Systems Code – Hardwired Numbers for Review C. Kessel, PPPL ARIES Project Meeting, July 29-30, 2010.

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Presentation transcript:

Systems Code – Hardwired Numbers for Review C. Kessel, PPPL ARIES Project Meeting, July 29-30, 2010

Examine hardwired numbers for both the 4 corners study, and FNS-PA studies in the future f div, rad = 0.9 (SiC) and 0.95 (DCLL); fraction of power to divertor that is radiated f aux, func = 0.04; power plant auxiliary functions power fraction M n = 1.1 (SiC) and 1.15 (DCLL); neutron power multiplier in blanket and divertor f rad,edge = 0.9; fraction of radiated power in the divertor that is deposited in the divertor η pump = 0.9; pumping efficiency η CD,wall plug generic = 0.5; wall plug efficiency for generic CD source η CD,wall plug NB = 0.68; neutral beams η CD,wall plug LH = 0.68; lower hybrid η CD,wall plug IC = 0.84; ion cyclotron η CD,wall plug NB = 0.43; electron cyclotron

Continuing…. P aux,func = 50 MW; power for plant auxiliary functions P cryo = 2 MW (LTSC) or 0.5 MW (HTSC); cryoplant power η heat,wall plug = 0.43; wall plug efficiency on plasma heating (no CD) f Nw peaking = function of A = ; neutron wall load peaking factor *these are different for DCLL f FW,rad peaking = 1.25; peaking factor on FW radiation f ncf,outboard = 0.6; fraction of neutron power/radiated power going to outboard f ncf, inboard = 0.4; fraction of neutron power/radiated power going to inboard f FW,blanket = 0.9; fraction of neutron power deposited in FW/blanket zone f shield = 0.1; fraction of neutron power deposited in shield

Continuing… f div, plates = 0.5; fraction of neutron power in divertor plates f div, blanket = 0.4; fraction of neutron power in divertor blanket f div, shield = 0.1; fraction of neutron power in divertor shield Pumping power calc is different between DCLL and SiC, do not understand f div,up/down = 0.6; fraction of total power to the divertor assumed in each divertor for up/down symmetry f div,cond,outboard = 0.8; fraction of conducted power to the divertor on outboard f div,cond,inboard = 0.2; fraction of conducted power to the divertor oninboard Same for power radiated in the divertor Flux_exp = 10; flux expansion from outboard midplane to strike point on divertor plate η th = f(,q FW ) for DCLL and SiC f pump = f(,q FW ) for DCLL and SiC

Continuing… SiC Inb radial build: 0.07 m; SOL m; FW 0.01 m; gap 0.35 m; blanket 0.01 m; gap In( /3.3) m; shield 0.01 m; gap 0.40 m; VV 0.01 m; gap TF calculated 0.01 m; gap PF calculated DCLL Inb radial build: (reading a file?) 0.05 m; SOL m; FW 0.0 m; gap m; blanket 0.0 m; gap 0.05 m; backwall 0.0 m; gap In( /3.3) m; HT shield 0.20 m; skeleton ring 0.02 m; gap 0.31 m; VV 0.02 m; gap TF calculated 0.01 m; gap PF calculated Outboard radial builds are similar

Nb 3 4.2K B Tmax = 6 – 18 T; max toroidal field j CSmax = 1520 – 130 MA/m 2 ; maximum SC current density at max field j Cu = 224 MA/m 2 ; max current density in Cu σ sheath = 800 MPa; stress allowable on sheath σ b = 400 or 600 MPa; stress allowable on structure σ m = 900 MPa; stress allowable on structure f He = 0.25; fraction of He in TF coil (area or volume?) f ins = 0.1; fraction of insulator in TF coil I TF = 40,000; maximum current per turn in TF coil N TF = 16; number of TF coils 75K B Tmax = 6 – 18 T; max toroidal field j CSmax = 900 – 462 MA/m 2 ; maximum SC current density at max field j Cu = j SCmax /2; max current density in Cu σ sheath = 1600 MPa; stress allowable on sheath σ b = 400 or 600 MPa; stress allowable on structure Multiple routines for Nb 3 Sn and YBCO magnets???