Spatially Correlated and Coincidence Detection of
Fission Fragments with the Pixel Detector Timepix
Author
Granja Carlos, Doc. Ing. Ph.D.
| IEAP
|
Kraus Václav, Ing.
| IEAP
|
Jakůbek Jan, Ing. Ph.D.
| IEAP
|
Pospíšil Stanislav, Ing. DrSc.
| IEAP
|
Mašek Petr, Bc.
| IEAP
|
Vykydal Zdeněk, Ing.
| IEAP
|
Platkevič Michal, Ing.
| IEAP
|
Kohout Zdeněk, RNDr.
| IEAP
|
Kopatch Yuri
| JINR Dubna
|
Telezhnikov S.
| JINR Dubna
|
Koester Ulli
| ILL Grenoble
|
Vacík Jiří, CSc.
| Nuclear Physics Institute of the ASCR
|
Tomandl Ivo
| Nuclear Physics Institute, Rez, Ac. Sc. Czech Republic
|
Year
2010
Scientific journal
2010 IEEE Nuclear Science Symposium Conference Record, Pages: 1578-1584, doi: 10.1109/NSSMIC.2010.5874042
Web
Abstract
Charged-particle coincidence correlated
measurements such as angular correlations between rare and
main fission fragments measured with conventional detectors
provide only partial and limited information (energy cutoff,
narrow range of studied ion Z numbers). Many of these
drawbacks arise from the standard solid state detectors used so
far which can be solved simultaneously by usage of highly
segmented single-quantum counting pixel detectors. The Timepix
pixel device, which is equipped with energy and time sensitivity
capability per pixel, provides high granularity, wide dynamic
range and per pixel threshold. This detector operated with
integrated USB-readout interfaces such as the USB 1.0 and
FITPix devices and the data acquisition software tool Pixelman,
both developed for the pixel detectors of the Medipix-family,
enables a variety of instrumental configurations, visualization,
real-time event-by-event selection as well as vacuum and
portability of operation for flexible measurements on different
targets and setups. These features combined with event track
analysis provide enhanced signal to noise ratio with a high
suppression of background and unwanted events. The detector
provides multi-parameter information (position, energy and
time) for basically all types of ionizing particles in a wide
dynamic range of energy (pixel energy threshold ≈ 4 keV),
interaction/arrival time (timepix clock step ≥ 100 ns) and position
(pixel size = 55 μm). High selectivity is achieved by spatial and
time correlation in the same sensor. In addition, several detectors
can be run in coincidence. The open and close exposition
(shutter) time as well as the readout DAQ can be fully
synchronized. For this purpose, we have assembled a modular
multi-parameter, tunable and extendable coincidence detector
array system based on two and more Timepix devices which can
be coupled with supplementary detectors (solid state ΔE detectors
and/or ionization chambers) for enhanced ion selectivity. We
describe the individual configurations and techniques together
with the experiments carried out at several neutron beam/source
facilities. We summarize the results and capabilities of
application.
Grants
Projects
Cite article as:
C. Granja, V. Kraus, J. Jakůbek, S. Pospíšil, P. Mašek, Z. Vykydal, M. Platkevič, Z. Kohout, Y. Kopatch, S. Telezhnikov, U. Koester, J. Vacík, I. Tomandl, "Spatially Correlated and Coincidence Detection of
Fission Fragments with the Pixel Detector Timepix", 2010 IEEE Nuclear Science Symposium Conference Record, Pages: 1578-1584, doi: 10.1109/NSSMIC.2010.5874042 (2010)