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LHCb Upstream Tracker box: Thermal studies and conceptual design
Umeå University, Faculty of Science and Technology, Department of Physics.
2016 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The LHC (Large Hadron Collider) will have a long shut down in the years of 2019 and 2020, referred to as LS2. During this stop the LHC injector complex will be upgraded to increase the luminosities, which will be the first step of the high luminosity LHC program (which will be realized during LS3 that takes place in 2024-2026). The LHCb experiment, whose main purpose is to study the CP-violation, will during this long stop be upgraded in order to withstand a higher radiation dose, and to be able to read out the detector at a rate of 40MHz,compared to 1MHz at present. This change will improve the trigger efficiency significantly. One of the LHCb sub-detectors the Trigger Tracker (TT), will be replaced by a new sub-detector called UT. This report presents the early stage design (preparation for mock-up building) of the box that will be isolating the new UT detector from the surroundings and to ensure optimal detector operation. Methods to fulfill requirements such as light and gas tightness, Faraday-cage behavior and condensation free temperatures, without breaking the fragile beryllium beam pipe, are established.

Abstract [sv]

LHC (Large Hadron Collider) kommer under åren 2019-2020 att ha ett längre driftstopp. Under detta driftstopp så kommer LHC's injektionsanordningar att uppgraderas för att kunna sätta fler protoner i circulation i LHC, och därmed öka antalet partikelkollisioner per tidsenhet. Denna uppgradering kommer att vara första steget i "High Luminocity LHC"-programmet som kommer att realiseras år 2024-2026. LHCb-experimentet, vars främsta syfte är att studera CP-brott, kommer också att uppgraderas under stoppet 2019-2020. Framför allt så ska avläsningsfrekvensen ökas från dagens 1MHz till 40MHz, och experimentet ska förberedas för de högre strålningsdoser som kommer att bli aktuella efter stoppet 2024-2026. En av LHCb's deldetektorer, TT detektorn, kommer att bytas ut mot en ny deldetektor som kallas UT. Den här rapporten presenterar den förberedande designen av den låda som ska isolera UT från dess omgivning och försäkra optimala förhållanden för detektorn. Kraven på den isolerande lådan och tillvägagångssätt för att uppfylla dessa krav presenteras.

Place, publisher, year, edition, pages
2016. , 106 p.
Keyword [en]
CERN, EP-DT-EO, LHCb, Upstream Tracker, UT, Large Hadron Collider, LHC, High Luminocity LHC, Conceptual design, Thermal studies, Radiation, Conduction, Convection, Structural studies, UT-box, UT-plug, CP-violation, Particle detector, Silicon detector, Particle physics, Composite manufacturing, Polymer manufacturing, 3D-printing, FEA, Finite element analysis, Thermal simulation, Structural simulation, ANSYS, Rigidity testing, Compression test, CAD
National Category
Other Engineering and Technologies not elsewhere specified
URN: urn:nbn:se:umu:diva-116163OAI: diva2:901679
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Subject / course
Examensarbete i teknisk fysik
Educational program
Master of Science Programme in Engineering Physics
2016-01-15, Universitetsklubben, Aula Nordica, Universums gränd 4, 901 87, Umeå, 15:00 (English)
LHCb, LS2 and LS3 Upgrade
Available from: 2016-02-09 Created: 2016-02-08 Last updated: 2016-02-09Bibliographically approved

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