Detailed studies of the ATLAS pixel detectors

Author

Troncon, Clara

Author_Institution

Ist. Nazionale di Fisica Nucl., Milan, Italy

Volume

47

Issue

3

fYear

2000

fDate

6/1/2000 12:00:00 AM

Firstpage

737

Lastpage

744

Abstract

Results are reported from beam tests of prototype Si pixel sensors and front-end electronics with analog readout developed for use in the ATLAS experiment at the Large Hadron Collider (LHC). Both irradiated and unirradiated assemblies were tested for charge collection, efficiency and position resolution measurements. These indicate that n⁺ in n silicon pixel detectors with p-spray isolation can operate after irradiation to fluences of up to 10¹⁵ n_eq/cm² without significant degradation in performance. The depletion depth of irradiated sensors was measured and their behaviour in a magnetic field was studied. The Lorentz angle was found to decrease significantly after irradiation. Comparison between performance on spatial resolution obtained with digital or with analogical readout is also presented

Keywords

digital readout; neutron effects; nuclear electronics; position sensitive particle detectors; silicon radiation detectors; ATLAS; Lorentz angle; Si; Si pixel detector; analog readout; charge collection; depletion depth; digital readout; efficiency; front-end electronics; magnetic field; neutron irradiation; p-spray isolation; position resolution; spatial resolution; Assembly; Charge measurement; Colliding beam devices; Current measurement; Detectors; Electronic equipment testing; Large Hadron Collider; Magnetic field measurement; Magnetic sensors; Prototypes;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.856507

Filename

856507