The new and complete Belle II DEPFET pixel detector: Commissioning and previous operational experience

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F24%3A10494186" target="_blank" >RIV/00216208:11320/24:10494186 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=B4RIVWIMrW" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=B4RIVWIMrW</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.nima.2024.169763" target="_blank" >10.1016/j.nima.2024.169763</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The new and complete Belle II DEPFET pixel detector: Commissioning and previous operational experience

Popis výsledku v původním jazyce

The Belle II experiment at the SuperKEKB collider in Tsukuba, Japan, has collected e+e- + e - collision data between 2019 and 2022. After reaching a record-breaking instantaneous luminosity of 4.71x1034 . 71x10 34 cm -2 s -1 and recording a dataset corresponding to 424 fb -1 , it completed its first planned long shutdown phase in December 2023. Aside from upgrades of the collider and detector maintenance, the shutdown was used for the installation of the two-layer Pixel VerteX Detector (PXD). As the innermost sub-detector, multiple scattering effects need to be reduced. PXD utilizes the Depleted P-channel Field Effect Transistor (DEPFET) technology, allowing for a material budget of 0.21% X0 0 per layer. Each of the tracker&apos;s 40 modules consists of an array of 250x768 pixels with a pitch ranging from 50 mu mx 55 mu m for the inner to 85 mu mx 55 mu m for the outer layer yielding high gain and high signal-to-noise ratio while retaining about 99% hit efficiency. This article discusses the experience of the 4-year operation of the previous single-layer PXD in harsh background conditions as well as commissioning and testing of the fully-populated PXD2 during Long Shutdown 1.

Název v anglickém jazyce

The new and complete Belle II DEPFET pixel detector: Commissioning and previous operational experience

Popis výsledku anglicky

The Belle II experiment at the SuperKEKB collider in Tsukuba, Japan, has collected e+e- + e - collision data between 2019 and 2022. After reaching a record-breaking instantaneous luminosity of 4.71x1034 . 71x10 34 cm -2 s -1 and recording a dataset corresponding to 424 fb -1 , it completed its first planned long shutdown phase in December 2023. Aside from upgrades of the collider and detector maintenance, the shutdown was used for the installation of the two-layer Pixel VerteX Detector (PXD). As the innermost sub-detector, multiple scattering effects need to be reduced. PXD utilizes the Depleted P-channel Field Effect Transistor (DEPFET) technology, allowing for a material budget of 0.21% X0 0 per layer. Each of the tracker&apos;s 40 modules consists of an array of 250x768 pixels with a pitch ranging from 50 mu mx 55 mu m for the inner to 85 mu mx 55 mu m for the outer layer yielding high gain and high signal-to-noise ratio while retaining about 99% hit efficiency. This article discusses the experience of the 4-year operation of the previous single-layer PXD in harsh background conditions as well as commissioning and testing of the fully-populated PXD2 during Long Shutdown 1.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

<a href="/cs/project/GA22-18469S" target="_blank" >GA22-18469S: Studium jevů za Standardním modelem ve flavor sektoru na experimentu Belle II</a><br>

Návaznosti

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

Rok uplatnění

2024

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

1872-9576

Svazek periodika

1068

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

169763

Kód UT WoS článku

001306604900001

EID výsledku v databázi Scopus

2-s2.0-85202297979