PACIFIC

• Verfasst von: Gascón, David [VerfasserIn]
• Verfasst von: Comerma-Montells, Albert [VerfasserIn]
• Verfasst von: Han, Xiaoxue [VerfasserIn]
• Titel: PACIFIC
• Titelzusatz: A 64-channel ASIC for scintillating fiber tracking in LHCb upgrade
• Verf.angabe: D. Gascon, H. Chanal, A. Comerma, S. Gomez, X. Han, J. Mazorra, J. Mauricio, N. Pillet, F. Yengui, R. Vandaele
• E-Jahr: 2015
• Jahr: 23 April 2015
• Umfang: ? S.
• Teil: volume:10
• Teil: year:2015
• Teil: number:04
• Teil: elocationid:C04030
• Teil: extent:?
• Fussnoten: Gesehen am 09.08.2021
• Titel Quelle: Enthalten in: Journal of Instrumentation
• Ort Quelle: London : Inst. of Physics, 2006
• Jahr Quelle: 2015
• Band/Heft Quelle: 10(2015), 04, Artikel-ID C04030
• ISSN Quelle: 1748-0221
• DOI: doi:10.1088/1748-0221/10/04/C04030
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1765953049

Abstract

The LHCb detector will be upgraded during the next LHC shutdown in 2018/19 [1]. The tracker system will have a major overhaul. Its components will be replaced with new technologies in order to cope with the increased hit occupancy and radiation environment. Here we describe a detector made of scintillating fibers read out by silicon photomultipliers (SiPM), with a view to its application for this upgrade. This technology has been shown to achieve high efficiency and spatial resolution, but its integration within a LHCb experiment presents new challenges. This article gives an overview of the R&D status of the low-Power ASIC for the sCIntillating FIbres traCker (PACIFIC) chip implemented in a 130 nm CMOS technology. The PACIFIC chip is a 64-channel ASIC which can be connected to a SiPM without the need of any external component. It includes analog signal processing and digitization. The first stage is a current conveyor followed by a tunable fast shaper (≈10 ns) and a gated integrator. The digitization is performed using a 3 threshold non-linear flash ADC operating at 40 MHz. The PACIFIC chip has the ability to cope with different SiPM suppliers with a power consumption below 8 mW per channel and it is radiation-tolerant. Lastly, simulation and test results show the proper read out of the SiPMs with the PACIFIC chip.