[en] A systematic study, as a function of beam energy and charged particle multiplicity, of the rate of neutral pion production in ¹²C reactions on ²⁰⁸Pb is presented for energies from .4 to 2.1 GeV per nucleon. Data are compared with similar data from ⁴⁰Ar + ²⁰⁸Pb experiments. A description of the experimental apparatus is given and measurement of π^+- production and charged particle multiplicity is discussed. 26 references

[en] The design and performance of gas Cherenkov counters to be used as triggers in the TASS spectrometers are briefly discussed. The system is designed for the detection of single electrons in proton-nucleus collisions

[en] On January 8, 1995, over 180 participants gathered to hear the QM95 preconference workshop on 'Physics with the Collider Detectors at RHIC and the LHC'. The goal was to bring together the experimentalists from a wide community of hadron and heavy ion collider detector collaborations. The speakers were encouraged to present the current status of their detectors, with all the blemishes, and the audience was encouraged to share their successes and failures in approaching similar detector design issues. The presentations were excellent and the discussions were lively and stimulating. The editors hope that the reader will find these proceedings to be equally stimulating. Separate abstracts have been submitted to the energy database from articles in this report

[en] The Relativistic Heavy Ion Collider (RHIC) was commissioned for heavy ion collisions and for polarized pp collisions in 2001. All principal components of the accelerator chain were operational by the 2003 RHIC run. Approximately 50 papers on RHIC experimental results have been published in refereed journals to date. This is a testament to the vast amount of exciting new information and the unprecedented analysis and publication rate from RHIC. A number of signals of creation of matter at extreme energy density, and of new physics in that matter, have been observed. The RHIC community has been heavily engaged in discussion about these signals, and about the appropriate level of proof for Quark Gluon Plasma discovery at the RHIC. In fact, such discussions were the subject of an earlier RBRC Workshop. One of the striking results from heavy ion collisions at RHIC is that the quark gluon plasma accessible appears to be strongly coupled. The properties of strongly coupled plasmas are of intense interest in the traditional Plasma Physics community, who have been developing tools to study such matter theoretically and experimentally. Despite the fact that one plasma interacts electromagnetically and the other through the strong interaction, there is tremendous commonality in the intellectual approach and even the theoretical and experimental tools. It is important to broaden the discussion of Quark Gluon Plasma discovery beyond possible signals of deconfinement to also encompass signals of plasma phenomena in heavy ion collisions. Thus it is imperative establish more direct contact among Nuclear, Plasma and Atomic physicists to share techniques and ideas. RHIC physicists will benefit from familiarity with typical plasma diagnostics and theoretical methods to study strongly coupled plasmas. Plasma and Atomic physicists may fmd new techniques parallel to the multi-particle correlations used in RHIC data analysis, and theoretical tools to study high energy density matter where the coupling constant is not small. The goal of this Workshop was to bring together experts at the forefront of theoretical and experimental work on strongly coupled systems in the three communities. From the variety and depth of the presentations at the workshop, we believe that we successfully fostered the exchange of information and ideas. Furthermore, many overlaps and possible exchanges of techniques were identified. Extremely interesting discussions took place, identifying possible avenues for further exchanges and interdisciplinary collaborations

[en] The second phase of an experiment studying matter at very high excitation following central collisions between ¹²C and ²⁰⁸Pb at 1.05 to 2.1 GeV/n was completed with a run at the Berkeley Bevatron in February, 1979. This phase was designed to obtain the production cross sections for π⁰ mesons as a function of energy. Such an energy scan could, in principle, indicate extraordinary changes in production cross sections and signal the creation of a different state of nuclear matter. A description of the improved system together with a preliminary version of the new results is given. Rates of γ and charge production are plotted as a function of beam energy. 10 figures

No abstract available

[en] The measurement of n-γ correlation following π^--capture in ¹⁶⁵Ho and ¹⁸¹Ta was completed at TRIUMF. The exclusive neutron spectra show significant correlation to the final nuclear states and neutron multiplicities. For the lowest neutron multiplicity an almost kinematically complete analysis is possible which revealed the important role played by radiative π-capture. Detailed structures show coherent trends among various nuclear final states in the exclusive neutron pectra, which promise to yield information about the fast neutron emission process. Further progress in data analysis, including angular distribution and triple coincidence, should help to elucidate the mechanism of high spin nuclear states

[en] The Relativistic Heavy Ion Collider (RHIC) came online in 2000, and the last three years have provided a wealth of new experimental data and theoretical work in this new energy frontier for nuclear physics. The transition from quarks and gluons bound into hadrons to a deconfined quark-gluon plasma is expected to occur at these energies, and the effort to understand the time evolution of these complex systems has been significantly advanced. The heavy ion parallel session talks from the Conference on the Intersections of Particle and Nuclear Physics (CIPANP) 2003 are posted at: 'http://www.phenix.bnl.gov/WWW/publish/nagle/CIPANP/'. We provide a brief summary of these sessions here

[en] The experimental setup, instrumentation, and results of Experiment 486H at Bevalac to test the feasibility of studying two photon inclusive and inclusive lepton pair production in the presence of a high multiplicity of background secondaries are described. Some preliminary observations are discussed

[en] Central collisions of ¹²C and Pb nuclei have been examined at six beam energies from 1-2 GeV/n for possible threshold phenomena, using neutral and charged π meson production as a probe. The results indicate that although pion production increases by approximately a factor of two in this energy range, the increase is a smooth function of beam energy showing no such effects within statistical errors of approx. 5% for the most central collisions. (orig.)