H. Abreu, E. Bechetoille, G. Bertolone, G. Claus, C. Colledani, C. Combaret, G. Dozière, C. Hu-Guo, I. Laktineh, H. Mathez, H. Pham, M. Specht, I. Valin, L. Zhang, Y. Zhao
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PICMIC-0: a 5 μm pitch hexagonal pixel sensor with an original tri-axis readout
We present in this paper a new sensor called PICMIC-0 that is intended to exploit the
intrinsic spatial resolution of the MicroChannel Plate (MCP) detectors. Manufactured using 6-metal
TowerJazz 180 nm wafer technology, the sensor features hexagonal charge collection pixels on the
top metal layer with a pitch of 5 μm and covering an area of 7.4 × 6.4 mm2. The 2
million of the pixels of this sensor are not read out individually.
Each pixel is connected to a straight-line in either 0°, 120° or -120° orientation, in which a current is produced in case of a hit. Each of these readout strip-lines is connected to a readout cell which receives this current, amplifies it using a current mirror and converts it into a digital signal by means of a current comparator. The data is collected from the digital outputs of the readout cells using a priority encoder readout scheme and transmitted in frames of 400 ns. This projective readout system reduces the number of channels to be read out from 2 million pixels to 2556 readout cells integrated within the pixel matrix. Using three projections reduces the ambiguity in case of multiple hits.
期刊介绍:
Journal of Instrumentation (JINST) covers major areas related to concepts and instrumentation in detector physics, accelerator science and associated experimental methods and techniques, theory, modelling and simulations. The main subject areas include.
-Accelerators: concepts, modelling, simulations and sources-
Instrumentation and hardware for accelerators: particles, synchrotron radiation, neutrons-
Detector physics: concepts, processes, methods, modelling and simulations-
Detectors, apparatus and methods for particle, astroparticle, nuclear, atomic, and molecular physics-
Instrumentation and methods for plasma research-
Methods and apparatus for astronomy and astrophysics-
Detectors, methods and apparatus for biomedical applications, life sciences and material research-
Instrumentation and techniques for medical imaging, diagnostics and therapy-
Instrumentation and techniques for dosimetry, monitoring and radiation damage-
Detectors, instrumentation and methods for non-destructive tests (NDT)-
Detector readout concepts, electronics and data acquisition methods-
Algorithms, software and data reduction methods-
Materials and associated technologies, etc.-
Engineering and technical issues.
JINST also includes a section dedicated to technical reports and instrumentation theses.