Energy deposition studies on magnets. Aim. First applications Energy deposition studies on magnets Aim First applications First Results Planning Collaboration INFN /CERN (AT/MAS/MA) F. Broggi, C. Hoa , J-P. Koutchouk, G. Sterbini, E. Wildner NED's Meeting CERN 12/06/09

Aim Set up a collision product tracking facility that allows integrating energy deposition issues at the magnet design stage. NED's Meeting CERN 12/06/09

First applications Scaling law of Energy deposition vs. different parameters for low beta quadrupoles l* distance IP-Q1=23, 19, 16, 13 m Aperture of the coils > 70 mm Q1 Q2 Q3 IP Early separation scheme (D0 separator dipole close to the IP) for the LHC upgrade Q1 Q2 Q3 IP D0 NED's Meeting CERN 12/06/09

First applications Geometry layout for the triplet scaling laws Simplified IR region Vacuum chambers TAS Beam Screens NED's Meeting CERN 12/06/09

First applications D0 study Geometry layout with a simple copper cylinder NED's Meeting CERN 12/06/09

First results Tracking results P-P collisions High energy particles in the forward direction Low energy particles with transverse momentum NED's Meeting CERN 12/06/09

First results Tracking results Impinging Power w.r.t to the distance to the IP Energy range of particles Geometrical parameters Aperture and thickness Solid angle amplitude Fixed longitudinal length Non intuitive law P=f(z) Investigations in progress Aperture and thickness ∆ z distance to the IP Fixed length of 1 m NED's Meeting CERN 12/06/09

First results Energy deposition Power absorbed by the D0 : 34 W Seems reasonable with average 8.6 mW/cm3 and peak 50 mW/cm3 12 mW/cm3 Total 34 W 52% photons 18.5% pions – 16.5 %pions + 1.6 % neutrons 1.3% protons 10% others NED's Meeting CERN 12/06/09

Planning Computation on progress Next steps Parameter studies for the scaling law on Power Deposition time scale: Valencia’s workshop Energy deposited in D0: double-checks going on by calc. the TAS. If confirmed, no show-stopper. Next steps Reference case: nominal LHC low beta NbTi quad in IR1 and IR5 Find agreement with N. Mokhov’s (FNAL) results (MARS) and the CERN/INFN model (FLUKA) including updated description of the geometry and the magnetic fields including detector magnets Energy deposition/dose estimations on coil’s insulation for design optimization NED's Meeting CERN 12/06/09