PACIFIC: SiPM readout ASIC for LHCb upgrade
Dec 21, 20175 pages
Published in:
- Nucl.Instrum.Meth.A 912 (2018) 354-358
Contribution to:
- , 354-358
- NDIP17
- Published: Dec 21, 2018
Experiments:
View in:
Citations per year
Abstract: (Elsevier)
A new 64-channel mixed-signal ASIC is presented: PACIFIC. It was developed in TSMC 130 nm CMOS technology for the readout of the Scintillating Fibre Tracker, as a part of the LHCb upgrade. This detector is based on 250 μ m scintillating fibers readout by custom designed 128-channel silicon photomultiplier arrays. It will cover a total area of 340 m 2 , distributed over the 12 planes that compose it. The sensors are connected directly to PACIFIC without any interface components. The ASIC acquires the current pulses using a current conveyor. A fast double pole-zero cancellation shaper is used to minimize spillover. The charge is then collected using gated integrators, with a twofold interleaved scheme to minimize dead time. The resulting voltage level is digitized with a configurable 2 bit non-linear flash ADC. The output is a 320 Mbps differential signal produced by the serializers, which gather the results from four adjacent channels.- ASIC
- Tracker
- LHCb
- SiPM
- photomultiplier: silicon
- LHC-B
- upgrade
- integrated circuit: design
- scintillation counter: fibre
- tracking detector
References(6)
Figures(0)
- [1]
- [2]
- [3]
- [4]
- [5]
- [6]