ISSN - 17480221, Journal of Instrumentation, 2014, vol. 9, p. -
A concept of the photon collider beam dump
© 2014 IOP Publishing Ltd and Sissa Medialab srl. Photon beams at photon colliders are very narrow powerful (10-15 MW) and cannot be spread by fast magnets (because photons are neutral). No material can withstand such energy density. For the ILC-based photon collider we suggest using a 150 m long pressurized (P ∼ 4 atm) argon gas target in front of a water absorber which solves the overheating and mechanical stress problems. The neutron background at the interaction point is estimated and additionally suppressed using a 20 m long hydrogen gas target in front of the argon.