3. From Han: 113°C and 110°C are at EOFT, please see the attached ppt. Total pulse length is 10.136s, flat top ends at 9.512s. After flat top, the temps lower down a little because less heat produced from current and the temps re-distribute (heat transfers to low temp components) Finesse the TF Current Profile i.e drop it a bit at the end or at the beginning –Do you need full field at these times? Shorten the TFC Current Profile Test the CTD 425 to 115 degrees C. Degradation Between 80 and 100C is Small Accept as-is – Assume De-Bond in Small Regions where Temps are Above 100C

  4. Step FX FY FZ 36 593 2205 656 37 -244, -163 -108 38 318 -1749 541 39 -1325 -4743 -579 40 8.4 -4031 989 Step FX FY FZ 37 -138, -1067 142 38 427 2341 129 39 406 -1258 102 40 262 3318 7.8

  5. Reaction Force

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