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Luminosity calculation and threshold scan for the VeloPix ASICs

During my summer project I calculated the rates of the MonB counters from the VeloPix ASICs. Using these rates, I then studied the luminosity of the collisions in the LHCb detector. Studying archiving of the MonB data from past runs we realized that the rates and luminosity have a linear relation an...

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Detalles Bibliográficos
Autor principal: Girard, Lea
Lenguaje:eng
Publicado: 2023
Materias:
Acceso en línea:http://cds.cern.ch/record/2876930
Descripción
Sumario:During my summer project I calculated the rates of the MonB counters from the VeloPix ASICs. Using these rates, I then studied the luminosity of the collisions in the LHCb detector. Studying archiving of the MonB data from past runs we realized that the rates and luminosity have a linear relation and the linear fit parameters can be used to calculate luminosity in real time. Secondly, the VELO team has a goal of setting up all of the ASIC DAC thresholds so that the noise rates are all close to a goal rate. I developed an algorithm to set these thresholds automatically in a single scan.