CERN Accelerating science

CMS Note
Report number CMS-NOTE-2008-010
Title Design, Performance, and Calibration of CMS Hadron Endcap Calorimeters
Author(s)

Baiatian, G ; Sirunyan, Albert M ; Emeliantchik, Igor ; Massolov, V ; Shumeiko, Nikolai ; Stefanovich, R ; Damgov, Jordan ; Dimitrov, Lubomir ; Genchev, Vladimir ; Piperov, Stefan ; Vankov, Ivan ; Litov, Leander ; Bencze, Gyorgy ; Laszlo, Andras ; Pal, Andras ; Vesztergombi, Gyorgy ; Zálán, Peter ; Fenyvesi, Andras ; Bawa, Harinder Singh ; Beri, Suman Bala ; Bhatnagar, Vipin ; Kaur, Manjit ; Kohli, Jatinder Mohan ; Kumar, Arun ; Singh, Jas Bir ; Acharya, Bannaje Sripathi ; Banerjee, Sunanda ; Banerjee, Sudeshna ; Chendvankar, Sanjay ; Dugad, Shashikant ; Kalmani, Suresh Devendrappa ; Katta, S ; Mazumdar, Kajari ; Mondal, Naba Kumar ; Nagaraj, P ; Patil, Mandakini Ravindra ; Reddy, L ; Satyanarayana, B ; Sharma, Seema ; Sudhakar, Katta ; Verma, Piyush ; Hashemi, Majid ; Mohammadi-Najafabadi, M ; Paktinat, S ; Babich, Kanstantsin ; Golutvin, Igor ; Kalagin, Vladimir ; Kamenev, Alexey ; Konoplianikov, V ; Kosarev, Ivan ; Moissenz, K ; Moissenz, P ; Oleynik, Danila ; Petrosian, A ; Rogalev, Evgueni ; Semenov, Roman ; Sergeyev, S ; Shmatov, Sergey ; Smirnov, Vitaly ; Vishnevskiy, Alexander ; Volodko, Anton ; Zarubin, Anatoli ; Druzhkin, Dmitry ; Ivanov, Alexander ; Kudinov, Vladimir ; Orlov, Alexandre ; Smetannikov, Vladimir ; Gavrilov, Vladimir ; Gershtein, Yuri ; Ilyina, N ; Kaftanov, Vitali ; Kisselevich, I ; Kolossov, V ; Krokhotin, Andrey ; Kuleshov, Sergey ; Litvintsev, Dmitri ; Ulyanov, A ; Safronov, Grigory ; Semenov, Sergey ; Stolin, Viatcheslav ; Demianov, A ; Gribushin, Andrey ; Kodolova, Olga ; Petrushanko, Sergey ; Sarycheva, Ludmila ; Teplov, V ; Vardanyan, Irina ; Yershov, A ; Abramov, Victor ; Goncharov, Petr ; Kalinin, Alexey ; Khmelnikov, Alexander ; Korablev, Andrey ; Korneev, Yury ; Krinitsyn, Alexander ; Kryshkin, V ; Lukanin, Vladimir ; Pikalov, Vladimir ; Ryazanov, Anton ; Talov, Vladimir ; Turchanovich, L ; Volkov, Alexey ; Camporesi, Tiziano (CERN) ; de Visser, Theo (CERN) ; Vlassov, E (CERN) ; Aydin, Sezgin ; Bakirci, Mustafa Numan ; Cerci, Salim ; Dumanoglu, Isa ; Eskut, Eda ; Kayis-Topaksu, A ; Koylu, S ; Kurt, Pelin ; Onengüt, G ; Ozkurt, Halil ; Polatoz, A ; Sogut, Kenan ; Topakli, Huseyin ; Vergili, Mehmet ; Yetkin, Taylan ; Cankoc, K ; Esendemir, Akif ; Gamsizkan, Halil ; Güler, M ; Ozkan, Cigdem ; Sekmen, Sezen ; Serin-Zeyrek, M ; Sever, Ramazan ; Yazgan, Efe ; Zeyrek, Mehmet ; Deliomeroglu, Mehmet ; Gülmez, Erhan ; Isiksal, Engin ; Kaya, Mithat ; Ozkorucuklu, Suat ; Levchuk, Leonid ; Sorokin, Pavel ; Grynev, B ; Lyubynskiy, Vadym ; Senchyshyn, Vitaliy ; Hauptman, John M ; Abdullin, Salavat ; Elias, John E ; Elvira, D ; Freeman, Jim ; Green, Dan ; Los, Serguei ; ODell, V ; Ronzhin, Anatoly ; Suzuki, Ichiro ; Vidal, Richard ; Whitmore, Juliana ; Arcidy, M ; Hazen, Eric ; Heering, Arjan Hendrix ; Lawlor, C ; Lazic, Dragoslav ; Machado, Emanuel ; Rohlf, James ; Varela, F ; Wu, Shouxiang ; Baden, Drew ; Bard, Robert ; Eno, Sarah Catherine ; Grassi, Tullio ; Jarvis, Chad ; Kellogg, Richard G ; Kunori, Shuichi ; Mans, Jeremy ; Skuja, Andris ; Podrasky, V ; Sanzeni, Christopher ; Winn, Dave ; Akgun, Ugur ; Ayan, S ; Duru, Firdevs ; Merlo, Jean-Pierre ; Mestvirishvili, Alexi ; Miller, Michael ; Norbeck, Edwin ; Olson, Jonathan ; Onel, Yasar ; Schmidt, Ianos ; Akchurin, Nural ; Carrell, Kenneth Wayne ; Gusum, K ; Kim, Heejong ; Spezziga, Mario ; Thomas, Ray ; Wigmans, Richard ; Baarmand, Marc M ; Mermerkaya, Hamit ; Ralich, Robert ; Vodopiyanov, Igor ; Kramer, Laird ; Linn, Stephan ; Markowitz, Pete ; Cushman, Priscilla ; Ma, Yousi ; Sherwood, Brian ; Cremaldi, Lucien Marcus ; Reidy, Jim ; Sanders, David A ; Karmgard, Daniel John ; Ruchti, Randy ; Fisher, Wade Cameron ; Tully, Christopher ; Bodek, Arie ; De Barbaro, Pawel ; Budd, Howard ; Chung, Yeon Sei ; Haelen, T ; Hagopian, Sharon ; Hagopian, Vasken ; Johnson, Kurtis F ; Barnes, Virgil E ; Laasanen, Alvin T

Submitted by 20 Mar 2008
Subject category Detectors and Experimental Techniques
Accelerator/Facility, Experiment CERN LHC ; CMS
Free keywords CALORIMETRY ; HCAL
Abstract Detailed measurements have been made with the CMS hadron calorimeter endcaps (HE) in response to beams of muons, electrons, and pions. Readout of HE with custom electronics and hybrid photodiodes (HPDs) shows no change of performance compared to readout with commercial electronics and photomultipliers. When combined with lead-tungstenate crystals, an energy resolution of 8\% is achieved with 300 GeV/c pions. A laser calibration system is used to set the timing and monitor operation of the complete electronics chain. Data taken with radioactive sources in comparison with test beam pions provides an absolute initial calibration of HE to approximately 4\% to 5\%.
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