A: Diagnosing soft x-ray (SXR) emission from tokamaks represents a unique source of information, since it allows the study of several plasma parameters, such as the electron and ion temperature, the investigation of the ionization equilibrium, particle and impurities transport and the study of MHD fluctuations and disruptions. A new SXR diagnostic system called EXODUS (Enhanced X-ray Optimized Detector for Use in multiple Scenarios) is under development with the aim to obtain energy resolved SXR emission profiles from the plasma with a high time resolution (< 0.1 ms). The system is based on the Gas Electron Multiplier (GEM) technology coupled with the new data acquisition system especially designed for GEM called GEMINI, which gives the possibility to obtain information about the energy deposited in the detector by the incoming radiation using the so called Time-Over-Threshold technique on each detector channel. The information of the deposited energy allows the study of the SXR emission from the plasma resolved in space, energy and time. There are several advantages in the use of GEM based detector in the harsh environment of a tokamak. First of all, it offers very high rate capabilities (up to 1 MHz/mm 2 ), giving the possibility 1Corresponding author.

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This study presents a novel low-pass continuous-time filter based on the voltage flipped-source-follower (SF). The filter efficiently operates in CMOS 28 nm and improves the SF filters state-of-the-art thanks to a dedicated circuit that operates in fully-differential fashion (instead of the pseudo-differential typically used in state-of-the-art SF filters) with a dedicated Common-Mode-Feedback circuit. Thus this work extends the application of the SF filtering stages to the nm-range technologies where threshold voltage (V TH) is only two times lower than the supply voltage (V DD) for what regards standard-process MOS transistors. In order to validate the design concept, the proposed filter has been designed in CMOS 28 nm technology. Extensive simulation results of a 131 MHz −3 dB frequency proof-of-concept second-order filter are proposed. The device consumes 510 µW power from a single 1 V supply-voltage. In-band integrated noise is 160 µV RMS and IIP3 is 19 dBm for 20 and 21 MHz input tones frequencies. Simulation results lead to 166 J −1 figure-of-merit, outperforming the analogue filter stateof-the-art.

This paper presents a Fast-Tracker front-end (FTfe) for ATLAS small-diameter Muon Drift Tube (sMDT) detectors of the Phase-II Upgrade HL-LHC. This design addresses the higher rate capability required by sMDT and reduces the dead-time below the maximum drift time, further increasing the efficiency. The front-end ensures a fast baseline restoration with a reset interval of maximum 160 ns, so that the secondary spurious pulses are avoided and the successive muon signals can be detected soon and correctly. The device has been designed in 1V-28nm-CMOS technology; 4.7mV/fC sensitivity and 0.24fC ENC are achieved with a core area of 0.03mm 2 .