Skip to main content
Home
Department Of Physics text logo
  • Research
    • Our research
    • Our research groups
    • Our research in action
    • Research funding support
    • Summer internships for undergraduates
  • Study
    • Undergraduates
    • Postgraduates
  • Engage
    • For alumni
    • For business
    • For schools
    • For the public
Menu
Largest layer of SCT barrel detector

The largest radius layer of the SCT barrel detector after all SCT modules had been mounted in a clean room in the physics department.

Professor Tony Weidberg

Senior Researcher

Research theme

  • Fundamental particles and interactions

Sub department

  • Particle Physics

Research groups

  • ATLAS
Tony.Weidberg@physics.ox.ac.uk
Telephone: 01865 (2)73370
Denys Wilkinson Building, room 629
  • About
  • Publications

Radiation hardness studies of VCSELs and PINS for the opto-links of the Atlas SemiConductor Tracker

NUCL INSTRUM METH A 579:2 (2007) 795-800

Authors:

ML Chu, S Hou, T Huffman, C Issever, SC Lee, RS Lu, DS Su, PK Teng, AR Weidberg

Abstract:

We study the radiation hardness of the Vertical Cavity Surface Emitting Laser diodes (VCSELs) and the epitaxial silicon PIN diodes that will be used for the Atlas SemiConductor Tracker at the CERN Large Hadron Collider. The tests were conducted with 200 MeV protons to a fluence of 4 x 10(14) p/cm(2) and with 20 MeV (average energy) neutrons to 7.7 x 10(14) n/cm(2). The radiation damage of the VCSELs and PINs and the annealing characteristics are presented. (c) 2007 Elsevier B.V. All rights reserved.
More details from the publisher

Radiation hardness studies of VCSELs and PINs for the opto-links of the Atlas SemiConductor Tracker

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 579:2 SPEC. ISS. (2007) 795-800

Authors:

ML Chu, S Hou, T Huffman, C Issever, SC Lee, RS Lu, DS Su, PK Teng, AR Weidberg

Abstract:

We study the radiation hardness of the Vertical Cavity Surface Emitting Laser diodes (VCSELs) and the epitaxial silicon PIN diodes that will be used for the Atlas SemiConductor Tracker at the CERN Large Hadron Collider. The tests were conducted with 200 MeV protons to a fluence of 4 × 1014 p / cm2 and with 20 MeV (average energy) neutrons to 7.7 × 1014 n / cm2. The radiation damage of the VCSELs and PINs and the annealing characteristics are presented. © 2007 Elsevier B.V. All rights reserved.
More details from the publisher

The ATLAS semiconductor tracker end-cap module

Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 575:3 (2007) 353-389

Authors:

A Abdesselam, PJ Adkin, PP Allport, J Alonso, L Andricek, F Anghinolfi, AA Antonov, RJ Apsimon, T Atkinson, LE Batchelor, RL Bates, G Beck, H Becker, P Bell, W Bell, P Beneš, J Bernabeu, S Bethke, JP Bizzell, J Blocki, Z Broklová, J Brož, J Bohm, P Booker, G Bright, TJ Brodbeck, P Bruckman, CM Buttar, JM Butterworth, F Campabadal, D Campbell, C Carpentieri, JL Carroll, AA Carter, JR Carter, GL Casse, P Čermák, M Chamizo, DG Charlton, A Cheplakov, E Chesi, A Chilingarov, S Chouridou, D Chren, A Christinet, ML Chu, V Cindro, A Ciocio, JV Civera, A Clark, AP Colijn, PA Cooke, MJ Costa, D Costanzo, W Dabrowski, KM Danielsen, VR Davies, I Dawson, P de Jong, P Dervan, F Doherty, Z Doležal, M Donega, M D'Onofrio, O Dorholt, Z Drásal, JD Dowell, IP Duerdoth, R Duxfield, M Dwuznik, JM Easton, S Eckert, L Eklund, C Escobar, V Fadeyev, D Fasching, L Feld, DPS Ferguson, P Ferrari, D Ferrere, C Fleta, R Fortin, JM Foster, C Fowler, H Fox, J Freestone, RS French, J Fuster, S Gadomski, BJ Gallop, C García, JE García-Navarro, S Gibson, MGD Gilchriese, F Gonzalez, S Gonzalez-Sevilla, MJ Goodrick, A Gorisek, E Gornicki, A Greenall

Abstract:

