CDF experiment:

• Example Z events: Two events are shown, one Z --> two electrons and one Z --> two muons. Each event has a tracking view showing the charged tracks in the bend plane (we call this the r-phi view for radius-azimuth) of the the 1.4 Tesla CDF solenoid magnet. The diameter of the circle is about 3 meters. The "lego" plot is also shown for each event -- with "stacks" of electromagnetic (red) and hadronic (blue) energy seen in the calorimeter towers. Think of this "lego" plot as the surface of a cylinder around the solenoid unwrapped into a plane. Note in the Z--> two muon event the calorimeter energy scale is very small since the muons penetrate the calorimeter and leave only "minimum ionizing" pulse height. So we identify the muons from their charged tracks and hits in the Muon Chambers represented by the square box drawn outside of the 3 meter tracking circle. This box is not drawn to scale -- in the experiment the box is about 10 meters by 10 meters. Look closely to see the "hits", drawn as x's in line with nearly straight (therefore high momentum) tracks in the circle. In the lego plot we have drawn vertical lines to represent the energy of the muon tracks. Note the difference in the Z --> ee event where there are straight tracks pointing at clumps of red (electromagnetic) energy and no hits in the muon chambers.
• "GOLDEN" Top Event - This event has a 109 GeV e+, and 4 Jets of (1) 90, (2) 77, (3) 64, and (4) 38 GeV. Jets (1) & (4)are tagged as b-jets by the CDF Silicon Vertex Detector. Jets (1,2,3) are from top; (2) & (3) are from a W. The event fit gives a Top Quark Mass of 170 +- 10 GeV.
• CDF Central Detector: In this closeup of the central part of the CDF detector one can see various detector elements, as well as some of the cables and electronics used to collect information from the parts of the detector. The boxes mounted on the face of the orange structure contain electronics. The black semicircles to the right and left are the hadronic calorimeters. They detect particles known as hadrons by causing the particle to collide many times with iron plates. In these collisions, other particles are produced. These particles cross sheets of scintillating plastic where they give off small flashes of light. A measurement of the total amount of light measures the energy of the hadron.
• CDF Forward Detectors : The central detector represents about 1/3 of the total detector. There are also two forward detectors; so named because they are arranged along the main accelerator beam in front of and in back of the central detector. In this photograph, one can see these detectors in the assembly hall area outside the main machine before they were installed.
• 3-Dimensional COLOR View of CDF in Collider Run I, 1992-96
• Schematic COLOR Quarter Section of most of CDF in Collider Run I, 1992-96: Highly schematic CDF drawing designed for conference talks. Same view as the above quarter section, but with more emphasis on the central detector and tower geometry. Note that the position and size of the forward calorimeter is not to scale.
• Quarter Section of CDF in Collider Run I, 1992-1996: CDF as configured during Collider Run I shown as one-quarter of an elevation view. A plan view would look the same since the detector is nearly symmetric when rotated about the Tevatron beam line. Note the interaction point is in the lower left corner.