5,061 research outputs found
Estrazione di caratteristiche in tempo reale per sistemi di acquisizione dati senza trigger in esperimenti di fisica delle particelle
No full textLo spettrometro COmmon Muon and Proton Apparatus for Structure and Spectroscopy (COMPASS) del CERN sta aggiornando parte dei suoi rivelatori e del sistema di acquisizione dei dati per gestire eventi di dimensioni maggiori, a causa di una maggiore quantità di canali e di tassi di eventi più elevati. A partire dal 2023, l'esperimento si chiamerà formalmente AMBER e il suo spettrometro avrà circa 100 milioni di canali di dati. Grazie ai progressi della microelettronica e della tecnologia SoC-FPGA, è diventato possibile leggere ed elaborare i dati provenienti dai rivelatori senza la classica riduzione dei dati di uno schema di trigger di livello 1. Per l'acquisizione dei dati di AMBER, la migrazione dei dati è stata effettuata in modo tale da poterli analizzare in un secondo momento. Per l'acquisizione dei dati AMBER è stata proposta la migrazione a un'architettura priva di trigger di livello 1, nota come trigger-less DAQ. Questo aggiornamento dell'architettura consente di generare un maggior numero di statistiche per ulteriori analisi. Il funzionamento senza trigger richiede un nuovo tipo di elettronica di front-end in grado di lavorare in modalità free-running per la lettura dei rivelatori. A causa dei requisiti di elaborazione intensiva e della necessità di trasmissione seriale dei dati ad alta velocità, alcuni dei dispositivi attualmente installati per la lettura dei rivelatori non sono in grado di lavorare in modalità trigger-less DAQ, quindi devono essere sostituiti. Lo scopo principale di questa tesi è proporre, progettare e sviluppare un nuovo sistema di lettura trigger-less per il rivelatore ECAL2 a 3068 canali dell'esperimento COMPASS/AMBER. A tal fine, è stata sviluppata una piattaforma hardware per l'elettronica di front-end utilizzando la scheda digitalizzatrice di corrente (MSADC, basata su FPGA) e come componente principale un dispositivo MPSoC Ultrascale+ SoM ad alte prestazioni per l'elaborazione dei dati provenienti da 16 canali a 960 Mbit/s ciascuno. Il design modulare dell'hardware ne consente l'uso con diversi front-end di lettura e famiglie di SoM. È stato sviluppato tutto il firmware per le FPGA e i processori ed è stato implementato un processore di impulsi digitali (DPP) per l'estrazione delle caratteristiche dei dati in tempo reale in un sistema senza trigger. Il DPP è il componente principale per l'elaborazione degli impulsi, compresi i metodi per l'estrazione del valore dell'ampiezza dell'impulso e la discriminazione della forma dell'impulso. Questi metodi si basano su un modello matematico di impulsi tipici acquisiti da un prototipo di rivelatore. Oltre all'estrazione delle caratteristiche, il DPP è anche predisposto per inviare tracce contenenti impulsi interi per ulteriori studi. Con questa nuova elettronica di front-end, l'ECAL2 può lavorare in modalità free-running e trigger-less e, con l'aggiunta di un DPP, la quantità di dati trasmessi si riduce drasticamente, risparmiando ulteriore tempo di elaborazione e risorse di archiviazione.The COmmon Muon and Proton Apparatus for Structure and Spectroscopy (COMPASS) spectrometer at CERN is upgrading part of its detectors and data acquisition system to handle larger event sizes, owing to a higher channel quantity and higher event rates. Starting in 2023, the experiment will formally be called AMBER, and its spectrometer will have approximately 100 million data channels. Owing to the progress in microelectronics and SoC-FPGA technology, it has become possible to read and process data coming from detectors without the classical data reduction of a Level-1 trigger schema. For AMBER data acquisition the migration to a Level-1 trigger free architecture, known as trigger-less DAQ was proposed. This architecture upgrade allows for the generation of more statistics for further analysis. The trigger-less operation requires a new type of frontend electronics capable of working in a free-running mode for detectors readout. Due to the intensive processing requirements and the need for high-speed serial data transmission, some of the devices that are currently installed for the readout of the detectors are not capable of working in a trigger-less DAQ, so they need to be replaced. The main purpose of this thesis is to propose, design and develop a new trigger-less readout system for the 3068-channel ECAL2 detector of the COMPASS/AMBER experiment. For this purpose, a hardware platform for front-end electronics was developed using the current digitizer board (MSADC, FPGA-based) and as core component a high-performance MPSoC Ultrascale+ SoM device for processing the data coming from 16 channels at 960 Mbit/s each. The modular hardware design allows its use with different front-end readouts and SoM families. All firmware for the FPGAs and processors was developed and a digital pulse processor (DPP) for real-time data features extraction in a trigger-less system was implemented. The DPP is the core component for pulse processing, including methods for extracting the pulse amplitude value and pulse shape discrimination. These methods are based on a mathematical model of typical pulses acquired from a detector prototype. Besides features extraction, the DPP is also prepared to send traces containing whole pulses for further studies. With this new frontend electronics, the ECAL2 can work in a free-running and trigger-less mode and with the addition of a DPP the amount of transmitted data is drastically reduced, saving further processing time and storage resources.
