Lhc Beam Dump Granite

Weisse cern ch 1211 geneva 23 abstract the severe constraints on the beam dumping system for the proposed large hadron collider lhc arising from the beam energy 7 7 tev and intensity 5 x 1014 protons.

Lhc beam dump granite.

Kramer et al apertures in the lhc beam dump system and beam losses during beam abort epac08 genoa 2008. Bracco et al scenarios for beam commissioning of the lhc collimatiom system pac07 albuquerque 2007. The energy stored in one of these beams 320 megajoules mj is considerable the equivalent of a tgv train travelling at 150 km h. Total beam energy at top energy nominal beam 362 mj.

As shown in fig. 2808 1 15 10 11 7 10 12 1 602 10 19 joules 362 mj per beam. The nominal lhc beam contains an unprecedented stored energy of 350 mj contained in 2808 bunches with a beam sigma of the order of 0 3 mm. Ferrari infn via celoria 16 20133 milan0 g.

But when these beams need to be stopped such. The tbses will stand at the entry of the ti2 and ti8 tunnels. Hl lhc the performance of this internal beam dump system has been reviewed for future operation. Three beam dumps ted and two beam stoppers tbse will be installed in the lhc transfer lines 1.

Using a light high melting point material like graphite ensures that the beam energy is distributed throughout the block and that the block will last for the decades long life of the lhc. After the current long shutdown ls2 in run 3 2021 2024 it will reach 555 mj. The initially considered solution for the sps beam dump system is to design a new dedicated external system with a dump block in a shielded cavern separated from the. Beam gas lswg lhc beam parameters 11 mostly h c o from h2 co co2 ch4 h2o elastic scattered at point like coulomb field of the nucleus of the residual gas atom particle transversely deflected increasing it s betatron amplitude.

The beam energy meter will be one of the critical elements in the chain of equipment required to dump the beam 8 since underestimating the beam energy could send the full lhc beam into one of the arcs. Design of the lhc beam dump a. The extremely high destructive power of such a beam imposes an external dump where the beam must be extracted completely from the lhc diluted to reduce the peak energy density and then absorbed in a. The particles in the lhc are ultra relativistic and move at 0 999997828 times the speed of light at injection and 0 999999991 the speed of light at top energy.

2808 bunches 1 15 10 11 protons 7 tev each. Dierent possible upgrades of the beam dumping system have been investigated. Abnormal beam dump actions on the lhc collimation system lhc project note 293 geneva may 2002 p4. Elements together with the lhc beam interlock system sec.

15 5 the lhc beam energy meter and the associated signal transmission 7. Combine that with the lower melting point of a material like lead and in short order your beam dump block would become a beam dump mess.