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A Synchrotron phase detector for the Fermilab Booster

Description: A synchrotron phase detector is diagnostic tool for measuring the relative phase between the accelerating field and the beam. One has been implemented in the Fermilab Booster. This is probably the first time for the Booster that the accelerating voltage seen by the beam can be experimentally determined from the information of the synchrotron phase measurement and the existing total rf accelerating voltage (RFSUM) signal without using the calculated synchrotron phase values.
Date: March 17, 2004
Creator: Yang, Xi & Padilla, Rene D
Partner: UNT Libraries Government Documents Department

Upgrade and Operation of the DZero Central Track Trigger

Description: The D{O} experiment at the Fermilab p{bar p} Tevatron collider (Batavia, IL, USA) has undergone significant upgrades in anticipation of high luminosity running conditions. As part of the upgrade, the capabilities of the Central Track Trigger (CTT) to make trigger decisions based on hit patterns in the Central Fiber Tracker (CFT) have been much improved. We report on the implementation, commissioning and operation of the upgraded CTT system.
Date: April 1, 2007
Creator: Pangilinan, M.P.; U., /Boston; Buehler, M.D. & U., /Virginia
Partner: UNT Libraries Government Documents Department

Fast-cycling superconducting synchrotrons and possible path to the future of US experimental high-energy particle physics

Description: The authors outline primary physics motivation, present proposed new arrangement for Fermilab accelerator complex, and then discuss possible long-range application of fast-cycling superconducting synchrotrons at Fermilab.
Date: February 1, 2008
Creator: Piekarz, Henryk
Partner: UNT Libraries Government Documents Department

Initial experience with the CDF layer 00 silicon detector

Description: We report on initial experience with the CDF Layer 00 Detector. Layer 00 is an innovative, low-mass, silicon detector installed in CDF during the upgrade for Run 2A of the Tevatron. Noise pickup present during operation at CDF is discussed. An event-by-event pedestal correction implemented by CDF is presented. This off-line solution prevents L00 from being used in the current incarnation of the on-line displaced track trigger. Preliminary performance of Layer 00 is described.
Date: March 17, 2003
Creator: Hill, C.
Partner: UNT Libraries Government Documents Department

CDF Run II status and prospects

Description: Run II at the Tevatron Collider started at the beginning of March 2001. With extensive upgrades on both detectors and electronics the CDF II began to collect data. This paper reviews early Run II physics results obtained by analyzing data collected before the middle of June 2002. At the present the understanding of the detector performances is rather high so many analysis are already underway.
Date: February 6, 2003
Creator: Pagliarone, C.
Partner: UNT Libraries Government Documents Department

B physics at CDF

Description: B physics is at the core of the CDF agenda for Run II. With the Tevatron performance gradually improving, samples of data corresponding to about 70 pb{sup -1} are now available. Due to improved detector capabilities these data already allow one to improve a number of Run I results, as well as perform a series of new measurements. We present an overview of the current state of B physics at CDF.
Date: June 4, 2003
Creator: Anikeev, K.
Partner: UNT Libraries Government Documents Department

The Ssart of Run II at CDF

Description: After a hiatus of almost 6 years and an extensive upgrade, Tevatron, the world largest proton-antiproton collider, has resumed the operation for the so called RUN II. In this paper we give a brief overview of the many new features of the Tevatron complex and of the upgraded CDF experiment, and show the presently achieved detector performances as well as highlights of the RUN II physics program in the beauty and electroweak sector.
Date: October 29, 2002
Creator: Rescigno, Marco
Partner: UNT Libraries Government Documents Department

Results on CP violation from CDF

Description: The CDF experiment at the Tevatron collider is collecting a large sample of fully hadronic decays of Bottom and Charm mesons. First CP Violation measurements have been performed using the initial data, achieving results which clearly state the CDF ability in extracting significant CKM information from p{bar p} collisions. The first results on direct CP asymmetries on Charm and Bottom decays and future plans from the CDF experiment are discussed in this paper.
Date: December 11, 2003
Creator: Giagu, S.
Partner: UNT Libraries Government Documents Department

D. acosta et al., the cdf collaboration,

Description: We present a measurement of the ratio of top-quark branching fractions R = {Beta}(t {yields} Wb)/{Beta}(t {yields} Wq) using lepton-plus-jets and dilepton data sets with integrated luminosity of {approx}162 pb{sup -1} collected with the Collider Detector at Fermilab during Run II of the Tevatron. The measurement is derived from the relative numbers of t{bar t} events with different multiplicity of identified secondary vertices. We set a lower limit of R > 0.61 at 95% confidence level.
Date: May 27, 2005
Creator: Physics, Top & Collid, Measurement of B (t -> Wb)/B(t -> Wq) at the
Partner: UNT Libraries Government Documents Department

Prospects in CP violation measurements at the Tevatron Collider

Description: The Fermilab Tevatron Collider is currently the most copious source of b-hadrons, thanks to the large b{bar b} production cross-section in 1.96 TeV p{bar p} collisions. Recent detector upgrades allow for a wide range of CP violation and flavor-mixing measurements that are fully competitive (direct asymmetries in self-tagging modes) or complementary (asymmetries of B{sub s} and b-baryons decays) with B-factories. In this paper we review some recent CP violation results from the D0 and CDF II Collaborations and we discuss the prospects for future measurements.
Date: June 22, 2004
Creator: Tonelli, Diego
Partner: UNT Libraries Government Documents Department