Design for Portability of Reconfigurable Virtual Instrumentation
No full textA portable architectural design strategy is described for the implementation of reconfigurable virtual instrumentation based on programmable Systems-on-Chip integrating microprocessors and FPGA in the same physical device. The key role is played by a general purpose communication block as a means to efficiently separate the activities carried out in the microprocessor and in the FPGA. Both parts interact according to simple logic protocols by reading and writing data on the common memory resources of the communication block. The architecture of the proposed communication system can be easily implemented in practically any modern programmable System-on-Chip. With the proposed strategy, the porting of embedded software programs and associated FPGA designs among different device families and vendors is facilitated. A structured methodology is proposed for handling complex real-time systems based on these programmable Systems-on-Chip. We described a concrete communication block that has been successfully implemented and utilized for a quick implementation of a data acquisition system based on a Xilinx Zynq-7030 FPGA Mezzanine Card (FMC) and a custom FMC module with an 8-bit 500 MSPS ADC
Study of the Data Exchange between Programmable Logic and Processor System of Zynq-7000 Devices
No full textZynq-7000 devices from Xilinx has gained strong popularity in the last years. Several documents and examples about interfaces usage and how to communicate the programmable logic with the processor are available, but some of them are not properly explained and in particular, the maximum throughput is not clearly specified. With this purpose, in this work a measurement method is presented and applied over the five available interfaces, considering the most used alternatives. Tests were carried on a Zybo board, but the results can be easily used to estimate the performance of others systems setups. Special hardware features and functionality are also discussed, providing a better understanding of system performance. Related papers were studied but none of them presents comparable information as to provide a fair comparison
Introducing “La fabrique du droit”. A Conversation with Bruno Latour
No full textBruno Latour talks with Paolo Landri about his book on the Conseil d'Etat (La Fabrique du droit). The conversation was held in 2006 at the time of the Italian translation of the book and illustrates the research project and the difficulties the author had in the field. At the same time, it clarifies the trajectories of Bruno Latour's work and theoretical framework of his program of study with respect to sociology, anthropology, and philosophy of law. The conversation helps to understand the open-ended character of Bruno Latour's research and reflection including STS as well as sociological, anthropological and philosophical themes
Author Correction: Collection of the digital data from the neurological examination.
No full textIn this article, the corresponding author was inadvertently designated only to “Bruno Kusznir Vitturi” but it should have been “Bruno Kusznir Vitturi” and “Walter Maetzler”. The original article has been corrected
On Bruno Schulz’s Bookplates
No full textThe Polish version of the article was published in Roczniki Humanistyczne vol. 64, issue 1 (2016).
The article enters into a dialogue with the interpretation of Bruno Schulz’s bookplates made by Władysław Panas in his book Bruno od Mesjasza (Bruno of the Messiah) (Lublin 2001). An attempt to understand them in a different (less holistic) way leads the author of the article to the conclusion that in Schulz’s plates the first veiled variant of the mythical Book may be seen—of the fundamental motif of Bruno Schulz’s later literary work
Jordan "Bruno" Gegenhuber '16 Publishes First-Author Research
No full textJordan "Bruno" Gegenhuber '16 had first-author research, "Gene regulation by gonadal hormone receptors underlies brain sex differences," published in nature magazine on May 4, 2022.Jordan "Bruno" Gegenhuber '16 had first-author research, "Gene regulation by gonadal hormone receptors underlies brain sex differences," published in Nature magazine on May 4, 2022.
Sex hormones play a central role in shaping behavior throughout the animal kingdom, and this study maps where the receptor for estrogen binds to DNA in neurons that regulate rodent social interactions. The findings reveal that estrogen establishes lasting sex differences in gene expression and neuroanatomy during brain development, and identifies hundreds of genes that may mediate estrogen's effects on behavior and disease.
Gegenhuber earned a PhD from the Cold Springs Harbor Laboratory School of Biological Sciences in Long Island, N.Y.. in May 2022. His field of research is in neuroscience, and he has accepted a postdoctoral research position at Harvard Medical Center in Boston, Mass. He also holds the honor of being the Pacific Class of 2016 Valedictorian
Bruno Schulz i polityka
No full textBruno Schulz and politicsThe article discusses Bruno Schulz’s attitude toward politics. It is well known that the author of The Cinnamon Shops was a nonpolitical man. This was the reason for some fi erce attacks against his prose conducted by politically engaged literary critics in the interwar Poland. The author mentions these attacks but he also analyzes Schulz’s less known essays about Piłsudski, Aragon and Brecht, and the way Schulz pictured politics in his prose. It seems that a political dictionary of the author of The Street of Crocodiles comprised terms from different political ideologies; he alluded to Marx, anarchism and Brzozowski. At the end of his article the author discusses the question whether Schulz’s nonpolitical attitude could be compared to the so called conservative revolution in Germany after World War I
Bruno Schulz i polityka
No full textBruno Schulz and politicsThe article discusses Bruno Schulz’s attitude toward politics. It is well known that the author of The Cinnamon Shops was a nonpolitical man. This was the reason for some fi erce attacks against his prose conducted by politically engaged literary critics in the interwar Poland. The author mentions these attacks but he also analyzes Schulz’s less known essays about Piłsudski, Aragon and Brecht, and the way Schulz pictured politics in his prose. It seems that a political dictionary of the author of The Street of Crocodiles comprised terms from different political ideologies; he alluded to Marx, anarchism and Brzozowski. At the end of his article the author discusses the question whether Schulz’s nonpolitical attitude could be compared to the so called conservative revolution in Germany after World War I
Notes on Bruno Schweizer, December 1937
No full textA document discussing Bruno Schweizer, focusing on his involvement in the Housigau Homeland Association and its related magazine as well as his lack of engagement with the Nazi party. The comments indicate that he did not give the Nazi salute or make donations to the party or its affiliated organizations. Includes handwritten comments by Wolfram Sievers and Walther Wüst.https://digitalcommons.ursinus.edu/ahnenerbe_schweizer/1003/thumbnail.jp
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