CERN Accelerating science

Article
Title	The SALT—Readout ASIC for Silicon Strip Sensors of Upstream Tracker in the Upgraded LHCb Experiment
Author(s)	Beteta, Carlos Abellan (Zurich U.) ; Andreou, Dimitra (Syracuse U.) ; Artuso, Marina (Syracuse U.) ; Beiter, Andy (Syracuse U.) ; Blusk, Steven (Syracuse U.) ; Bugiel, Roma (AGH-UST, Cracow) ; Bugiel, Szymon (AGH-UST, Cracow) ; Carbone, Antonio (INFN, Milan) ; Carli, Ina (Beijing, Inst. High Energy Phys.) ; Chen, Bo (Beijing, Inst. High Energy Phys. ; Hunan U.) ; Conti, Nadim (INFN, Milan) ; Benedetti, Federico De (INFN, Milan) ; Ding, Shuchong (Syracuse U.) ; Ely, Scott (Syracuse U.) ; Firlej, Miroslaw (AGH-UST, Cracow) ; Fiutowski, Tomasz (AGH-UST, Cracow) ; Gandini, Paolo (INFN, Milan) ; Germann, Danielle (Syracuse U.) ; Grieser, Nathan (Beijing, Inst. High Energy Phys.) ; Idzik, Marek (AGH-UST, Cracow) ; Jiang, Xiaojie (Beijing, Inst. High Energy Phys.) ; Krupa, Wojciech (AGH-UST, Cracow) ; Li, Yiming (Beijing, Inst. High Energy Phys.) ; Li, Zhuoming (Syracuse U.) ; Liang, Xixin (Syracuse U.) ; Liu, Shuaiyi (Beijing, Inst. High Energy Phys.) ; Lu, Yu (Beijing, Inst. High Energy Phys.) ; Mackey, Lauren (Syracuse U.) ; Moron, Jakub (AGH-UST, Cracow) ; Mountain, Ray (Syracuse U.) ; Petruzzo, Marco (INFN, Milan) ; Pham, Hang (Syracuse U.) ; Schmidt, Burkhard (CERN) ; Sheng, Shuqi (Beijing, Inst. High Energy Phys.) ; Norella, Elisabetta Spadaro (INFN, Milan) ; Swientek, Krzysztof (Zurich U.) ; Szumlak, Tomasz (AGH-UST, Cracow) ; Tobin, Mark (Beijing, Inst. High Energy Phys.) ; Wang, Jianchun (Beijing, Inst. High Energy Phys.) ; Wilkinson, Michael (Syracuse U.) ; Wu, Hangyi (Syracuse U.) ; Zhang, Feihao (Beijing, Inst. High Energy Phys. ; Hunan U.) ; Zou, Quan (Beijing, Inst. High Energy Phys.)
Publication	2021
Number of pages	21
In:	Sensors 22 (2021) 107
DOI	10.3390/s22010107
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; LHCb
Abstract	SALT, a new dedicated readout Application Specific Integrated Circuit (ASIC) for the Upstream Tracker, a new silicon detector in the Large Hadron Collider beauty (LHCb) experiment, has been designed and developed. It is a 128-channel chip using an innovative architecture comprising a low-power analogue front-end with fast pulse shaping and a 40 MSps 6-bit Analog-to-Digital Converter (ADC) in each channel, followed by a Digital Signal Processing (DSP) block performing pedestal and Mean Common Mode (MCM) subtraction and zero suppression. The prototypes of SALT were fabricated and tested, confirming the full chip functionality and fulfilling the specifications. A signal-to-noise ratio of about 20 is achieved for a silicon sensor with a 12 pF input capacitance. In this paper, the SALT architecture and measurements of the chip performance are presented.
Copyright/License	publication: © 2021-2024 The authors (License: CC-BY-3.0)

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