[en] The Collider Detector at Fermilab (CDF) is a general purpose detector used to study the world's highest energy p anti p collisions at the Fermilab Tevatron. Upgrades to CDF to enable it to function as the Tevatron evolves are described. The upgrade plans are to: (1) Replace the plug and forward gas calorimeters with new scintillator-based calorimeters. (2) Replace the Central Tracking Chamber with a new device with shorter drift distance (Central Outer Tracker). (3) Replace the silicon vertex detector with a longer double-sided device with faster readout. (4) Add a new Intermediate Forward Tracker between the silicon vertex detector and the Central Outer Tracker to enhance pattern recognition capability at high luminosities and to provide tracking in the region 1.0 ≤ η ≤ 2.0. (5) Upgrade the front-end electronics, trigger and data acquisition systems to accommodate data collection with shorter bunch spacing and higher rates

[en] The radiative decay J/psi → ß eta ππ has been observed in data taken with the Crystal Ball detector at the SPEAR e⁺e^- storage ring. In addition to the well-known eta', the eta ππ mass spectrum shows a broad enhancement centered at approx. 1700 MeV. There is no explicit evidence for the l(1440) in the eta ππ mass spectrum

[en] The Collider Detector at Fermilab (CDF) has been used to study proton-antiproton collisions at the Fermilab Tevatron since 1985. Over the years, the detector has evolved steadily to increase its physics capability and to keep pace with improvements to the Tevatron. Fermilab is currently building a new Main Injector accelerator which will lead to even larger luminosity values. This paper describes upgrades to CDF that will allow one to exploit the higher luminosity of the Main Injector

[en] We have developed a fast and easily varied simulation of a ''generic'' 4π calorimeter. The program enables one to study the gross features of detector response for various physics processes. The simulation program is described and some examples of its use are presented. 3 refs., 6 figs

[en] We present results of calculations undertaken to study detector dependent effects that contribute to the energy resolution of jets. To accomplish this study, we have developed a fast, easily varied simulation of a generic 4π calorimeter. Physics processes used for benchmarks of performance were the transverse energy resolution of 1 TeV jets and the mass resolution of W → 2 jets, for W's with 500 GeV transverse momentum. 3 refs

[en] The magnetic field of the CDF (Collider Detector at Fermilab) superconducting solenoid has been measured using a newly designed field mapping device. NMR probes and a system of three orthogonal search coils were used as sensing elements. The central uniform region inside the solenoid coil and the fringing field in the conical end plugs were measured. The detailed field distribution and its characteristics are described

[en] For the past year or so we have been examining the properties and limitations of the beam bugs in use in the ETA program at LLNL with a view toward improving the accuracy of beam position and current measurements. When considering measurements of beam position, it is very important to distinguish between relative and absolute position measurements. A relative position measurement determines only the amplitude and direction of the motion of the beam within the transport tube. If one knew where the beam was, one could determine its new position. A relative measurement is essentially independent of errors in mechanical fabrication or electrical components. The minimum measurable displacement is only limited by the strength of the electrical signals or the signal to noise ratio of the position signal. An absolute position measurement is much more challenging. All inaccuracies in mechanical components and fabrication, electrical components, installation and assembly errors must be considered and controlled along with the issues common to relative position measurements. However, if the object is to strike a small specific point on a target or pass the beam through a small hole, absolute beam position measurements are required. The following is a summary of our progress including conclusions and recommendations for developments and improvements. This is, of course, only a step in beam bug development and there is plenty of room for others to contribute

[en] Triggered, multi-channel, surface discharges or surface flashover switching have been investigated as a low inductance, low pulse rate switch for conducting large currents. This paper discusses the investigation of UV (355 nm) laser triggered, single channel, low inductance, ns closure and sub-ns jitter switches for applications in switching high dielectric constant, compact pulse forming lines into accelerator loads. The experimental arrangement for evaluating the switch performance and for measuring the high field dielectric constant of the pulse forming lines is presented. Experimental results of delay and jitter measurements versus optical energy on the flashover surface and dc electric field charge

[en] The authors present results of calculations undertaken to study detector dependent effects that contribute to the energy resolution of jets. To accomplish this study, They have developed a fast, easily varied simulation of a generic 4π calorimeter. Physics processes used for benchmarks of performance were the transverse energy resolution of 1 TeV jets and the mass resolution of W → 2 jets, for W's with 500 GeV transverse momentum

[en] A QCD Monte Carlo program and a ''generic'' calorimeter simulation are used to study the measurement of missing transverse energy at SSC energies. Energy resolution, segmentation, and calorimeter thickness are considered