Tevatron Collider Run II status and novel technologies for luminosity upgrades

Description: Over the past 2 years the Tevatron peak luminosity steadily progressed and reached the level of 92e30 cm-2s-1 which exceeds the original Run IIa goal. Over 0.57fb-1 have being delivered to each CDF and D0 experiments since the beginning of the Run II. In parallel to the Collider operation, we have started a project of the luminosity upgrade which should lead to peak luminosities of about 270e30 and total integrated luminosity of 4.4-8.5 fb-1 through FY2009. In this paper we describe the status of the Tevatron Collider complex, essence of the upgrades and novel accelerator technologies to be employed.
Date: July 20, 2004
Creator: Shiltsev, Vladimir
Partner: UNT Libraries Government Documents Department

Tevatron Run II luminosity, emittances and collision point size

Description: The authors compare the Tevatron luminosity as measured by the CDF and D0 experiments with that computed from machine characteristics. They also compare the CDF measurements for the size of the interaction region with that predicted by machine parameters. Although these results are still preliminary, they show promise as a useful crosscheck of the instrumentation and our understanding of the Tevatron machine characteristics.
Date: June 9, 2003
Creator: al., Jean Slaughter et
Partner: UNT Libraries Government Documents Department

The CDF data handling system

Description: The Collider Detector at Fermilab (CDF) records proton-antiproton collisions at center of mass energy of 2.0 TeV at the Tevatron collider. A new collider run, Run II, of the Tevatron started in April 2001. Increased luminosity will result in about 1 PB of data recorded on tapes in the next two years. Currently the CDF experiment has about 260 TB of data stored on tapes. This amount includes raw and reconstructed data and their derivatives. The data storage and retrieval are managed by the CDF Data Handling (DH) system. This system has been designed to accommodate the increased demands of the Run II environment and has proven robust and reliable in providing reliable flow of data from the detector to the end user. This paper gives an overview of the CDF Run II Data Handling system which has evolved significantly over the course of this year. An outline of the future direction of the system is given.
Date: November 5, 2003
Creator: Litvintsev, Dmitry O.
Partner: UNT Libraries Government Documents Department

CDF at the Tevatron collider in Run 2

Description: Run 2 of the Tevatron began in early 2001 after extensive upgrades to both the machine and the CDF and D0 detectors. For CDF, new tracking detectors, increased muon coverage, state-of-the-art front end electronics, pipelined triggering, and a complete overhaul of the DAQ have made it a very powerful tool to explore physics of all kinds. The status of CDF in Run 2 is presented, along with a first glimpse of CDF data.
Date: April 3, 2002
Creator: Erbacher, Robin D.
Partner: UNT Libraries Government Documents Department

The architecture of the BTeV pixel readout chip

Description: The most striking feature of BTeV, a dedicated b physics experiment which is expected to begin running in 2008 in the new CZero interaction region of the Fermilab Tevatron, is that the experiment will use data from a pixel vertex detector to reconstruct tracks and vertices for every beam crossing. The lowest level trigger will be an impact parameter trigger designed to identify events containing reconstructable decays of charm and bottom particles[1]. An R&D program to develop a pixel readout chip optimized for the Tevatron was started at Fermilab in 1997, and is now nearing completion. The architecture of the BTeV pixel readout chip is described in this paper.
Date: December 3, 2002
Creator: Christian, David C
Partner: UNT Libraries Government Documents Department

Mobility of Tritium in Engineered and Earth Materials at the NuMIFacility, Fermilab: Progress report for work performed between June 13and September 30, 2006

Description: This report details the work done between June 13 andSeptember 30, 2006 by Lawrence Berkeley National Laboratory (LBNL)scientists to assist Fermi National Accelerator Laboratory (Fermilab)staff in understanding tritium transport at the Neutrino at the MainInjector (NuMI) facility. As a byproduct of beamline operation, thefacility produces (among other components) tritium in engineeredmaterials and the surrounding rock formation. Once the tritium isgenerated, it may be contained at the source location, migrate to otherregions within the facility, or be released to theenvironment.
Date: October 25, 2006
Creator: Pruess, Karsten; Conrad, Mark; Finsterle, Stefan; Kennedy, Mack; Kneafsey, Timothy; Salve, Rohit et al.
Partner: UNT Libraries Government Documents Department

High luminosity operation of the Fermilab accelerator complex

Description: Run-II at Fermilab is progressing steadily. In the Run-II scheme, 36 antiproton bunches collide with 36 proton bunches at the CDF and D0 interaction regions in the Tevatron at 980 GeV per beam. The current status and performance of the Fermilab Accelerator complex is reviewed. The plan for Run-II, accelerator upgrades and integration of the Recycler in the accelerator chain will be presented.
Date: July 15, 2003
Creator: Mishra, Shekhar
Partner: UNT Libraries Government Documents Department