THE H1 LEAD SCINTILLATING-FIBER CALORIMETER

Authors
APPUHN RD ARNDT C BARRELET E BARSCHKE R BASSLER U BOUDRY V BUCHHOLZ R BRASSE F BRUNCKO D CHECHELNITSKI S CLAXTON B COZZIKA G CVACH J DAGORETCAMPAGNE S DAU WD DECKERS H DECKERS T DESCAMPS F DIRKMANN M DOWDELL J EFREMENKO V EISENHANDLER E ELISEEV AN FALLEY G FERENCEI J FOMINYKH B GADOW K GOERLACH U GORBOV LA GORELOV I GREWE M HAJDUK L HERYNEK I HLADKY J HUTTE M HUTTER H JANCZUR W JANOTH J JONSSON L KOLANOSKI H KORBEL V KRIVAN F LACOUR D LAMARCHE F LANDON MPJ LAFORGE B LAPORTE JF LEHNER F MARACEK R MEIER K MEYER A MIGLIORI A MOREAU F MULLER G MURIN P NAGOVIZIN V NICHOLLS TC OZEROV D PEREZ E PHARABOD JP POSCHL R RYBICKI K ROSTOVTSEV A ROYON C SCHLEIF S SCHUHMACHER A SEMENOV A SHEKELYAN V SIROIS Y SMIRNOV PA SOLOCHENKO V SPALEK J SPIELMANN S STEINER H STIEWE J TASEVSKY M TCHERNYSHOV V THIELE K TZAMARIUDAKI E VALKAR S VANDENPLAS D VILLET G WACKER K WALTHER A WEBER M WEGENER D WENK T ZACEK J ZHOKIN A ZUBER K
Citation
Rd. Appuhn et al., THE H1 LEAD SCINTILLATING-FIBER CALORIMETER, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 386(2-3), 1997, pp. 397-408
Citations number
41
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
386
Issue
2-3
Year of publication
1997
Pages
397 - 408
Database
ISI
SICI code
0168-9002(1997)386:2-3<397:THLSC>2.0.ZU;2-R
Abstract
The backward region of the H1 detector has been upgraded in order to p rovide improved measurement of the scattered electron in deep inelasti c scattering events. The centerpiece of the upgrade is a high-resoluti on lead/scintillating-fibre calorimeter. The main design goals of the calorimeter are: good coverage of the region close to the beam pipe, h igh angular resolution and energy resolution of better than 2% for 30 GeV electrons. The calorimeter should be capable of providing coarse h adronic energy measurement and precise time information to suppress ou t-of-time background events at the first trigger level. It must be com pact due to space restrictions. These requirements were fulfilled by c onstructing two separate calorimeter sections. The inner electromagnet ic section is made of 0.5 mm scintillating plastic fibres embedded in a lead matrix. Its lead-to-fibre ratio is 2.3:1 by volume. The outer h adronic section consists of 1.0 mm diameter fibres with a lead-to-fibr e ratio of 3:4:1. The mechanical construction of the new calorimeter a nd its assembly in the H1 detector are described.