The 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 μ s buffer. The highest anticipated dose after 10 years operation is 1.4 × 1014 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 ∼ 70 cm2, each having 2 × 768 strips read out by six ASICs per side. The requirement to achieve an average perpendicular radiation length of 1.5% X0, while coping with up to 7 W dissipation per module (after irradiation), leads to stringent constraints on the thermal design. The additional requirement of 1500 e- equivalent noise charge (ENC) rising to only 1800 e- 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 μ m (r φ) resolution perpendicular to the strip directions or 580 μ m 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. © 2007 Elsevier B.V. All rights reserved.
More details from the publisher

The ATLAS semiconductor tracker end-cap module

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 575:3 (2007) 353-389

Authors:

A Abdesselam, PJ Adkin, PP Allport, J Alonso, L Andricek, F Anghinolfi, AA Antonov, RJ Apsimon, T Atkinson, LE Batchelor, RL Bates, G Beck, H Becker, P Bell, W Bell, P Benes, J Bernabeu, S Bethke, JP Bizzell, J Blocki, Z Broklova, J Broz, J Bohm, P Booker, G Bright, TJ Brodbeck, P Bruckman, CM Buttari, JM Butterworth, F Campabadal, D Campbell, C Carpentier, JL Carroll, AA Carter, JR Carter, GL Casse, P Cermak, M Chamizo, DG Charlton, A Cheplakov, E Chesi, A Chilingarov, S Chouridou, D Chren, A Christinet, ML Chu, V Cindro, A Clocio, JV Civera, A Clark, AP Colijn, PA Cooke, MJ Costa, D Costanzo, W Dabrowski, KM Danielsen, VR Davies, I Dawson, P de Jong, P Dervan, F Doherty, Z Dolezal, M Donega, M D'Onofrio, O Dorholt, Z Drasal, JD Dowell, IP Duerdoth, R Duxfield, M Dwuznik, JM Easton, S Eckert, L Eklund, C Escobar, V Fadeyev, D Fasching, L Feld, DPS Ferguson, P Ferrari, D Ferrere, C Fleta, R Fortin, JM Foster, C Fowler, H Fox, J Freestone, RS French, J Fuster, S Gadomski, BJ Gallop, C Garcia, JE Garcia-Navarro, S Gibson, MGD Gilchriese, F Gonzalez, S Gonzalez-Sevilla, MJ Goodrick, A Gorisek, E Gornicki, A Greenall, D Greenfield, S Gregory, IG Grigorieva, AA Grillo, J Grosse-Knetter, C Gryska, A Guipet, C Haber, K Hara, FG Hartjes, D Hauff, SJ Haywood, SJ Hegeman, K Heinzinger, NP Hessey, C Heusch, A Hicheur, JC Hill, M Hodgkinson, P Hodgson, T Horazdovsky, TI Hollins, LS Hou, S Hou, G Hughes, T Huse, M Ibbotson, M Iglesias, Y Ikegami, I Ilyashenko, C Issever, JN Jackson, K Jakobs, RC Jared, P Jarron, P Johansson, RWL Jones, TJ Jones, D Joos, J Joseph, P Jovanovic, O Jusko, V Jusko, J Kaplon, S Kazi, Ch Ketterer, AG Kholodenko, BT King, P Kodys, E Koffeman, Z Kohout, T Kohriki, T Kondo, S Koperny, H Koukol, V Kral, G Kramberger, P Kubik, J Kudlaty, C Lacasta, T Lagouri, SC Lee, K Leney, S Lenz, CG Lester, K Liebicher, M Limper, S Lindsay, V Linhart, G Llosa, FK Loebinger, M Lozano, I Ludwig, J Ludwig, G Lutz, J Lys, M Maassen, D Macina, A Macpherson, C MacWaters, CA Magrath, P Malecki, I Mandic, M Mangin-Brinet, S Marti-Garcia, JP Matheson, RM Matson, SJ McMahon, TJ McMahon, J Meinhardt, B Mellado, JJ Melone, IJ Mercer, I Messmer, B Mikulec, M Mikuz, M Minano, VA Mitsou, P Modesto, S Moed, B Mohn, S Moncrieff, G Moorhead, FS Morris, J Morris, M Morrissey, HG Moser, A Moszczynski, AJM Muijs, WJ Murray, D Muskett, J Nacher, K Nagai, I Nakano, RB Nickerson, R Nisius, OK Oye, V O'Shea, E Paganis, MA Parker, U Parzefall, JR Pater, SJM Peeters, G Pellegrini, G Pelleriti, H Pernegger, E Perrin, PW Phillips, LV Pilavova, K Poltorak, S Pospisil, M Postranecky, T Pritchard, K Prokofiev, JM Rafi, C Raine, PN Ratoff, P Reznicek, VN Riadovikov, RH Richter, A Robichaud-Veronneau, D Robinson, R Rodriguez-Oliete, S Roe, A Rudge, K Runge, A Saavedra, HFW Sadrozinski, FJ Sanchez, H Sandaker, DH Saxon, D Scheirich, J Schieck, A Seiden, A Sfyrla, T Slavicek, KM Smith, NA Smith, SW Snow, M Solar, B Sopko, V Sopko, L Sospedra, E Spencer, E Stanecka, S Stapnes, J Stastny, V Strachko, A Stradling, B Stugu, DS Su, P Sutcliffe, R Szczygiel, R Tanaka, G Taylor, PK Teng, S Terada, RJ Thompson, M Titov, B Toczek, DR Tovey, G Tratzl, VL Troitsky, J Tseng, M Turala, PR Turner, M Tyndel, M Ullan, Y Unno, T Vickey, E Van der Kraaij, G Viehhauser, EG Villani, T Vitek, T Vu Anh, AP Vorobiev, JH Vossebeld, M Wachler, R Wallny, CP Ward, MRM Warren, M Webel, M Weber, M Weber, AR Weidberg, P Weilhammer, PS Wells, P Wetzel, M Whitley, M Wiesmann, I Wilhelm, M Willenbrock, I Wilmut, JA Wilson, J Winton, M Wolter, MP Wormald, SL Wu, X Wu, H Zhu, N Bingefors, R Brenner, T Ekelof
More details from the publisher

