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Allow tmpcry to be higher than 10 K #1462

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jonmaddock opened this issue Nov 15, 2021 · 4 comments
Closed

Allow tmpcry to be higher than 10 K #1462

jonmaddock opened this issue Nov 15, 2021 · 4 comments
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Engineering Relating to the engineering models

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@jonmaddock
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In GitLab by @pc6783 on Nov 15, 2021, 18:04

Hey folks:

tmpcry is currently capped at 10 K. For HTS this could be much higher, with typical ranges sometimes exceeding 40 K. Let's relax this.

@jonmaddock
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In GitLab by @mkovari on Nov 16, 2021, 11:16

Good idea. Please note that the temperature is represented by several different variable names:
tftmp Peak helium coolant temperature in TF coils and PF coils (K)
tmpcry Temperature of cryogenic components (K)
thelium Helium temperature at peak field (= superconductor temperature) (K)

Note also that the superconductor critical surface functions are not always valid over the full range of possible temperatures.

@jonmaddock
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In GitLab by @mkovari on Nov 19, 2021, 13:42

Two of these are inputs, and tftmp already goes up to 40 K. It certainly won't do any harm to raise the upper limit for tmpcry, but I have no idea if it will do anything at all.

       case ('tftmp')
          call parse_real_variable('tftmp', tftmp, 0.01D0, 40.0D0, &
               'Peak TF coil He coolant temp. (K)')      
       case ('tmpcry')
          call parse_real_variable('tmpcry', tmpcry, 0.01D0, 10.0D0, &
               'Cryogenic temperature (K)')

@jonmaddock
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closed via merge request !566

@jonmaddock
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mentioned in commit bac7d28420d32aa54e84d975b0c9119e746b3a45

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