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8 results on '"J.P. Richeux"'

1. The new level-1 trigger for the forward tagger of the L3 experiment

Author

L. Fredj, J.P. Richeux, J. H. Field, D. Sciarrino, M. Bourquin, B. Clerc, and G. F. Susinno

Subjects
Physics, Nuclear and High Energy Physics, Calorimeter (particle physics), business.industry, Detector, High Energy Physics::Experiment, business, Collision, Instrumentation, Signal, Computer hardware
Abstract

A fast level-1 trigger processor for the Active Lead Ring calorimeter (ALR) and for the Very Small Angle Tagger (VSAT) of the L3 detector has been constructed and implemented. The main application is the study of single tagged two-photon collision processes at LEP II. Particular care has been taken to preserve the timing characteristics of the signal in order to allow bunch tagging in the multi-bunch mode of LEP.

Published
1998

2. Construction and performance of the L3 central tracking detector

Author

H. von Gunten, J. Ulbricht, Dimitri Bourilkov, Hannes Jung, H. Anderhub, S. Botev, J. Herrmann, P. Göttlicher, W. Friebel, M. Sassowsky, P. Zemp, J.P. Richeux, Stefan Kirsch, G. Forconi, W. Kastli, R. Leiste, J. Spangler, R. Krankenhagen, P. Schmitz, Y. Peng, M. Deutschmann, M. Hänsli, Ryan Heller, C. Camps, C. Spartiotis, Adrian Biland, F. Beauvais, F. Masciocchi, U. Herten, M. J. Glaubman, M. Möller, Georgi Sultanov, Joe D. Orndorff, F. Tonisch, H. Thürig, Marc Weber, T. Spickermann, P. Bene, Lucas Taylor, M. Pohl, L. Djambazov, G. Barbier, J.C. Sens, B. L. Betev, H. Szczesny, D. McNally, D. Newman, M. Wilhelmi, E. Perrin, M. Maolinbay, A. Donat, D.M. Jansen, G. Viertel, W. Baur, E. Haerdi, M. Tonutti, George Alverson, T. Winands, Wolfgang Lohmann, H. Vogt, U. Rinsche, K. Hangarter, I. Leedom, H. Hofer, J. Grooten, R. Starosta, D. La Marra, D. Ren, H. Frohn, S. Reucroft, F. Behner, Reinhard W. Schulte, A. Pevsner, S. Röhner, Ph Fisher, P. Vikas, H. Schuijlenburg, E. Isiksal, F. Beissel, H. Virnich, A. Böhm, M. Dhina, D. J. Schotanus, Nicolas Produit, L. Antonov, S. Waldmeier, N. Rieb, K. Lanius, Wolfgang Lange, V.R. Krastev, H. Liebmann, C. Neyer, J. Perrier, J. Fehlmann, Werner Lustermann, G. Rahal-Callot, A. Leger, K. Schultze, H. Suter, M. Bourquin, W. Reuter, J. Weber, B. Stöhr, I. Orlinov, H. Akbari, K. Quadflieg, S. Schulte, J. Mnich, U. Horisberger, J. Bao, A. Gougas, K. Bosseler, L. Zehnder, J. Behrens, Konrad Deiters, X. Lue, Jérôme Rose, Ulf Roser, J. H. Field, G. Trowitzsch, C. Y. Chien, R. Pahlke, V. Commichau, M. Okle, and A. Hasan

Subjects
Physics, Nuclear and High Energy Physics, Drift velocity, Physics::Instrumentation and Detectors, Expansion chamber, business.industry, TEC, Detector, Tracking (particle physics), Nuclear physics, Optics, Data acquisition, Large Electron–Positron Collider, High Energy Physics::Experiment, business, Instrumentation, Image resolution
Abstract

The L3 central tracking detector has been in operation since the start-up of LEP (Large Electron Positron collider) in 1989. This detector consists of a Time Expansion Chamber (TEC), a layer of Plastic Scintillating Fibers and a Z-chamber. The TEC gives a high spatial resolution and an excellent multi-track reconstruction capability. The fibers are designed to calibrate the drift velocity with high precision. The Z-Chamber provides TEC with accurate information about the z-coordinates of the tracks. A description of the design and the infrastructure of these three detectors, including the readout and data acquisition system, is given. The performance of the detectors during the 1990 and 1991 LEP running periods is presented.

