A Measurement of the t anti-t Production Cross Section in p anti-p Collisions at s**(1/2) = 1.96-TeV using Soft Muon Tagging Page: 24 of 131
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//7 - C~ENTA DRFT CHAMBER
.~ . HARIIC CALORIMETER
Ml DRIFT CHAMBERS
SELSHIELDING
---- ---- --- ---- MUO SC INT ILLATOR
ISL (3 LAYERS)
04 -- VX FFARELS
Sk TEF CT F IT EBO)
S LEN I [ OIL
FFESH WEF DETECTOR
T ~~ 11EFA DETECTOF
- - - -- - - - - ---EL - 0 FT
n 2 0 1 4 n6f
Figure 2.4: One half of the CDF II detector from an elevation view. The various sub-detector
systems are symmetric both azimuthally and forward-backward.
particle energy performed between these two regions. In general, the CDF subsystems can be divided
into several categories: particle tracking systems, calorimetry, and muon detectors. Data is collected
using a triggering system that uses the information from the CDF subdetectors to determine what
events are of interest for further study. CDF is composed of many subsystems, so the remainder of
this chapter will only focus on those components of the detector that are relevant to the analysis
described in this thesis. A detailed description of the the entire CDF II apparatus can be found
in [17].
2.2.1 Tracking Systems
Tracking information is crucial for the measurement of particle momenta and identification of particle
charge, and CDF employs several tracking systems to record the paths of charged particles as they
pass through the detector. The tracking systems are contained inside a solenoid with a uniform
1.4 T magnetic field that runs parallel to the beam axis to make the measurement of particle charge
and momentum possible. Charged particles passing through the solenoid's magnetic field follow a
helical path. The radius of this helix is related to the transverse momentum of the particle:
0.3B
PT =2 , (2.2)12
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Grundler, Ulysses A. A Measurement of the t anti-t Production Cross Section in p anti-p Collisions at s**(1/2) = 1.96-TeV using Soft Muon Tagging, thesis or dissertation, May 1, 2008; Batavia, Illinois. (https://digital.library.unt.edu/ark:/67531/metadc901841/m1/24/: accessed March 28, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.