Enhancing the CDF's B physics program with a faster data acquisition system.

Technical Report · Wed Mar 02 00:00:00 EST 2011

DOI:https://doi.org/10.2172/1009125· OSTI ID:1009125

Maksimovic, Petar

The physics program of Run II at the Tevatron includes precision electroweak measurements such as the determination of the top quark and W boson masses; bottom and charm physics including the determination of the B{sub s} and D{sup 0} mixing parameters; studies of the strong interaction; and searches for the Higgs particle, supersymmetric particles, hidden space-time dimensions and quark substructure. All of these measurements benefit from a high-resolution tracking detector. Most of them rely heavily on the efficient identification of heavy flavored B hadrons by detection of displaced secondary vertices, and are enhanced by the capability to trigger on tracks not coming from the primary vertex. This is uniquely provided by CDF's finely-segmented silicon detectors surrounding the interaction region. Thus CDF experiment's physics potential critically depends on the performance of its silicon detectors. The CDF silicon detectors were designed to operate up to 2-3 fb{sup -1} of accumulated pji collisions, with an upgrade planned thereafter. However, the upgrade project was canceled in 2003 and Run II has been extended through 2011, with an expected total delivered integrated luminosity of 12 fb{sup -1} or more. Several preventive measures were taken to keep the original detector operational and maintain its performance. The most important of these are the decrease in the operating temperature of the detector, which reduces the impact of radiation exposure, and measures to minimize damage due to integrated radiation dose, thermal cycles, and wire bond resonance conditions. Despite these measures the detectors operating conditions continue to change with issues arising from radiation damage to the sensors, aging infrastructure and electronics. These, together with the basic challenges posed by the inaccessibility of the detector volume and large number (about 750 thousand) of readout channels, make the silicon detector operations the single most complex and high priority job in the CDF experiment.

• Research Organization: Johns Hopkins Univ., Baltimore, MD (United States)
• Sponsoring Organization: Office of Energy Research
• DOE Contract Number: FG02-04ER41337
• OSTI ID: 1009125
• Report Number(s): Final Technical Report; TRN: US1201289
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AGING
DATA ACQUISITION SYSTEMS
DETECTION
DIMENSIONS
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
HADRONS
INTERMEDIATE BOSONS
LUMINOSITY
PERFORMANCE
PHYSICS
QUARKS
RADIATION DOSES
RADIATIONS
RESONANCE
SENSORS
SILICON
SPACE-TIME
SPARTICLES
STRONG INTERACTIONS
T QUARKS