Proposal for a Long Distance Radar-to-Ordvac Data-Relay Link

Control Systems Laboratory changed its name to Coordinated Science LaboratoryContract DA-11-022-ORD-17

Proposal for a Provision for Inhibiting the Automatic Initiation of Tracks in Certain Areas

Control Systems Laboratory changed its name to Coordinated Science LaboratoryContract DA-36-039-SC-5669

An Apparatus for Providing Radar Data to a Remote Digital Computer

Control Systems Laboratory changed its name to Coordinated Science LaboratoryContract DA-11-022-ORD-72

Study of intermittency in h-h collisions at {Mathematical expression}=16.7 GeV

Charged-particle multiplicity distributions from hadron-hadron collisions at {Mathematical expression}=16.7 GeV are analyzed in rapidity, pseudorapidity and azimuthal angle intervals. The data-fully reconstructed events-were taken in the rapid-cycling Bubble Chamber of the International Hybrid Spectrometer Consortium exposed to a hadron beam (147 GeV/c momentum) of the Tevatron at Fermilab. The factorial moments of the multiplicity distributions increase with decreasing rapidity interval. The energy dependence of the slopes in h-h collisions is discussed. Suitable phase-space cuts show that most of the intermittency effect stems from low-transverse-momentum particles. In the two-dimensional analysis (rapidity azimuthal angle) we find a weak enhancement of the slope values, more in agreement with the observations by the NA22 experiment, rather than the observations in e+e- by the HRS collaboration

Study of intermittency in h h collisions at s**(1/2) = 16.7 GeV.

Charged-particle multiplicity distributions from hadron-hadron collisions at sqrt{s} =16.7 GeV are analyzed in rapidity, pseudorapidity and azimuthal angle intervals. The data—fully reconstructed events—were taken in the rapid-cycling Bubble Chamber of the International Hybrid Spectrometer Consortium exposed to a hadron beam (147 GeV/c momentum) of the Tevatron at Fermilab. The factorial moments of the multiplicity distributions increase with decreasing rapidity interval. The energy dependence of the slopes in h-h collisions is discussed. Suitable phase-space cuts show that most of the intermittency effect stems from low-transverse-momentum particles. In the two-dimensional analysis (rapidity azimuthal angle) we find a weak enhancement of the slope values, more in agreement with the observations by the NA22 experiment, rather than the observations in e+e− by the HRS collaboration

A fractal analysis of multiparticle production in hadron hadron collision ats**(1/2) = 16.7 GeV.

Some fractal aspects of multiparticle production in hadron-hadron interactions at sqrt{s} ~ = 16.7 GeV are investigated through an analysis of the moments Gq^nu and Gq^h suggested by Hwa. The validity of the interpretation of the data in this framework is investigated and discussed

Direct observations of galactic cosmic rays

The mysterious “radiation ... entering our atmosphere from above” discovered by Hess in 1912 is now known to be dominated by relativistic charged particles, mostly with energies in the GeV-range, but extending to energies higher by many orders of magnitude. As none of these particles can penetrate the earth’s atmosphere without interaction, detailed studies of their composition and energy spectra require observations with high-altitude balloons or spacecraft. This became possible only towards the middle of the 20th century. The direct measurements have now revealed much detail about the Galactic cosmic rays below 1015eV, but do not yet provide much overlap with the air-shower region of energies. A historic overview of the measurements is given, beginning with the realization that the majority of the cosmic rays are protons. The discovery and astrophysical significance of the heavier nuclei, and of the ultra-heavy nuclei beyond iron and up to the actinides, are then described, and measurements of the isotopic composition are discussed. Observations of the individual energy spectra are reviewed, and finally, the detection of electrons, positrons, and anti-protons in the cosmic rays, and the searches for exotic or unusual phenomena are summarized. Emphasis is given to the fact that all of these discoveries have become possible through the evolution of increasingly sophisticated detection techniques, a process that is continuing through the present time. The precise knowledge of the abundance distributions of the elements in the cosmic rays and of their isotopic composition permits a comparison with the “universal abundance scale” and provides strong constraints on the origin of the cosmic-ray material in the interstellar medium. “Clock-isotopes” reveal the time history of the particles. The shapes of the energy spectra of the individual cosmic-ray components are related to evolving ideas about particle acceleration and propagation in the Galaxy. In conclusion, prospects for future work are briefly discussed