The Interface and Control System of the Upgraded HVOpto/HVRemote Card of the TileCal

José Soares Augusto, C. Rato, L. Gurriana, L. Seabra, A. Gomes, Guiomar Evans, A. Maio


To comply with the increase in luminosity of the LHC (Large Hadron Collider) in the next decades, the electronics of the ATLAS (A Toroidal LHC Apparatus) experiment is being upgraded. Included in the upgrade is the interfacing and control electronics system of the HVOpto/HVRemote cards in the TileCal (Tile Calorimeter) detector, which provides high voltages to about 104 photomultipliers (PMTs). This paper presents the new interfacing architecture for the system and details the design of a prototype control board (HVRemote-Ctrl) used for test and validation of the new architecture. The tests evaluate the system multiplexing capabilities needed to monitor all the TileCal PMTs in real time. The communication channels involved, supported in Ethernet and SPI interfaces/protocols, have been fully tested. Some results from the tests already completed are presented.


Instrumentation for High-Energy Physics; Electronic Control; Ethernet/SPI Interfacing

Full Text:



R. Chadelas et al., "High voltage distributor system for the Tile hadron calorimeter of the ATLAS detector", ATLAS-TILECAL-2000-003, 2000.

F. Vazeille, "Performance of a remote High Voltage power supply for the Phase II upgrade of the ATLAS Tile Calorimeter", JINST 11 C02050, 2016.

A. Gomes, "The new front-end electronics for the ATLAS Tile Calorimeter Phase 2 Upgrade", JINST 11 C02015, 2016.

G. Drake, "The New Front-End Electronics

for the ATLAS Tile Calorimeter Phase 2 Upgrade", ATLAS note ATL-TILECAL-PROC-2015-023,


C. Buffington, "MCP23S17 Class for Arduino",, retrieved in January 2017.

M. Matsumoto, and, T. Nishimura, "Mersenne Twister: A 623-Dimensionally Equidistributed Uniform Pseudorandom Number Generator", ACM Transactions on Modeling and Computer Simulation, vol.8, no. 1, pp.3–30, 1998.

D.-U. Lee, J. D. Villasenor, W. Luk and P. H. W. Leong, "A Hardware Gaussian Noise Generator Using the Box-Muller Methods and Its Error Analysis", IEEE Transactions on Computers, vol. 55, no. 6, pp. 659-671, June 2006.

J. Alves and G. Evans, "Digital Pseudorandom Uniform Noise Generator for ADC Histogram Test", DCIS 2015 – XXX Conference on Design of Circuits and Integrated Systems, pp. 1- 6, Estoril, Portugal, November 2015, DOI: 10.1109/DCIS.2015.7388592.

J. D. Alves and G. Evans, "A Digital Pseudorandom Uniform Noise Generator for ADC Built-In Self-Test", 2015 10th IEEE International Conference on Design & Technology of Integrated Systems in Nanoscale Era (DTIS), pp. 1-5, Naples, Italy, April 2015.,, retrieved in January 2017. WinCC is a part of the SIMATIC SCADA system from Siemens.


  • There are currently no refbacks.

Copyright (c) 2017 José Soares Augusto

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.