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The ATLAS Level-1 Calorimeter Trigger
R Achenbach2, P Adragna4, V Andrei2, P Apostologlou5, B Åsman6, C Ay3, B M Barnett5, B Bauss3, M Bendel3, C Bohm6, J R A Booth1,5, I P Brawn5, P Bright Thomas1, D G Charlton1, N J Collins1, C J Curtis1, A Dahlhoff3, A O Davis5, S Eckweiler3, J P Edwards5, E Eisenhandler4, P J W Faulkner1, J Fleckner3, F Föhlisch2, J Garvey1, C N P Gee5, A R Gillman5, P Hanke2, R P Hatley5, S Hellman6, A Hidvégi6, S J Hillier1, K Jakobs3, M Johansen6, E -E Kluge2, M Landon4, V Lendermann2, J N Lilley1, K Mahboubi2, G Mahout1, A Mass2, K Meier2, T Moa6, E Moyse4, F Müller2, A Neusiedl3, C Nöding3, B Oltmann3, J M Pentney4, V J O Perera5, U Pfeiffer2, D P F Prieur5, W Qian5, D L Rees1, S Rieke3, F Rühr2, D P C Sankey5, U Schäfer3, K Schmitt2, H -C Schultz-Coulon2, C Schumacher2, S Silverstein6, R J Staley1, R Stamen2, M C Stockton1, S Tapprogge3, J P Thomas1, T Trefzger3, P M Watkins1, A Watson1, P Weber2 and E -E Woehrling1
Published 6 March 2008 •
Published under licence by IOP Publishing Ltd
Journal of Instrumentation,
Volume 3,
March 2008
Citation R Achenbach et al 2008 JINST3 P03001DOI 10.1088/1748-0221/3/03/P03001
The ATLAS Level-1 Calorimeter Trigger uses
reduced-granularity information from all the ATLAS calorimeters to
search for high transverse-energy electrons, photons, τ leptons and
jets, as well as high missing and total transverse energy. The
calorimeter trigger electronics has a fixed latency of about 1 μs,
using programmable custom-built digital electronics. This paper
describes the Calorimeter Trigger hardware, as installed in the ATLAS
electronics cavern.