Study of surface properties of ATLAS12 strip sensors and their radiation resistance

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F16%3A10371079" target="_blank" >RIV/00216208:11320/16:10371079 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/16:00522545

Result on the web

<a href="http://dx.doi.org/10.1016/j.nima.2016.03.056" target="_blank" >http://dx.doi.org/10.1016/j.nima.2016.03.056</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.nima.2016.03.056" target="_blank" >10.1016/j.nima.2016.03.056</a>

Result language

angličtina

Original language name

Study of surface properties of ATLAS12 strip sensors and their radiation resistance

Original language description

A radiation hard micro-strip sensor for the use in the Upgrade of the strip tracker of the ATLAS experiment at the High Luminosity Large Hadron Collider (HL-LHC) has been developed by the &quot;ATLAS ITk Strip Sensor collaboration&quot; and produced by Hamamatsu Photonics. Surface properties of different types of end-cap and barrel miniature sensors of the latest sensor design ATLASI2 have been studied before and after irradiation. The tested barrel sensors vary in &quot;punch-through protection&quot; (PTP) structure, and the end-cap sensors, whose stereo-strips differ in fan geometry, in strip pitch and in edge strip ganging options. Sensors have been irradiated with proton fluences of up to 1 x 10(16) n(eq)/cm(2), by reactor neutron fluence of 1 x 10(15) n(eq)/cm(2) and by gamma rays from Co-60 up to dose of 1 MGy. The main goal of the present study is to characterize the leakage current for micro discharge breakdown voltage estimation, the inter-strip resistance and capacitance, the bias resistance and the effectiveness of PTP structures as a function of bias voltage and fluence. It has been verified that the ATLASI2 sensors have high breakdown voltage well above the operational voltage which implies that different geometries of sensors do not influence their stability. The inter-strip isolation is a strong function of irradiation fluence, however the sensor performance is acceptable in the expected range for HL-LHC. New gated PTP structure exhibits low PTP onset voltage and sharp cut-off of effective resistance even at the highest tested radiation fluence. The inter-strip capacitance complies with the technical specification required before irradiation and no radiation-induced degradation was observed. A summary of ATLASI2 sensors tests is presented including a comparison of results from different irradiation sites. The measured characteristics are compared with the previous prototype of the sensor design, ATLAS07.

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

<a href="/en/project/LG13009" target="_blank" >LG13009: International experiment ATLAS-CERN</a><br>

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

10

Pages from-to

197-206

UT code for WoS article

000382255800036

EID of the result in the Scopus database

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