Published
1993

3. First-level charged particle trigger for the L3 detector

Author

J.P. Richeux, A. Leger, J. H. Field, J. Perrier, M. Bourquin, G. Forconi, P. Bene, and Nicolas Produit

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), Physics::Instrumentation and Detectors, business.industry, Detector, Tracking (particle physics), Charged particle, Nuclear physics, Optics, Analog signal, Parallel processing (DSP implementation), business, Projection (set theory), Instrumentation, Beam (structure)
Abstract

A first-level charged particle trigger based on parallel processing and look-up tables has been developed for the L3 detector. It processes analog signals generated by the central tracking detector, a drift chamber with axial wires. The trigger decision is made on the total number of tracks, the number of coplanar pairs of tracks, or on more complicated topologies found in the projection normal to the beam axis. The system is very flexible and can be adjusted to a wide range of background conditions and tracking chamber efficiencies.

Published
1991

4. Progress in TPG construction [particle detector]

Author

F. Sauli, J.P. Richeux, M. Apollonio, P. Chimenti, G. Musso, G. Giannini, M. Lollo, V. Ableev, L. Roscilli, S. Gianì, Petar Temnikov, P. Bene, G. Chiefari, L. Ropelewski, P. Favaron, U. Gastaldi, E. Gschwendtner, F. Ambrosino, R. De Oliveira, G. Saracino, M. Rigato, M. Napolitano, E. Radicioni, M. G. Catanesi, J.-C. Legrand, A. Blonde, and V. Palladino

Subjects
Materials science, business.industry, Instrumentation, Electrical engineering, STRIPS, Active surface, Particle detector, Cathode, law.invention, Optics, Volume (thermodynamics), law, Resistor, Solenoidal magnetic field, business
Abstract

TPG is the acronym for a 3D imaging gas chamber with GEM amplification, hexaboard read-out and FADC electronics. We have constructed a TPG-head with three GEM foils (30 cm diameter) and a read-out board (30 cm diameter active surface) covered with 710000 hexagonal pads of 300 /spl mu/m size. The aligned pads are connected in parallel to one strip out of three sets of 576 parallel strips (500 /spl mu/m pitch). The three sets of strips run at 120 degrees from each other and at three different depths inside the hexaboard multi-layer structure. Each strip is read by FADC electronics. The TPG-head is under initial test in a small container with a drift volume 33 mm long and of 30 cm diameter. A 150 cm long drift volume inside a 0.7 Tesla solenoidal magnetic field has been prepared by using HARP-TPC instrumentation as a test bed.

Published
2004

5. READOUT ELECTRONICS DEVELOPMENT FOR THE ATLAS SILICON TRACKER

Author

R. Bonino, Yu. S. Velikzhanin, J.P. Richeux, A. Leger, Paul Seller, P. Aspell, Francis Anghinolfi, A. G. Clark, A. Chilingarov, H. Kambara, D. Campbell, K. Borer, E.A. Kuper, M.G. Fedotov, Pierre Jarron, Erik H.M. Heijne, A. Reichold, Xin Wu, G. N. Taylor, J.C. Santiard, H. Verweij, C. Goessling, J. Beringer, B. Lisowski, D. La Marra, and P. G. Murray

Subjects
Physics, Nuclear and High Energy Physics, business.industry, Physics::Instrumentation and Detectors, Amplifier, ATLAS experiment, Detector, Analog-to-digital converter, Integrated circuit, Chip, Multiplexing, Memory controller, law.invention, Computer Science::Hardware Architecture, law, Hardware_INTEGRATEDCIRCUITS, business, Instrumentation, Computer hardware
Abstract

