Bulletin of the American Physical Society
APS April Meeting 2019
Volume 64, Number 3
Saturday–Tuesday, April 13–16, 2019; Denver, Colorado
Session R17: Mini-Symposium: Streaming Readout for Future Experiments
1:30 PM–3:18 PM,
Monday, April 15, 2019
Sheraton
Room: Grand Ballroom II
Sponsoring
Unit:
DNP
Chair: Doug Hasel, MIT
Abstract: R17.00004 : A streaming readout DAQ system for the BDX experiment
2:30 PM–2:42 PM
View Presentation Abstract
Presenter:
Fabrizio Ameli
(INFN-RM)
Authors:
Fabrizio Ameli
(INFN-RM)
Marco Battaglieri
(INFN-GE)
Andrea Celentano
(INFN-GE)
Paolo Musico
(INFN-GE)
Luca Marsicano
(INFN-GE, Universita' degli Studi di Genova)
Tommaso Chiarusi
(INFN-BO)
Carmelo Pellegrino
(INFN-BO)
Riccardo Lunadei
(INFN-RM)
Giacomo Chiodi
(INFN-RM)
Luigi Recchia
(INFN-RM)
Manlio Capodiferro
(INFN-RM)
Lorena Stellato
(INFN-RM)
Daniele Ruggieri
(INFN-RM)
Antonio Girardi
(INFN-RM)
Carlo Alessandro Nicolau
(INFN-RM)
The electronic board presented in this work is a 12-channel digitizer designed for Beam Dump eXperiment at JLab. Main features are a low cost per channel, a flexible and high-performance timing system, an adequate memory buffer, a versatile front-end circuitry, and a trigger-less approach.
The digitizing chain is based on a dual-ADC family, whose members are pin to pin compatible with a choice of 12/14 resolution bits and sampling frequencies from 65 to 250 MHz. For time alignment to a common reference, the board implements a White-Rabbit interface but also accepts a clock signal, which is jitter cleaned and distributed by a PLL. Physics data transmission and board control are accomplished by a commercial System-on-Module mezzanine board based on a Zynq7045.
The board applies a “level-0 trigger”, ie selects hits passing a programmable threshold; samples plus timestamp and channel information are coded in packets and forwarded to PCs for trigger selection and event building. The trigger-less paradigm simplifies both the hardware requirements and the data flow, moving the complexity of higher-level triggers toward the PC farm. The proposed algorithm is effectively scalable to adapt to whatsoever channel number, provided that the interconnection network needs to grow accordingly.
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