The ATLAS SCT grounding and shielding concept and implementation
2012 (English)In: Journal of Instrumentation, ISSN 1748-0221, Vol. 7, P03005- p.Article in journal (Refereed) Published
This paper describes the design and implementation of the grounding and shielding system for the ATLAS SemiConductor Tracker (SCT). The mitigation of electromagnetic interference and noise pickup through power lines is the critical design goal as they have the potential to jeopardize the electrical performance. We accomplish this by adhering to the ATLAS grounding rules, by avoiding ground loops and isolating the different subdetectors. Noise sources are identified and design rules to protect the SCT against them are described. A rigorous implementation of the design was crucial to achieve the required performance. This paper highlights the location, connection and assembly of the different components that affect the grounding and shielding system: cables, filters, cooling pipes, shielding enclosure, power supplies and others. Special care is taken with the electrical properties of materials and joints. The monitoring of the grounding system during the installation period is also discussed. Finally, after connecting more than four thousand SCT modules to all of their services, electrical, mechanical and thermal within the wider ATLAS experimental environment, dedicated tests show that noise pickup is minimised.
Place, publisher, year, edition, pages
2012. Vol. 7, P03005- p.
Si microstrip and pad detectors, Large detector systems for particle and astroparticle physics, Detector grounding
IdentifiersURN: urn:nbn:se:uu:diva-175864DOI: 10.1088/1748-0221/7/03/P03005ISI: 000304015300053OAI: oai:DiVA.org:uu-175864DiVA: diva2:533337