Energy Deposition of 4-MW Beam Power in a Mercury Jet Target Xiaoping Ding UCLA Target Studies Meeting, Feb. 9, 2010.

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Presentation transcript:

Energy Deposition of 4-MW Beam Power in a Mercury Jet Target Xiaoping Ding UCLA Target Studies Meeting, Feb. 9, 2010

Introduction (I) Using MARS15 to study energy deposition. Study II geometry and magnetic field map. Hg jet: r=0.5cm, tilt 100mrad to sol. axis. Proton beam (simple Gaussian distribution): r=0.15cm, tilt 67mrad to sol. axis.

Introduction (II) The unit of direct energy deposition is GeV/g p.p (GeV per gram per incident primary particle) or GeV. The number of particles in a given pulse of beam (4MW, 10GeV) is 2.5*10 15 ppp (incident primary particles per pulse). (2.5*10 15 )*(10*10 9 )*[1.6* ]=4*10 6 [W]

Target Geometry Res Sol Hg JetSTST Env (Bottle) SC Sol FeCo #1,#2,#3 Pre-Trgt Ceramic Air Gap BeWindow (z=600)

Map of Region Numbers and Material Indices in the Standard Geometry Sector Z range (-200cm,-165cm) Z range (-165cm,600cm) Z range (600cm,5000cm) R range (50cm,130cm) No. 4 Region IM=(1) air No. 5 Region IM=(-1) No. 6 Region IM=(1) air R range (0cm,50cm) No. 1 Region IM=(-1) No. 2 Region IM=(15) tungsten-carbide & Water shielding No. 3 Region IM=(-1) (IM=-1 are for the regions redefined in non-standard geometry)

Regional Energy Deposition of 4MW Beam Power Regional Name ED [GeV]P [kW]P/P beam [%] No No. 2 (WC shield) No No No. 5 (air)6.47* No. 6 (air)1.015* In WC shield, the energy deposited by EMS (electro-magnetic shower) is 1.464GeV and GeV through DEX ( ionization losses from all charged hadrons and muons).

Regional Energy Deposition of 4MW Beam Power Regional Name ED [GeV]P [kW]P/P beam [%] Air Gap9.27* Pre Trgt7.1* SC Sol3.776* Hg Jet Be Window4.542* STST Env8.242* Res Sol9.778* Ceramic2.517* FeCo #31.052*

Visual Display of Energy Deposition The max. energy deposition at the SC coil is [GeV/g per 1ppp]. So the energy deposition at SC coil is10 -8 *(10 9 )*(1.6* )* 2.5*10 15 [W/g] or [W/g].