Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/8526
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

The ATLAS semiconductor tracker end-cap module

AuthorsFleta, Celeste; Martí García, Salvador CSIC ORCID; Lacasta Llácer, Carlos CSIC ORCID ; Fuster, Juan CSIC ORCID; Rafí, J.M. CSIC ORCID ; García García, Carmen CSIC ORCID; Stugu, Bjarne; Mellado, Bruce; Bernabeu Verdú, José CSIC ORCID; García Navarro, José Enrique CSIC ORCID; Ullán Comes, Miguel ; González González, Francisco; González Sevilla, Sergio CSIC; Modesto, Pablo; Campabadal, Francesca; Llosá, Gabriela CSIC ORCID; Lozano Fantoba, Manuel CSIC ORCID ; Costa, María José CSIC ORCID; Escobar, Carlos CSIC ORCID ; Pellegrini, Giulio; Rodríguez Oliete, Rosario; Sánchez Martínez, Javier CSIC ORCID; Strachko, V.; Civera, José Vicente CSIC; Miñano, Mercedes CSIC ORCID; Oye, O. K.; Sospedra, Luis CSIC
KeywordsSilicon
Module
Microstrip
ATLAS
SCT
LHC
[PACS] Tracking and position-sensitive detectors
[PACS] Solid-state detectors
Issue Date28-Feb-2007
PublisherElsevier
CitationNuclear Instruments & Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 575(3): 353-389 (2007)
AbstractThe challenges for the tracking detector systems at the LHC are unprecedented in terms of the number of channels, the required read-out speed and the expected radiation levels. The ATLAS Semiconductor Tracker (SCT) end-caps have a total of about 3 million electronics channels each reading out every 25 ns into its own on-chip 3.3 μs buffer. The highest anticipated dose after 10 years operation is 1.4x10(14) cm(-2) in units of 1 MeV neutron equivalent (assuming the damage factors scale with the non-ionising energy loss). The forward tracker has 1976 double-sided modules, mostly of area similar to 70 cm(2), each having 2 x 768 strips read out by six ASICs per side. The requirement to achieve an average perpendicular radiation length of 1.5% X-0, while coping with up to 7 W dissipation per module (after irradiation), leads to stringent constraints on the thermal design. The additional requirement of 1500e(-) equivalent noise charge (ENC) rising to only 1800e(-) ENC after irradiation, provides stringent design constraints on both the high-density Cu/Polyimide flex read-out circuit and the ABCD3TA read-out ASICs. Finally, the accuracy of module assembly must not compromise the 16 μm (rΦ) resolution perpendicular to the strip directions or 580 μm radial resolution coming from the 40 mrad front-back stereo angle. A total of 2210 modules were built to the tight tolerances and specifications required for the SCT. This was 234 more than the 1976 required and represents a yield of 93%. The component flow was at times tight, but the module production rate of 40-50 per week was maintained despite this. The distributed production was not found to be a major logistical problem and it allowed additional flexibility to take advantage of where the effort was available, including any spare capacity, for building the end-cap modules. The collaboration that produced the ATLAS SCT end-cap modules kept in close contact at all times so that the effects of shortages or stoppages at different sites could be rapidly resolved.
Description37 pages, 43 figures.-- PACS nrs.: 29.40.Gx; 29.40.Wk.-- ISI Article Identifier: 000247146800010.-- et al.
Publisher version (URL)http://dx.doi.org/10.1016/j.nima.2007.02.019
URIhttp://hdl.handle.net/10261/8526
DOI10.1016/j.nima.2007.02.019
ISSN0168-9002
Appears in Collections:(IMB-CNM) Artículos
(IFIC) Artículos

Show full item record
Review this work

SCOPUSTM   
Citations

72
checked on Jan 17, 2022

WEB OF SCIENCETM
Citations

60
checked on Jan 19, 2022

Page view(s)

558
checked on Jan 20, 2022

Google ScholarTM

Check

Altmetric

Dimensions


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.