On-line luminosity measurements at LEP | Zendy

Pablo de Oliveira Castro | Zendy; B. Dehning | Zendy; G. Ferri | Zendy; P. Puzo | Zendy

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On-line luminosity measurements at LEP

Author(s) -

Pablo de Oliveira Castro,

B. Dehning,

G. Ferri,

P. Puzo

Publication year - 1997

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.52299

Subject(s) - luminosity , physics , interaction point , detector , line (geometry) , beam (structure) , bunches , point (geometry) , optics , nuclear physics , astrophysics , geometry , mathematics , galaxy

At each LEP interaction point, the luminosity is monitored on-line by small angle Bhabha detectors. These detectors are optimized to observe in all bunches relative luminosity changes in a few seconds. The description of the detectors is given, together with the method used to calculate the luminosity after background correction. Optimization of the LEP performances was done with beam separation scans using the luminosity measurements. Those scans also provide a unique measurement of the vertical beam size at the interaction point.

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