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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/68378271:_____/16:00522545

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

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

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

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

ISSN

0168-9002

e-ISSN

—

Svazek periodika

2016

Číslo periodika v rámci svazku

831

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

197-206

Kód UT WoS článku

000382255800036

EID výsledku v databázi Scopus

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