[en] The design of a fast MWPC amplifier for the beam chambers and the absorber chamber is completed and all parts are on order. A prototype 16 channel board has been built and satisfactorily tested. Artwork is completed for the board and out to be photographed. The board fabrication contract has been let. Listed below is a summary of the amplifier characteristics as well as test results obtained with the prototype

[en] The Fermilab Collider Detector Facility (CDF) is a large detector system designed to study anti pp collisions at very high center of mass energies. The central detector for the CDF shown employs a large axial magnetic field volume instrumented with a central tracking chamber composed of multiple layers of cylindrical drift chambers and a pair of intermediate tracking chambers. The purpose of this system is to determine the trajectories, sign of electric charge, and momenta of charged particles produced with polar angles between 10 and 170 degrees. The magnetic field volume required for tracking is approximately 3.5 m long an 3 m in diameter. To provide the desired δp_Tp_T less than or equal to 1.5% at 50 GeV/c using drift chambers with approx. 200μ resolution the field inside this volume should be 1.5 T. The field should be as uniform as is practical to simplify both track finding and the reconstruction of particle trajectories with the drift chambers. Such a field can be produced by a cylindrical current sheet solenoid with a uniform current density of 1.2 x 10₆ A/m (1200 A/mm) surrounded by an iron return yoke. For practical coils and return yokes, both central electromagnetic and central hadronic calorimetry must be located outside the coil of the magnet. This geometry requires that the coil and the cryostat be thin both in physical thickness and in radiation and absorption lengths. This dual requirement of high linear current density and minimal coil thickness can only be satisfied using superconducting technology. In this report we describe the design for an indirectly cooled superconducting solenoid to meet the requirements of the Fermilab CDF. The components of the magnet system are discussed in the following chapters, with a summary of parameters listed in Appendix A

No abstract available

[en] A large detector is being designed to study anti pp collisions at center-of-mass energies of up to 2000 GeV as part of the Fermilab Collider Detector Facility (CDF). The central detector of this facility consists of a solenoid, calorimeter yoke, and a variety of particle measurement devices. The yoke will be a large steel structure that will provide the magnetic flux return path as well as support structure for calorimetry and other instrumentation. It must resist both electromagnetic and gravitational loads while exhibiting only small elastic deformations. The instrumented endplugs of the yoke are subjected to large electromagnetic loads. Moreover, due to the presence of wire chambers within these plugs, they must also be particularly stiff. The purpose of this paper is to present the results of a finite element stress and deflection analysis of these structures under various anticipated load conditions. The PATRAN-G finite element modeling program, installed on a CDF-VAX 11/780 and operating from a Ramtek 6212 colorgraphics terminal, was used to generate the analysis models. The actual finite element analysis was performed by the ANSYS general purpose finite element program, installed on the Fermilab Cyber 175's

[en] Particle accelerators are an enabling technology not only utilized in their traditional role for fundamental research, but also in such diverse fields as medicine, industrial processes, and national security and defense. In recognition of this large impact on the US economy, the Fermi National Accelerator Laboratory (FNAL) has partnered with the Illinois Department of Commerce and Economic Opportunity (DCEO) and the Department of Energy’s Office of High Energy Physics (DOE/OHEP) to build the Illinois Accelerator Research Center (IARC). Located on the Fermilab campus, this facility will house office, technical, and educational space in a state-of-the-art facility for research and development of, education in and industrialization of particle accelerator technology. Key to the success of IARC will be DOE support of the idea that translational technology, namely developing ideas from the laboratory into commercial practice, only happens when the proper environment is cultivated. The proper environment promotes friendly, flexible collaboration with industry and universities and provides sufficient seed resources such that non-traditional and multi-disciplinary efforts can flourish. A key concept for the IARC program is that it serves as a portal to allow industrial access not just to the IARC physical plant but rather to the facilities and expertise of the entire laboratory. A successful program at IARC will lower barriers for Laboratory – Industry cooperation on accelerator technology and applications and enable an entire new class of projects to be undertaken as Government-Industry partnerships. In this paper Fermi National Accelerator Laboratory (Fermilab) is pleased to present a list of high impact application areas that provide opportunities for research and development of accelerator technologies to address national challenges in energy and the environment. Fermilab and its partners and collaborators are well positioned to undertake successful research and development programs on these technologies. The majority of the high-impact application areas described herein involve the use of electron-driven chemistry. An accelerator-generated electron beam can drive chemical reactions that would otherwise take place only at high temperatures and/or under the influence of catalysts. The resultant electron beam process may have a smaller carbon footprint due to its reduced energy consumption. Electron beams are also unique in that they can simultaneously drive both oxidation and reduction reactions in aqueous solutions, allowing the efficient destruction of harmful waterborne organic pollutants. The ability of ionizing radiation to crosslink materials altering their materials properties provides additional opportunities. Although we present a number of specific examples that represent high value opportunities to improve energy efficiency, reduce pollutants from energy production, clean up water, and reduce environmental toxins, it is likely that many additional potential applications will emerge as the technology is further developed. Other applications of accelerator technologies described in this document include accelerator-generated neutrons to produce energy and to treat nuclear waste and the use of superconducting magnet technology developed for accelerators to allow the construction of smaller, more compact and efficient generators for wind turbines. (author)

