LNSTRIP read-out ASIC for the X-ray strip detectors

• Autorzy: Zubrzycka-Singh Weronika

Identyfikatory

DOI

10.24425/ijet.2025.155480

• Języki publikacji: EN

Abstrakty

EN

The X-ray imaging systems dedicated for X-ray spectroscopy, based on a semiconductor strip sensors have been recently an important research topic. The most important research objective is working towards improvement of the spectroscopic and position resolution features [1]-[3]. In spectroscopic applications the short strip silicon detectors are widely used due to their relatively small capacitance and leakage current. Using strip pitch below 75 μm enables achievement of high spatial resolution. In this work, the analysis and design of the read-out electronics for the short silicon strip detectors are presented. The Charge Sensitive Amplifier (CSA) is optimized for the detector capacitance of about 1.5 pF, and the shaping amplifier default peaking time is about 1 μs (controlled by the sets of switches). To achieve the lowest possible noise level, the sources of noise in a radiation imaging system both internal (related to the front-end electronics itself), as well as external, were considered [4]. We target the noise level below 40 el. rms, considering low power consumption (a few mW) and limited channel area. To increase the speed of incoming hits processing, the continuous-time resistive CSA feedback together with a digital feedback reset are included. The prototype integrated circuit comprises of 8 charge processing channels, biasing circuits, reset and base-line restoration logic, and a calibration circuit.

Słowa kluczowe

EN

front-end electronics; detector readout; Si microstrip detectors; X-ray detector; VLSI circuits

• Wydawca: Polish Academy of Sciences, Committee of Electronics and Telecommunication
• Czasopismo: International Journal of Electronics and Telecommunications
• Rocznik: 2025
• Tom: Vol. 71, No. 4
• Strony: 27
• Opis fizyczny: Bibliogr. 12 poz., rys., tab.

Twórcy

autor

Zubrzycka-Singh Weronika

• AGH University of Krakow, Poland

• https://orcid.org/0000-0002-5884-2994

Bibliografia

• [1] G. Geronimo, P. O’Connor, V. Radeka, and B. Yu, “Front-end electronics for imaging detectors,” Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 471, pp. 192-199, 2001.
• [2] R. Ballabriga, J. Alozy, F. N. Bandi, M. Campbell, N. Egidos, J. M. Fernandez-Tenllado, E. H. M. Heijne, I. Kremastiotis, X. Llopart, B. J. Madsen, D. Pennicard, V. Sriskaran, and L. Tlustos, “Photon counting detectors for x-ray imaging with emphasis on ct,” IEEE Transactions on Radiation and Plasma Medical Sciences, vol. 5, no. 4, pp. 422-440, 2021.
• [3] P. Wiacek, W. Dabrowski, J. Fink, T. Fiutowski, H. G. Krane, F. Loyer, A. Schwamberger, K. Swientek, and C. Venanzi, “Position sensitive and energy dispersive x-ray detector based on silicon strip detector technology,” Journal of Instrumentation, vol. 10, no. 4, pp. P04 002—-P04 002, 2015. [Online]. Available: https://doi.org/10.1088%2F1748-0221%2F10%2F04%2Fp04002
• [4] W. Zubrzycka and K. Kasiński, “Noise considerations for the STS/MUCH readout ASIC,” Darmstadt, Tech. Rep. CBM Progress Report 2017, 2018. [Online]. Available: http://repository.gsi.de/record/209729
• [5] J. E. Turner, Atoms, Radiation, and Radiation Protection, ser. No Longer used. Wiley, 2008. [Online]. Available: https://books.google.pl/books?id=-NjMPZEt2yUC
• [6] L. Rossi, P. Fischer, T. Rohe, and N. Wermes, Pixel Detectors: From Fundamentals to Applications, ser. Particle Acceleration and Detection. Springer Berlin Heidelberg, 2006. [Online]. Available: https://books.google.pl/books?id=AKGIXQOm0-EC
• [7] P. O’Connor and G. D. Geronimo, “Prospects for charge sensitive amplifiers in scaled CMOS,” Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 480, no. 2, pp. 713-725, 2002. [Online]. Available: http://www.sciencedirect.com/science/article/pii/S0168900201012128
• [8] W. Zubrzycka and P. Grybos, “Optimization of low-noise read-out electronics for high energy resolution x-ray strip detectors,” Journal of Instrumentation, vol. 18, no. 01, p. C01033, jan 2023. [Online]. Available: https://dx.doi.org/10.1088/1748-0221/18/01/C01033
• [9] A. Rivetti, CMOS: Front-End Electronics for Radiation Sensors, ser. Devices, Circuits, and Systems. CRC Press, 2018. [Online]. Available: https://books.google.pl/books?id=Zuf5CQAAQBAJ
• [10] P. Grybos, “Pole-zero cancellation circuit for charge sensitive amplifier with pile-up pulses tracking system,” in 2006 IEEE Nuclear Science Symposium Conference Record, vol. 1, 2006, pp. 226-230.
• [11] R. Kleczek, P. Kmon, P. Maj, R. Szczygiel, M. Zoladz, and P. Grybos, “Single photon counting readout ic with 44 e rms enc and 5.5 e rms offset spread with charge sensitive amplifier active feedback discharge,” IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 70, no. 5, pp. 1882-1892, 2023.
• [12] W. Dąbrowski, J. Fink, T. Fiutowski, H. Krane, and P. Wiącek, “One dimensional detector for x-ray diffraction with superior energy resolution based on silicon strip detector technology,” Journal of Instrumentation, vol. 7, no. 03, p. P03002, mar 2012. [Online]. Available: https://dx.doi.org/10.1088/1748-0221/7/03/P03002

Uwagi

The author acknowledge funding of this project from the National Science Centre (Research Project 2020/37/N/ST7/01546).