Charge collection and field profile studies of heavily irradiated strip sensors for the ATLAS inner tracker upgrade

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F16%3A10369924" target="_blank" >RIV/00216208:11320/16:10369924 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/16:00522534

Result on the web

<a href="http://dx.doi.org/10.1016/j.nima.2016.04.035" target="_blank" >http://dx.doi.org/10.1016/j.nima.2016.04.035</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.nima.2016.04.035" target="_blank" >10.1016/j.nima.2016.04.035</a>

Result language

angličtina

Original language name

Charge collection and field profile studies of heavily irradiated strip sensors for the ATLAS inner tracker upgrade

Original language description

The ATLAS group has evaluated the charge collection in silicon microstrip sensors irradiated up to a fluence of 1 x 10(16) n(eq)/cm(2), exceeding the maximum of 1.6 x 10(15) n(eq)/cm(2) expected for the strip tracker during the high luminosity LHC (HL-LHC) period including a safety factor of 2. The ATLASI2, n(+) -on-p type sensor, which is fabricated by Hamamatsu Photonics (HPK) on float zone (FZ) substrates, is the latest barrel sensor prototype. The charge collection from the irradiated 1 x 1 cm(2) barrel test sensors has been evaluated systematically using penetrating p-rays and an Alibava readout system. The data obtained at different measurement sites are compared with each other and with the results obtained from the previous ATLAS07 design. The results are very consistent, in particular, when the deposit charge is normalized by the sensor&apos;s active thickness derived from the edge transient current technique (edge-TCT) measurements. The measurements obtained using beta-rays are verified to be consistent with the measurements using an electron beam. The edge-TCT is also effective for evaluating the field profiles across the depth. The differences between the irradiated ATLAS07 and ATLASI2 samples have been examined along with the differences among the samples irradiated with different radiation sources: neutrons, protons, and pions. The studies of the bulk properties of the devices show that the devices can yield a sufficiently large signal for the expected fluence range in the HL-LHC, thereby acting as precision tracking sensors.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10303 - Particles and field physics

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nuclear Instruments &amp; Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment

ISSN

0168-9002

e-ISSN

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Volume of the periodical

2016

Issue of the periodical within the volume

831

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

181-188

UT code for WoS article

000382255800034

EID of the result in the Scopus database

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