We present the status of the development of the readout electronics for the large area silicon tracker of the ATLAS experiment at the LHC, carried out by the CERN RD2 project. Our basic readout concept is to integrate a fast amplifier, analog memory, sparse data scan circuit and analog-to-digital convertor (ADC) on a single VLSI chip. This architecture will provide full analog information of charged particle hits associated unambiguously to one LHC beam crossing, which is expected to be at a frequency of 40 MHz. The expected low occupancy of the ATLAS inner silicon detectors allows us to use a low speed (5 MHz) on-chip ADC with a multiplexing scheme. The functionality of the fast amplifier and analog memory have been demonstrated with various prototype chips. Most recently we have successfully tested improved versions of the amplifier and the analog memory. A piecewise linear ADC has been fabricated and performed satisfactorily up to 5 MHz. A new chip including amplifier, analog memory, memory controller, ADC, and data buffer has been designed and submitted for fabrication and will be tested on a prototype of the ATLAS silicon tracker module with realistic electrical and mechanical constraints.

Published
1995

6. The L3 silicon microvertex detector

Author

Roberto Castello, Alain Hervé, A. Gabbanini, P. Extermann, P. Lecomte, A. Bay, J. S. Kapustinsky, E. Babucci, J. Xu, M. Lebeau, G. Passaleva, E. Fiandrini, R. Leiste, S. R. Hou, G. Landi, A. Chen, Maurizio Biasini, J.P. Richeux, Willis Lin, B. Schöneich, S. Easo, Gian Mario Bilei, H. Kirst, L. Baksay, S. Pensotti, J. Kornis, H. Tuchscherer, M. Pauluzzi, T. Hofer, J. Ding, G. Terza, P. Ladron, F. Tonisch, Attilio Santocchia, M. L. Brooks, Roberto Battiston, O. Adriani, G. J. Bobbink, G.B. Mills, P. Schmitz, C. Camps, P. Duinker, Joel Goldstein, K. Hangarter, G. F. Susinno, R. Massetti, D. DiBitonto, G. Castellini, A. Marin, W. Baur, Gy L. Bencze, R. Siedling, W. J. Burger, M. Hofer, Claude Hauviller, S. Waldmeier, T. N. Thompson, R. Weill, D. Kim, E. Lejeune, G. Zilizi, D. M. Lee, Andrea Baschirotto, E. Perrin, K. Subham, Giovanni Ambrosi, S. P. Ahlen, L. Djambazov, M. Sachwitz, A. Gougas, T. Paul, A. Adam, Wolfgang Lohmann, H. Vogt, B. Bertucci, J. Alcaraz, W. W. Kinnison, S. C. Yeh, Maria Isabel Josa, N. Produit, V. R. Krastev, J. Tóth, S. Wang, M. Acciarri, G. Viertel, B. Zhou, P. G. Rancoita, H. Nowak, G. Trowitzsch, V. Commichau, M. Okle, M. Bosetti, T. E. Coan, B. Checcuccl, M. Rattaggi, M. Caria, M. Tesi, J. Boissevain, L. Servoli, and J. Busenitz

Subjects
Physics, Nuclear and High Energy Physics, Silicon, Physics::Instrumentation and Detectors, business.industry, Detector, Readout electronics, chemistry.chemical_element, Monitoring system, Displacement (vector), Nuclear physics, Optics, Data acquisition, chemistry, Radiation monitoring, High Energy Physics::Experiment, Detectors and Experimental Techniques, business, Instrumentation
Abstract

The design and construction of the silicon strip microvertex detector (SMD) of the L3 experiment at LEP are described. We present the sensors, readout electronics, data acquisition system, mechanical assembly and support, displacement monitoring systems and radiation monitoring system of the recently installed double-sided, double-layered SMD. This detector utilizes novel and sophisticated techniques for its readout.