The optical links of the ATLAS SemiConductor tracker

JOURNAL OF INSTRUMENTATION 2 (2007) ARTN P09003

Authors:

JA Wilson, A Abdesselam, PP Allport, RJ Apsimon, C Band, AJ Barr, L Batchelor, R Bates, P Bell, J Bernabeu, J Bizzell, R Brenner, T Brodbeck, P Bruckman de Renstrom, C Buttar, JR Carter, DG Charlton, A Cheplakov, A Chilingarov, ML Chu, A-P Colijn, I Dawson, B Demirkoz, P De Jong, PJ Dervan, Z Dolezal, JD Dowell, C Escobar, E Spencer, T Ekelof, L Eklund, D Ferrere, TJ Fraser, M French, R French, J Fuster, BJ Gallop, C Garcia, MJ Goodrick, A Greenall, AA Grillo, J Grosse-Knetter, F Hartjes, NP Hessey, JC Hill, RJ Homer, LS Hou, G Hughes, Y Ikegami, C Issever, JN Jackson, M Jones, TJ Jones, P Jovanovic, E Koffeman, P Kodys, T Kohriki, S-C Lee, CG Lester, M Limper, SW Lindsay, M Lozano, CP Macwaters, CA Magrath, G Mahout, I Mandic, J Matheson, TJ McMahon, B Mikulec, AJM Muijs, M Morrissey, A Nichols, RB Nickerson, V O'Shea, S Pagenis, MA Parker, J Pater, E Perrin, H Pernegger, SJM Peeters, PW Phillips, M Postranecky, D Robinson, A Robson, A Rudge, H Sandaker, K Sedlak, NA Smith, S Stapnes, B Stugu, PK Teng, S Terada, A Tricoli, M Tyndel, N Ujiie, M Ulln, Y Unno, E van der Kraaij, I van Vulpen, G Viehhauser, JH Vossebeld, MRM Warren, RL Wastie, AR Weidberg, PS Wells, DJ Whitet
More details from the publisher

Pagination

  • First page First
  • Previous page Prev
  • …
  • Page 75
  • Page 76
  • Page 77
  • Page 78
  • Current page 79
  • Page 80
  • Page 81
  • Page 82
  • Page 83
  • …
  • Next page Next
  • Last page Last

Footer Menu

  • Contact us
  • Giving to the Dept of Physics
  • Work with us
  • Media

User account menu

  • Log in

Follow us

FIND US

Clarendon Laboratory,

Parks Road,

Oxford,

OX1 3PU

CONTACT US

Tel: +44(0)1865272200

University of Oxfrod logo Department Of Physics text logo
IOP Juno Champion logo Athena Swan Silver Award logo

© University of Oxford - Department of Physics

Cookies | Privacy policy | Accessibility statement

Built by: Versantus

  • Home
  • Research
  • Study
  • Engage
  • Our people
  • News & Comment
  • Events
  • Our facilities & services
  • About us
  • Current students
  • Staff intranet