Speaker
Description
Microstrip detectors are essential, high-resolution position-sensitive sensors used in nuclear physics for tracking, vertex reconstruction, and beam monitoring. In addition to those detectors pad arrays are used when moderate position resolution is required combined with unambiguity in particle detection, for example in beam monitoring. Different ancillary detectors are based on microstrips detectors (e.g. FARCOS [1], AIDA [2], MUST [3], [4] and reference therein).
We designed and engineered a dedicated frontend based on a custom designed ASIC, intended for spectroscopy and timing measurements to be coupled with microstrip detectors or pad arrays. The frontend electronics features INL below 0.5% over the full dynamic range., energy resolution better than 15 keV FWHM at the 241Am α-particle energy, intrinsic time jitter below 100 ps from 1.5 MeV onwards – 25ps at 5 MeV and selectable gain factor from 10mV/MeV, up to 1.8mV/MeV, translating in a dynamic range of more than 15bits. With a small compromise on the time resolution the full-scale energy range can be extended up to a gain factor of 0.5mV/MeV over the full-scale range of 1.1V.
This contribution deals with the design of the frontend electronics, to its experimental qualification aimed at assessing the relevant properties for timing and spectroscopy and at making sound the estimation of the system performance when coupled with different detector systems. A full set of measurements to assess the performance of the designed electronics will be presented and critically analysed, with particular attention to possible applications.
[1] Pagano, E.; Acosta, L.; Auditore, L.; Boiano, C.; Cardella, G.; Castoldi, A.; D’Andrea, M.; Dell’aquila, D.; De Filippo, E.; De Luca, S.; et al. Status and perspective of FARCOS: A new correlator array for nuclear reaction studies. EPJ Web Conf. 2016, 117, 10008
[2] Hall, O.; Davinson, T.; Griffin, C.J.; Woods, P.J.; Appleton, C.; Bruno, C.G.; Estrade, A.; Kahl, D.; Sexton, L.; Burrows, I.; et al. The Advanced Implantation Detector Array (AIDA). Nucl. Instrum. Method A 2023, 1050, 168166
[3] Pollacco, E.; Beaumel, D.; Roussel-Chomaz, P.; Atkin, E.; Baron, P.; Baronick, J.P.; Becheva, E.; Blumenfeld, Y.; Boujrad, A.; Drouart, A.; et al. MUST2: A new generation array for direct reaction studies. Eur. Phys. J. A 2005, 25, 287–288
[4] J. Vesić; Tracking Detectors in Low-Energy Nuclear Physics: An Overview, Quantum Beam Sci. 2024, 8(3), 24; https://doi.org/10.3390/qubs8030024