Published
1994

7. High p$_{T}$ trigger electronics for a large orthogonal readout electromagnetic calorimeter

Author

W.H. Range, L. Rosselet, J.P. Richeux, G. Cecchet, M. N. Kienzle-Focacci, A. Rückstuhl, J. N. Jackson, S. Pensotti-Rancoita, L. Fluri, M. Werlen, P. Bene, D. Perrin, S. W. Snow, J. Rutschmann, J. Bovier, A. Maxwell, L.J. Carroll, Laura Perini, J.G. Lynch, M. Martin, E. Bonvin, D. Frame, G. Costa, J. R. Fischer, M. Donnat, R. M. Turnbull, P.A. Dorsaz, R. Lucock, S. Jack, A. S. Thompson, P. J. Negus, M. Bonesini, J.J. Myerscough, M. Mazzanti, Jon-Paul R. Wells, D. Cavalli, M. Kelly, F. Gianotti, L. Mathys, L. Mandelli, and A. J. Cass

Subjects
Physics, Time delay and integration, Nuclear and High Energy Physics, Adder, Calorimeter (particle physics), business.industry, Electrical engineering, Pulse (physics), Flash (photography), Electromagnetic calorimeter, Electronics, Detectors and Experimental Techniques, business, Instrumentation
Abstract

A trigger system has been designed and built to select events containing high p T electromagnetic showers detected in a large calorimeter with orthogonal readout. The electronics include analog adders with up to 123 inputs, pulse shapers with 20 ns integration time, 100 MHz flash ADCs and ECL loop-up tables. The total number of input channels is 3072 and the trigger decision is made in about 120 ns.

Published
1987

8. STATUS OF THE L3 SILICON MICROVERTEX DETECTOR

Author

G. M. Bilei, W.Y. Chen, A. Chen, M. Pauluzzi, T. Paul, Alain Hervé, P. Bene, Giovanni Ambrosi, V. R. Krastev, A. Bay, S. Wang, R. Leiste, J.S. Kapustinski, M. Caria, J.P. Richeux, K. Hangarter, G. Matay, G. B. Mills, T. Pennington, Gy L. Bencze, B. Checcucci, D. M. Lee, H. Kirst, G. Passaleva, G. Castellini, K. Subhani, J. Busenitz, B. Zhou, M. Bosetti, T. E. Coan, P. Schmitz, C. Camps, O. Adriani, G. Terzi, M. MacDermott, P. Extermann, H. Hofer, G. Trowitzsch, M. Rattaggi, J. Boissevain, G. Barbagli, T.C. Thompson, R. Weill, W. J. Burger, W. W. Kinnison, S. C. Yeh, M. Lebeau, E. Fiandrini, Paul Lecoq, Roberto Castello, K. Lübelsmeyer, A. Gougas, E. Babucci, Wolfgang Lohmann, B. Bertucci, E. Perrin, V. Commichau, A. Marin, G. Viertel, D. DiBitonto, H. Vogt, L. Servoli, M. L. Brooks, G. Landi, M. Sachwitz, W. T. Lin, S. Pensotti, F. Masciocchi, Claude Hauviller, S. Waldmeier, Attilio Santocchia, Andrea Baschirotto, B. Schöneich, P. G. Rancoita, H. Nowak, F. Tonisch, Roberto Battiston, G.B. Miller, S. Easo, R. Siedling, Maurizio Biasini, and S. P. Ahlen

Subjects
Capacitive coupling, Physics, Nuclear and High Energy Physics, Silicon, Physics::Instrumentation and Detectors, business.industry, Detector, Resolution (electron density), chemistry.chemical_element, Atomic and Molecular Physics, and Optics, Particle detector, Semiconductor detector, Nuclear physics, chemistry, Measuring instrument, Optoelectronics, High Energy Physics::Experiment, business, Image resolution
Abstract

A report on the status of the construction of the L3 Silicon Microvertex Detector is presented here. The detector will consist of two double sided AC coupled silicon layers equipped with rφ and z readout with an expected intrinsic resolution of ≈ 6 μ m and ≈ 25 μ m respectively. A description of the detector with its mechanical support, alignment system and readout electronics is presented.

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