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| Home > Publications database > The Drift Chamber detector of the FOOT experiment: Performance analysis and external calibration |
| Journal Article | GSI-2022-00241 |
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2021
North-Holland Publ. Co.
Amsterdam
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Please use a persistent id in citations: doi:10.1016/j.nima.2020.164756
Abstract: The study that we present is part of the preparation work for the setup of the FOOT (FragmentatiOn Of Target) experiment whose main goal is the measurement of the double differential cross sections of fragments produced in nuclear interactions of particles with energies relevant for particle therapy. The present work is focused on the characterization of the gas-filled drift chamber detector composed of 36 sensitive cells, distributed over two perpendicular views. Each view consists of six consecutive and staggered layers with three cells per layer. We investigated the detector efficiency and we performed an external calibration of the space–time relations at the level of single cells. This information was then used to evaluate the drift chamber resolution. An external tracking system realized with microstrip silicon detectors was adopted to have a track measurement independent on the drift chamber. The characterization was performed with a proton beam at the energies of 228 and 80 MeV. The overall hit detection efficiency of the drift chamber has been found to be 0.929±0.008 , independent on the proton beam energy. The spatial resolution in the central part of the cell is about 150±10 μ m and 300±10 μ m and the corresponding detector angular resolution has been measured to be 1.62±0.16 mrad and 2.1±0.4 mrad for the higher and lower beam energies, respectively. In addition, the best value on the intrinsic drift chamber resolution has been evaluated to be in the range 60−100 μ m. In the framework of the FOOT experiment, the drift chamber will be adopted in the pre-target region, and will be exploited to measure the projectile direction and position, as well as for the identification of pre-target fragmentation events.
Keyword(s): Drift chamber ; Silicon microstrip detector ; Nuclear physics
- ddc:530
Contributing Institute(s): Research Program(s):
- 633 - Life Sciences – Building Blocks of Life: Structure and Function (POF4-633) (POF4-633)
- FAIR Phase-0 - FAIR Phase-0 Research Program (GSI-FAIR-Phase-0) (GSI-FAIR-Phase-0)
- SUC-GSI-Darmstadt - Strategic university cooperation GSI-TU Darmstadt (SUC-GSI-DA) (SUC-GSI-DA)
Appears in the scientific report 2021
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