Publication

LHCb PLUME: Probe for LUminosity MEasurement

2021
Reports

Abstract

A new dedicated luminometer PLUME, based on registering Cherenkov light produced in quartz material by particles coming upstream from the collision region, is designed for the LHCb operation in Run 3. It will deliver online luminosity and number of visible interactions per bunch crossing measurements for the luminosity levelling, also per bunch, measure the radiation background induced by the accelerator or poor quality vacuum, produce alarms, measure the level of the ghost charges, cross-check the LHC filling scheme in real time, contribute to the centrality determination in the fixed-target programme, and provide accurate offline luminosity determination.

Official source

https://infoscience.epfl.ch/entities/publication/42de9944-d5e1-4a6a-b68b-eb200351d5c6

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2021
Reports

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/42de9944-d5e1-4a6a-b68b-eb200351d5c6

About this result

Related concepts (32)

Luminosity

Luminosity is an absolute measure of radiated electromagnetic power (light), the radiant power emitted by a light-emitting object over time. In astronomy, luminosity is the total amount of electromagnetic energy emitted per unit of time by a star, galaxy, or other astronomical objects. In SI units, luminosity is measured in joules per second, or watts. In astronomy, values for luminosity are often given in the terms of the luminosity of the Sun, L⊙.

Background radiation

Background radiation is a measure of the level of ionizing radiation present in the environment at a particular location which is not due to deliberate introduction of radiation sources. Background radiation originates from a variety of sources, both natural and artificial. These include both cosmic radiation and environmental radioactivity from naturally occurring radioactive materials (such as radon and radium), as well as man-made medical X-rays, fallout from nuclear weapons testing and nuclear accidents.

Ionizing radiation

Ionizing radiation (or ionising radiation), including nuclear radiation, consists of subatomic particles or electromagnetic waves that have sufficient energy to ionize atoms or molecules by detaching electrons from them. Some particles can travel up to 99% of the speed of light, and the electromagnetic waves are on the high-energy portion of the electromagnetic spectrum. Gamma rays, X-rays, and the higher energy ultraviolet part of the electromagnetic spectrum are ionizing radiation, whereas the lower energy ultraviolet, visible light, nearly all types of laser light, infrared, microwaves, and radio waves are non-ionizing radiation.

Related publications (32)

LHCb PLUME: Probe for LUminosity MEasurement

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Measurement of the W → μν cross-sections as a function of the muon transverse momentum in pp collisions at 5.02 TeV

What You See Is What You Get: Empirically Measured Bolometric Luminosities of Little Red Dots

Search for Heavy Neutral Leptons in three prompt leptons final states with at least one hadronic tau at the CMS Experiment