Forward detectors and luminosity measurements
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2015-11-06 |
| Authors | G. Chiodini |
| Institutions | Istituto Nazionale di Fisica Nucleare, Sezione di Lecce |
Abstract
Section titled āAbstractāThis paper discusses the challenge related to luminosity and forward physics measurements at ATLAS and CMS experiments after the scheduled LHC luminosity upgrades.The topics covered are not at all exhaustive of the subject but focus on activities where italian groups are involved.In addition, the author research interest in fast timing detector with tracking capability is the guiding principle of the report.Particular emphasis is given to the need of upgrading the existing detectors, in term of granularity and radiation resistance, and of pushing state-of-the-art technology to add fast timing to tracking information in the same device.Two Cherenkov based detectors for luminosity measurement (LUCID for ATLAS) and beam background monitoring (HBM for CMS) are briefly described as examples of systems placed far from the beams.Instead, near the beams, solid state devices, such as diamond detectors, are employed for luminosity measurements.In this respect, the evolution from particle counting mode to tracking mode configurations (DBM for ATLAS and PLT for CMS) is emblematic of the paradigmatic change of view needed to cope with high pile-up.The ambitious goal of forward detectors to take data in normal run condition, in order to accumulate statistics for precision EW coupling measurements and search for BSM heavy objects, is delineated.The need to develop new sensors and electronic chains to achieve very good time resolution is illustrated.The effort on diamond detectors capable to replace Cherenkov based timing detector for forward physics is clearly stated.The report concludes depicting one of the most promising new technology intended to face the challenge of a device with hundreds of micron space resolution and tens of ps time resolution: the Ultra Fast Silicon Detector (UFSD).