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Author : S. Belforte
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (554 download)
Download or read book The CDF Silicon Vertex Trigger for B Physics Study written by S. Belforte and published by . This book was released on 2001 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The CDF Silicon Vertex Trigger written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The CDF experiment's Silicon Vertex Trigger is a system of 150 custom 9U VME boards that reconstructs axial tracks in the CDF silicon strip detector in a 15[mu]sec pipeline. SVT's 35[mu]m impact parameter resolution enables CDF's Level 2 trigger to distinguish primary and secondary particles, and hence to collect large samples of hadronic bottom and charm decays. We review some of SVT's key design features. Speed is achieved with custom VLSI pattern recognition, linearized track fitting, pipelining, and parallel processing. Testing and reliability are aided by built-in logic state analysis and test-data sourcing at each board's input and output, a common inter-board data link, and a universal ''Merger'' board for data fan-in/fan-out. Speed and adaptability are enhanced by use of modern FPGAs.
Download or read book CDF - Secondary Vertex Trigger written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: At the beginning of 2002 a new data taking with an upgraded trigger system started for the CDF collaboration. One of the major improvements is the track trigger. A fast processor reconstructs tracks in the central drift chamber and the Silicon Vertex Tracker combines these tracks with the silicon vertex detector information to have track parameters with a precision as good as the offine reconstruction. This system allows CDF to trigger on tracks significantly displaced from the primary vertex with high efficiency for signal events like charm and beauty and to keep low background rates. The performances, in terms of resolution and efficiency, of both the processors are illustrated and the firsts physics results are discussed.
Author :
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (683 download)
Download or read book Silicon Vertex Tracker written by and published by . This book was released on 1999 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Silicon Vertex Tracker (SVT), currently being built for the CDF II experiment, is a hardware device that reconstructs 2-D tracks online using measurements from the Silicon Vertex Detector (SVXII) and the Central Outer Tracker (COT). The precise measurement of the impact parameter of the SVT tracks will allow, for the first time in a hadron collider environment, to trigger on events containing B hadrons that are very important for many studies, such as CP violation in the b sector and searching for new heavy particles decaying to b{bar b}. In this report we describe the overall architecture, algorithms and the hardware implementation of the SVT.
Download or read book The CDF Silicon Vertex Detector for Run II. written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The 8 layer, 720k channel CDF Run II silicon detector is an essential part of the heavy flavor tagging and forward tracking capabilities of the CDF experiment. A summary of the experience in commissioning and operating this double-sided detector during the first 2 years of Run II is presented. The performances of the silicon in term of resolution, efficiency are also described. The results of the studies of radiation damage and the expected operational limits are discussed. A short description of the SVT, the Level 2 Silicon Vertex Trigger, one of the major upgrades related to the new silicon device is also presented. Finally, some of the many physics results achieved by means of the new Silicon+SVT machinery are also reviewed.
Download or read book First CDF II Heavy Flavor Physics Results with the Silicon Vertex Trigger written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The renewed CDF II experiment recently re-started data taking. The data collected lately already provides insight in the heavy flavor capabilities of this p{bar p} experiment. As a benchmark of these possibilities we present two preliminary results: the measurement of the branching fractions BR(D{sup o} →??−) and BR(D{sup o} → K+K−) relative to BR(D{sup o} → K{sup ±}?{sup {-+}}) and the measurement of the invariant mass difference between D{sub s}{sup ±} →??{sup ±},? → K+K− and D{sup ±} →??{sup ±},? → K+K−. The preliminary results are BR(D{sup o} →?+?−)/BR(D{sup o} → K{sup {+-}}?{sup {-+}}) = 3.37 {+-} 0.20(stat) {+-} 0.16(sys)%, BR(D{sup o} → K+K−)/BR(D{sup o} → K{sup {+-}}?{sup {-+}}) = 11.17 {+-} 0.98(sys) % and?m (D{sub s} - D+) = 99.28 {+-} 0.43(stat) {+-} 0.27(sys) MeV/c2. All results are consistent with PDG expectations.
Author :
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (684 download)
Download or read book Performance and First Physics Results of the SVT Trigger at CDF II. written by and published by . This book was released on 2003 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the first time in a hadron collider, a novel trigger processor, the Silicon Vertex Trigger (SVT), allows to select the long-lived heavy flavor particles by cutting on the track impact parameter with a precision similar to that of the offline reconstruction. Triggering on displaced tracks has enriched the B-physics program by enhancing the B yields of the lepton-based triggers and opened up full hadronic triggering at CDF. After a first commissioning period, the SVT is fully operational, performing very closely to its design capabilities. System performance and first physics results based on SVT selected data samples are presented.
