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Titolo:
THE DELPHI MICROVERTEX DETECTOR
Autore:
BINGEFORS N; BORNER H; BOULTER R; CACCIA M; CHABAUD V; DIJKSTRA H; EEROLA P; GROSS E; HORISBERGER R; HUBBELING L; HYAMS B; KARLSSON M; MAEHLUM G; RATZ K; RODITI I; STRAVER J; TRISCHUK W; WEILHAMMER P; DUFOUR Y; BRUCKMAN P; JALOCHA P; KAPUSTA P; TURALA M; ZALEWSKA A; LINDGREN J; ORAVA R; OSTERBERG K; RONNQVIST C; SAARIKKO H; SAARIKKO JP; TUUVA T; DALMAGNE B; BAMBADE P; COUCHOT F; FULDA F; AMERY A; BOOTH PSL; CAMPION AR; MCNULTY R; SMITH NA; ANDREAZZA A; BATTAGLIA M; BIFFI P; BONVICINI V; KUCEWICZ W; MERONI C; REDAELLI N; STOCCHI A; TRONCON C; VEGNI G; DAUNCEY P; MAZZUCATO M; PEGORARO M; PEISERT A; BAUBILLIER M; CHAUVEAU J; DASILVA W; GENAT JF; ROSSEL F; ADYE T; APSIMON R; BIZELL J; DENTON L; KALMUS GE; LIDBURY J; SELLER P; TYNDEL M; DULINSKI W; HUSSON D; LOUNIS A; SCHAEFFER M; TURCHETTA R; BRENNER R; SUNDELL E;
Indirizzi:
CERN CH-1211 GENEVA 23 SWITZERLAND COLL FRANCE,PHYS CORPUSCULAIRE LAB F-75231 PARIS 05 FRANCE INST NUCL PHYS KRAKOW POLAND RES INST HIGH ENERGY PHYS HELSINKI FINLAND LAB ACCELERATEUR LINEAIRE ORSAY FRANCE UNIV LIVERPOOL,DEPT PHYS LIVERPOOL L69 3BX ENGLAND UNIV MILAN,DIPARTIMENTO FIS I-20122 MILAN ITALY UNIV OXFORD OXFORD ENGLAND UNIV PADUA,DIPARTIMENTO FIS I-35100 PADUA ITALY UNIV PARIS 06,LPNHE PARIS FRANCE UNIV PARIS 07,LPNHE F-75221 PARIS 05 FRANCE RUTHERFORD APPLETON LAB DIDCOT OX11 0QX OXON ENGLAND ULP,IN2P3,LEPSI STRASBOURG FRANCE ABO AKAD,DEPT PHYS TURKU FINLAND
Titolo Testata:
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment
fascicolo: 3, volume: 328, anno: 1993,
pagine: 447 - 471
SICI:
0168-9002(1993)328:3<447:TDMD>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
17
Recensione:
Indirizzi per estratti:
Citazione:
N. Bingefors et al., "THE DELPHI MICROVERTEX DETECTOR", Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 328(3), 1993, pp. 447-471

Abstract

The DELPHI Microvertex detector, which has been in operation since the start of the 1990 LEP run, consists of three layers of silicon microstrip detectors at average radii of 6.3, 9.0 and 11.0 cm. The 73 728 readout strips, oriented along the beam, have a total active area of 0.42 m2. The strip pitch is 25 mum and every other strip is read out by low power charge amplifiers, giving a signal to noise ratio of 15:1 for minimum ionizing particles. On-line zero suppression results in an average data size of 4 kbyte for Z0 events. After a mechanical survey and an alignment with tracks, the impact parameter uncertainty as determined from hadronic Z0 decays is well described by square-root 69/p(t))2 + 24(2) mum, with p(t) in GeV/c. For the 45 GeV/c tracks from Z0 --> mu+ mu- decays we find an uncertainty of 21 mum for the impact parameter, which corresponds to a precision of 8 mum per point. The stability during the run is monitored using light spots and capacitive probes. An analysis of tracks through sector overlaps provides an additionalcheck of the stability. The same analysis also results in a value of 6 mum for the intrinsic precision of the detector.

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Documento generato il 04/12/20 alle ore 03:58:11