Energy sensitive Timepix silicon detector for electron imaging
- NázevTitle
- Energy sensitive Timepix silicon detector for electron imagingEnergy sensitive Timepix silicon detector for electron imaging
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- M. Esposito, J. Jakůbek, G. Mettivier, S. Pospíšil, P. Russo, J. Šolc
- Klíčová slovaKeywords
- pixel detector, Timepix, electron imaging, Autoradiography, Electron microscopy
- DOIDOI
- 10.1016/j.nima.2011.01.148
- Časopis / citaceJournal / citation
- Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 652(1), 458-461 (2011) · ISSN 0168-9002
- RokYear
- 2011
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Využití radionuklidů a ionizujícího zářeníApplication of radionuclides and ionising radiation
- CitovánoCited by
- 36 (OpenAlex)
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
We present the first measurements with the energy sensitive Timepix pixel detector for electron imaging. The hybrid pixel detector consists of a silicon detector, 300 mu m thick, bump-bonded to the Timepix readout chip developed by the Medipix2 collaboration (256 x 256 pixels, 55 mu m pitch, 14.08 x 14.08 mm(2) sensitive area). Each Timepix pixel can be independently operated in one of three modes: 1. counting of the detected particles; 2. measurement of the particle energy; 3. measurement of the time of particle interaction. The energy measurement in the second mode is performed via the determination of the "Time-Over-Threshold" (TOT). The ionization charge generated by the particle along its track is often registered by several adjacent pixels forming a cluster. The shape of the cluster is affected also by lateral charge spread. It is often possible to determine a particle type, its energy, entrance point and direction by online or offline analysis of shapes of recorded clusters. This way an influence of background or noise can be significantly reduced in measured data.
We present the first measurements with the energy sensitive Timepix pixel detector for electron imaging. The hybrid pixel detector consists of a silicon detector, 300 mu m thick, bump-bonded to the Timepix readout chip developed by the Medipix2 collaboration (256 x 256 pixels, 55 mu m pitch, 14.08 x 14.08 mm(2) sensitive area). Each Timepix pixel can be independently operated in one of three modes: 1. counting of the detected particles; 2. measurement of the particle energy; 3. measurement of the time of particle interaction. The energy measurement in the second mode is performed via the determination of the "Time-Over-Threshold" (TOT). The ionization charge generated by the particle along its track is often registered by several adjacent pixels forming a cluster. The shape of the cluster is affected also by lateral charge spread. It is often possible to determine a particle type, its energy, entrance point and direction by online or offline analysis of shapes of recorded clusters. This way an influence of background or noise can be significantly reduced in measured data.