Author : Rudolf Frühwirth
Publisher : Springer Nature
ISBN 13 : 303065771X
Total Pages : 208 pages
Book Rating : 4.0/5 (36 download)
Download or read book Pattern Recognition, Tracking and Vertex Reconstruction in Particle Detectors written by Rudolf Frühwirth and published by Springer Nature. This book was released on 2021 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book is a comprehensive review of the methods and algorithms that are used in the reconstruction of events recorded by past, running and planned experiments at particle accelerators such as the LHC, SuperKEKB and FAIR. The main topics are pattern recognition for track and vertex finding, solving the equations of motion by analytical or numerical methods, treatment of material effects such as multiple Coulomb scattering and energy loss, and the estimation of track and vertex parameters by statistical algorithms. The material covers both established methods and recent developments in these fields and illustrates them by outlining exemplary solutions developed by selected experiments. The clear presentation enables readers to easily implement the material in a high-level programming language. It also highlights software solutions that are in the public domain whenever possible. It is a valuable resource for PhD students and researchers working on online or offline reconstruction for their experiments.
Download or read book The CDF Online Silicon Vertex Tracker written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Silicon Vertex Tracker (SVT) is the new trigger processor which reconstructs 2-D tracks with high speed and accuracy at the level 2 trigger of the CDFII experiment. SVT allows tagging events with secondary vertices and therefore enhances the CDFII B-physics capability. SVT has been fully assembled and operational since the beginning of Tevatron RunII in April 2001. In this paper we briefly review the SVT design and physics motivation and then describe its performance during the early phase of CDF RunII.
Author : Emilio Borchi
Publisher : World Scientific
ISBN 13 : 9814482579
Total Pages : 795 pages
Book Rating : 4.8/5 (144 download)
Download or read book Astroparticle, Particle And Space Physics, Detectors And Medical Physics Applications - Proceedings Of The 8th Conference written by Emilio Borchi and published by World Scientific. This book was released on 2004-07-05 with total page 795 pages. Available in PDF, EPUB and Kindle. Book excerpt: The exploration of the subnuclear world is carried out through increasingly complex experiments covering a wide range of energies and in a large variety of environments — from particle accelerators and underground detectors to satellites and space laboratories. For these research programs to succeed, novel techniques, new materials and new instrumentation need to be used in detectors, often on a large scale. This book reviews the advances made in all technological aspects of the experiments at various stages.The proceedings have been selected for coverage in:• Index to Scientific & Technical Proceedings® (ISTP® / ISI Proceedings)• Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)• CC Proceedings — Engineering & Physical Sciences
Author : Pier-giorgio Rancoita
Publisher : World Scientific
ISBN 13 : 981447066X
Total Pages : 1063 pages
Book Rating : 4.8/5 (144 download)
Download or read book Astroparticle, Particle And Space Physics, Detectors And Medical Physics Applications - Proceedings Of The 10th Conference written by Pier-giorgio Rancoita and published by World Scientific. This book was released on 2008-06-30 with total page 1063 pages. Available in PDF, EPUB and Kindle. Book excerpt: The exploration of the subnuclear world is done through increasingly complex experiments covering a wide range of energies and in a large variety of environments — from particle accelerators and underground detectors to satellites and space laboratories. For these research programs to succeed, novel techniques, new materials and new instrumentation need to be used in detectors, often on a large scale. Hence, particle physics is at the forefront of technological advancement and leads to numerous applications. Among these, medical applications have a particular importance due to the health and social benefits they bring. This volume reviews the advances made in all technological aspects of current experiments in the field.
Download or read book All Hadronic B Decay Trigger with the CDF Silicon Vertex Tracker written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon Vertex tracks are of fundamental importance for reconstructing B meson decays at a hadron collider. The upgraded CDF detector will deploy an online Silicon Vertex Tracker in the level 2 trigger. We have studied how this new device exploits the Tevatron large B meson production to select hadronic B decays fundamental for measuring CP violation and B{sub s} mixing.
