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dc.contributor.author
Alipour Tehrani, Niloufar
dc.contributor.supervisor
Dissertori, Günther
dc.contributor.supervisor
Wallny, Rainer
dc.contributor.supervisor
Dannheim, Dominik
dc.date.accessioned
2017-06-20T10:16:57Z
dc.date.available
2017-06-20T09:44:01Z
dc.date.available
2017-06-20T10:16:57Z
dc.date.issued
2017
dc.identifier.uri
http://hdl.handle.net/20.500.11850/164813
dc.identifier.doi
10.3929/ethz-b-000164813
dc.description.abstract
The multi- TeV e+e− Compact Linear Collider (CLIC) is one of the options for a future high-energy collider for the post-LHC era. It would allow for searches of new physics and simultaneously offer the possibility for precision measurements of standard model processes. The physics goals and experimental conditions at CLIC set high precision requirements on the vertex detector made of pixel detectors: a high pointing resolution of 3 μm, very low mass of 0.2% X0 per layer, 10 ns time stamping capability and low power dissipation of 50 mW/cm2 compatible with air-flow cooling. In this thesis, hybrid assemblies with thin active-edge planar sensors are characterised through calibrations, laboratory and test-beam measurements. Prototypes containing 50 μm to 150 μm thin planar silicon sensors bump-bonded to Timepix3 readout ASICs with 55 μm pitch are characterised in test beams at the CERN SPS in view of their detection efficiency and single-point resolution. A digitiser for AllPix, a Geant4-based simulation framework, has been developed in order to gain a deeper understanding of the charge deposition spectrum and the charge sharing in such thin sensors. The AllPix framework is also used to simulate the beam telescope and extract its tracking resolution. It is also employed to predict the resolution that can be achieved with future assemblies with thin sensors and smaller pitch. For CLIC, a full coverage of the vertex detector is essential while keeping the material content as low as possible. Seamless tiling of sensors, without the need for overlaps, by the active-edge technology allows for extending the detection capability to the physical edge of the sensor and thereby minimising the inactive regions. Thin-sensor prototypes containing active edges with different configurations are characterised in test-beams in view of the detection performance at the sensor edge. Technology Computer-Aided Design (TCAD) finite- element simulations are implemented to reproduce the fabrication and the operation of such devices. The simulation results are compared to data for different edge terminations.
en_US
dc.format
application/pdf
dc.language.iso
en
en_US
dc.publisher
ETH Zurich
en_US
dc.rights.uri
http://rightsstatements.org/page/InC-NC/1.0/
dc.subject
SEMICONDUCTING SENSORS (ELECTRONICS)
en_US
dc.subject
Particle physics
en_US
dc.subject
CLIC
en_US
dc.subject
CERN
en_US
dc.subject
Pixel detector
en_US
dc.subject
Vertex detector
en_US
dc.subject
Detector
en_US
dc.subject
Geant4 simulations
en_US
dc.subject
TCAD
en_US
dc.subject
Guard ring
en_US
dc.subject
Active edge sensors
en_US
dc.title
Test-beam measurements and simulation studies of thin pixel sensors for the CLIC vertex detector
en_US
dc.type
Doctoral Thesis
dc.rights.license
In Copyright - Non-Commercial Use Permitted
dc.date.published
2017-06-20
ethz.size
136 p.
en_US
ethz.code.ddc
DDC - DDC::5 - Science::530 - Physics
ethz.identifier.diss
24216
en_US
ethz.publication.place
Zurich
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02532 - Institut für Teilchen- und Astrophysik / Inst. Particle Physics and Astrophysics::03593 - Dissertori, Günther / Dissertori, Günther
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02010 - Dep. Physik / Dep. of Physics::02532 - Institut für Teilchen- und Astrophysik / Inst. Particle Physics and Astrophysics::03593 - Dissertori, Günther / Dissertori, Günther
en_US
ethz.date.deposited
2017-06-20T09:44:02Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-06-20T10:17:10Z
ethz.rosetta.lastUpdated
2020-02-15T05:52:36Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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