[en] Project X is a multi-megawatt proton facility being developed to support intensity frontier research in elementary particle physics, with possible applications to nuclear physics and nuclear energy research, at Fermilab. A Functional Requirements Specification has been developed in order to establish performance criteria for the Project X complex in support of these multiple missions. This paper will describe the Functional Requirements for the Project X facility and the rationale for these requirements.

[en] It has been frequently suggested that a long high field solenoid could be the basis for a high performance detector at a high luminosity machine. The properties of such a detector are explored for a 10 TeV collider using a 3 meter diameter superconducting solenoid with a 3 T field. It is concluded that very long high field solenoid is not a good candidate for a high energy, high luminosity detector, but that a somewhat shorter high field magnet with tracking chambers located outside the coil may give both good momentum resolution and easier pattern recognition than standard solenoids with tracking inside

[en] The Fermilab Collider Detector Facility (CDF) is a large detector system designed td study anti pp collisions at very high center of mass energies. The central detector for the CDF employs a large axial magnetic field volume instrumented with a central tracking chamber composed of multiple layers of cylindrical drift chambers and a pair of intermediate tracking chambers. The purpose of this system is to determine the trajectories, sign of electric charge, and momenta of charged particles produced with polar angles between 10 and 170 degrees. The magnetic field volume required for tracking is approximately 4 m long and 3 m in diameter. To provide the desired Δp_Tp_T less than or equal to 15% at 50 GeV/c using drift chambers with approx. 200μ resolution the field inside this volume should be 1.5 T. This field should be as uniform as is practical to simplify both track finding and the reconstruction of particle trajectories with the drift chambers. Such a field can be produced by a cylindrical current sheet solenoid with a uniform current density of 1.2 x 10⁶ A/m (1200 A/mm) surrounded by an iron return yoke. For practical coils and return yokes, both central electromagnetic and central hadronic calorimetry must be located outside the coil of the magnet. This geometry requires that the coil and cryostat be thin both in physical thickness and in radiation and absorption lengths. This dual requirement of high linear current density and minimal coil thickness can only be satisfied using superconducting technology. In this report we describe a design for a cryostable superconducting solenoid intended to meet the requirements of the Fermilab ies TDF

[en] We have measured the charged-particle multiplicities of events containing a large-transverse-momentum (p/sub perpendicular/) photon produced near center-of-mass polar angles (theta) of 90 degree, 17.5degree, and 8degree in proton-proton collisions. The data were obtained at the CERN Intersecting Storage Rings at center-of-mass energies of 23, 31, 45, 53, and 62 GeV and for the transverse-momentum range 0 < or = p/sub perpendicular/ < or = 4.5 GeV/c. When the photons are detected near theta = 90degree, the associated multiplicity in the hemisphere away from the observed photon is found to increase with increasing photon transverse momentum. In the hemisphere containing the photon, the associated multiplicity decreases at the lowest energy and is approximately constant at the highest energies. The data at theta = 17.5 degree and 8degree are similar, with the exception that the particle multiplicities near the detected photon are found to decrease with increasing photon p/sub perpendicular/ at all energies. No strong back-to-back structure is observed in the data; however, as the photon emission angle is changed, some shift of the multiplicity distributions in the direction opposite the photon is observed. The data at all three polar angles show a broad peak in the azimuthal angular distributions at phi = 180degree (opposite the detected photon). Finally, the data are compared to a simplified picture for particle production in high-p/sub perpendicular/ events, and to the various classes of high-p/sub perpendicular/ models that have been proposed

[en] Project X is a multi-megawatt proton facility being developed to support a world-leading program in Intensity Frontier physics at Fermilab. The facility is designed to support programs in elementary particle and nuclear physics, with possible applications to nuclear energy research. A Functional Requirements Specification has been developed in order to establish performance criteria for the Project X complex in support of these multiple missions, and to assure that the facility is designed with sufficient upgrade capability to provide U.S. leadership for many decades to come. This paper will briefly review the previously described Functional Requirements, and then discuss their recent evolution.