| ATLAS Slides | |
| Report number | ATL-ITK-SLIDE-2018-007 |
| Title | First bulk and surface results for the ATLAS ITk stereo annulus sensors |
| Author(s) |
Abidi, Syed Haider (Department of Physics, University of Toronto) ; Affolder, Tony (Santa Cruz Institute for Particle Physics, University of California Santa Cruz) ; Bohm, Jan (Academy of Sciences of the Czech Republic, Institute of Physics) ; Botte, James Michael (Carleton University) ; Ciungu, Bianca (Department of Physics, University of Toronto) ; Dette, Karola (Department of Physics, University of Toronto) ; Dolezal, Zdenek (Charles University, Faculty of Mathematics and Physics, Prague) ; Escobar, Carlos (Instituto de Fisica Corpuscular (IFIC), Centro Mixto Universidad de Valencia - CSIC) ; Fadeyev, Vitaliy (Santa Cruz Institute for Particle Physics, University of California Santa Cruz) ; Fernandez-Tejero, Xavi (Consejo Superior de Investigaciones Cientificas (CSIC) (ES)) ; Garcia-Argos, Carlos (Albert-Ludwigs-Universitaet Freiburg) ; Gillberg, Dag (Carleton University) ; Hara, Kazuhiko (Faculty of Pure and Applied Sciences, and Center for Integrated Research in Fundamental Science and Engineering, University of Tsukuba) ; Hunter, Robert Francis Holub (Carleton University) ; Keller, John (Carleton University) ; Kodys, Peter (Charles University, Faculty of Mathematics and Physics, Prague) ; Koffas, Thomas (Carleton University) ; Kotek, Zdenek (Academy of Sciences of the Czech Republic, Institute of Physics) ; Kroll, Jiri (Academy of Sciences of the Czech Republic, Institute of Physics) ; Lacasta, Carlos (Instituto de Fisica Corpuscular (IFIC), Centro Mixto Universidad de Valencia - CSIC) ; Latonova, Vera (Charles University, Faculty of Mathematics and Physics, Prague) ; Loenker, Jonas (Fakultaet Physik, Technische Universitaet Dortmund, Dortmund) ; Madaffari, Daniele (Instituto de Fisica Corpuscular (IFIC), Centro Mixto Universidad de Valencia - CSIC) ; Mikestikova, Marcela (Academy of Sciences of the Czech Republic, Institute of Physics) ; Minano Moya, Mercedes (Univ. of Valencia and CSIC (ES)) ; Ng, Sam Yanwing (Humboldt University Berlin) ; Orr, Robert (Department of Physics, University of Toronto) ; Rodriguez Rodriguez, Daniel (Instituto de Fisica Corpuscular (IFIC), Centro Mixto Universidad de Valencia - CSIC) ; Soldevila, Urmila (Instituto de Fisica Corpuscular (IFIC), Centro Mixto Universidad de Valencia - CSIC) ; Stastny, Jan (Academy of Sciences of the Czech Republic, Institute of Physics) ; Stegler, Martin (DESY, Hamburg and Zeuthen) ; Suzuki, Junki (Faculty of Pure and Applied Sciences, and Center for Integrated Research in Fundamental Science and Engineering, University of Tsukuba) ; Teuscher, Richard (Department of Physics, University of Toronto) ; Unno, Yoshinobu (KEK, High Energy Accelerator Research Organization) ; Wada, Sayaka (Faculty of Pure and Applied Sciences, and Center for Integrated Research in Fundamental Science and Engineering, University of Tsukuba) ; Wizemann, Felix (Fakultaet Physik, Technische Universitaet Dortmund, Dortmund) ; Zahradnik, Vit (Academy of Sciences of the Czech Republic, Institute of Physics) |
| Corporate author(s) | The ATLAS collaboration |
| Submitted to | 11th International "Hiroshima" Symposium on the Development and Application of Semiconductor Tracking Detectors (HSTD11) in conjunction with 2nd Workshop on SOI Pixel Detectors (SOIPIX2017) at OIST, Okinawa, Japan, Okinawa, Japan, 10 - 15 Dec 2017 |
| Submitted by | [email protected] on 03 Jan 2018 |
| Subject category | Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CERN LHC ; ATLAS |
| Free keywords | Technologies, ; Strip sensors, ; Large scale applications, ; New ideas and future applications |
| Abstract | A novel microstrip sensor geometry, the “stereo annulus”, has been developed for use in the end-cap of the ATLAS experiment’s strip tracker upgrade at the High-Luminosity Large Hadron Collider (HL- LHC). The radiation-hard, single-sided, ac-coupled, n + -in-p microstrip sensors are designed by the ITk Strip Sensor Collaboration and produced by Hamamatsu Photonics. The stereo annulus design has the potential to revolutionize the layout of end-cap microstrip trackers promising better tracking performance and more complete coverage than the contemporary configurations. These advantages are achieved by the union of equal length, radially oriented strips with a small stereo angle implemented directly into the sensor surface. The first-ever results for the stereo annulus geometry have been collected across several sites world- wide and are presented here. A number of full-size, unirradiated sensors were evaluated for their mechanical, bulk, and surface properties. The new device, the ATLAS12EC, is compared against its conventionally shaped predecessors, the ATLAS07 and ATLAS12, for realistic evaluation of the sensor design. The bulk character of the unirradiated sensors has been determined from IV curve, CV curve, and metrology studies. The leakage current and full depletion voltage characteristics have been obtained and compared with the strict specifications required by the next-generation tracker. Interstrip capacitance and resistance in the four segments of strips, each with equal length constituents and a constant angular pitch, have also been ascertained and are compared to expectations. Long-term leakage current stability tests under various humidity conditions have been conducted to investigate more closely the surface and edge processing. These also allow the determination of any high electric field gradients in the synthesis of stereo radial strips with a tracking coverage enhancing slim edge- width. The impact of the novel stereo annulus sensor geometry on the operation of the detector has been evaluated in these studies. The suitability of the optimized sensor shape for the ATLAS HL-LHC upgrade and future end-cap microstrip trackers will be discussed. |
记录创建於2018-01-03，最後更新在2018-01-04
PDF