Author : Frank Hartmann
Publisher : Springer
ISBN 13 : 3540447741
Total Pages : 211 pages
Book Rating : 4.5/5 (44 download)
Download or read book Evolution of Silicon Sensor Technology in Particle Physics written by Frank Hartmann and published by Springer. This book was released on 2008-12-03 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the post era of the Z and W discovery, after the observation of Jets at UA1 and UA2 at CERN, John Ellis visioned at a HEP conference at Lake Tahoe, California in 1983 “To proceed with high energy particle physics, one has to tag the avour of the quarks!” This statement re ects the need for a highly precise tracking device, being able to resolve secondary and tertiary vertices within high-particle densities. Since the d- tance between the primary interaction point and the secondary vertex is proportional tothelifetimeoftheparticipatingparticle,itisanexcellentquantitytoidentifypar- cle avour in a very fast and precise way. In colliding beam experiments this method was applied especially to tag the presence of b quarks within particle jets. It was rst introduced in the DELPHI experiment at LEP but soon followed by all collider - periments to date. The long expected t quark discovery was possible mainly with the help of the CDF silicon vertex tracker, providing the b quark information. In the beginning of the 21st century the new LHC experiments are beginning to take 2 shape. CMS with its 206m of silicon area is perfectly suited to cope with the high luminosity environment. Even larger detectors are envisioned for the far future, like the SiLC project for the International Linear Collider. Silicon sensors matured from small 1in. single-sided devices to large 6in. double-sided, double metal detectors and to 6in. single-sided radiation hard sensors.
Download or read book Performance of the CDF Online Silicon Vertex Tracker written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Online Silicon Vertex Tracker (SVT) is the new trigger processor dedicated to the 2-D reconstruction of charged particle trajectories at the Level 2 of the CDF trigger. The SVT links the digitized pulse heights found within the Silicon Vertex detector to the tracks reconstructed in the Central Outer Tracker by the Level 1 fast track finder. Preliminary tests of the system took place during the October 2000 commissioning run of the Tevatron Collider. During the April-October 2001 data taking it was possible to evaluate the performance of the system. In this paper we review the tracking algorithms implemented in the SVT and we report on the performance achieved during the early phase of run II.
Author : Michele Barone
Publisher : World Scientific
ISBN 13 : 981448735X
Total Pages : 861 pages
Book Rating : 4.8/5 (144 download)
Download or read book Advanced Technology And Particle Physics - Proceedings Of The 7th International Conference On Icatpp-7 written by Michele Barone and published by World Scientific. This book was released on 2002-11-28 with total page 861 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book features up-to-date technology applications to radiation detection. It synthesises several techniques of and approaches to radiation detection, covering a wide range of applications and addressing a large audience of experts and students.Many of the talks are in fact reviews of particular topics often not covered in standard books and other conferences, for instance, the medical physics section. To present these medical physics talks is crucial, since a large fraction of the community in medical physics are from the particle physics community. The same feature is true for astroparticle and space physics, which are relatively new fields.This book is unique in its scope. Except for IEEE, there is no other conference in the world that presents such a wide coverage of advanced technology applied to particle physics. However, unlike IEEE, more room is made in the book for reviews and general talks.
Author : George W. S. Hou
Publisher : Springer
ISBN 13 : 3540927921
Total Pages : 151 pages
Book Rating : 4.5/5 (49 download)
Download or read book Flavor Physics and the TeV Scale written by George W. S. Hou and published by Springer. This book was released on 2009-06-10 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ?avor sector carries the largest number of parameters in the Standard Model of particle physics. With no evident symmetry principle behind its existence, it is not as well understood as the SU(3)×SU(2)×U(1) gauge interactions. Yet it tends to be underrated, sometimes even ignored, by the erudite. This is especially so on the verge of the LHC era, where the exploration of the physics of electroweak symmetry breaking at the high energy frontier would soon be the main thrust of the ?eld. Yet, the question of “Who ordered the muon?” by I. I. Rabi lingers. We do not understand why there is “family” (or generation) replication. That three generations are needed to have CP violation is a partial answer. We do not understand why there are only three generations, but Nature insists on (just about) only three active neutrinos. But then the CP violation with three generations fall far short of what is needed to generate the baryon asymmetry of the Universe. We do not understand why most fermions are so light on the weak symmetry breaking scale (v. e. v. ), yet the third-generation top quark is a v. e. v. scale particle. We do not understand why quarks and leptons look so different, in particular, why neutrinos are rather close to being massless, but then have (at least two) near maximal mixing angles. We shall not, however, concern ourselves with the neutrino sector. It has a life of its own.
Download or read book The CDF Silicon Vertex Tracker written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Silicon Vertex Tracker is the CDF online tracker which will re- construct 2D tracks using hit positions measured by the Silicon Vertex Detector and Central Outer Chamber tracks found by the eXtremely Fast Tracker. The precision measurement of the track impact parameter will allow triggering on events contain- ing B hadrons. This will allow the investigation of several important problems in B physics, like CP violation and Bs mixing, and to search for new heavy particles decaying to b{anti b}.
