Wuppertal 2015 – scientific programme
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T: Fachverband Teilchenphysik
T 42: Kalorimeter 1
T 42.4: Talk
Tuesday, March 10, 2015, 17:30–17:45, G.10.06 (HS 6)
Measurement of heat-flow for the ATLAS Liquid-Argon FCal under HL-LHC conditions — •Lukas Schröder, Arno Straessner, and Andreas Glatte — IKTP TU Dresden
The ATLAS Forward Calorimeter (FCal) is a sampling calorimeter made of copper and tungsten with liquid argon as active medium. In the high luminosity phase of the LHC (HL-LHC) the luminosity will be increased up to 7 · 1034 cm−2 s−1. Under these conditions, the high energy density in the FCal may lead to formation of bubbles in the liquid argon, which would prevent a safe operation of the FCal.
The main resistance for the heat transport away from the FCal is a small gap between the FCal and the Hadronic Endcap Calorimeter (HEC) filled with liquid argon. A simulation of the heat-flow shows large systematic uncertainties. Therefore, a mock-up of this detector area has been built to determine the heat-flow across this gap experimentally. Measurement results from the FCal test setup will be reported, which will indicate if the FCal can be safely operated at the HL-LHC.