[en] We investigated the data obtained from a geophysical survey of the Greenstone Belt in the Barberton mountain land in the Transvaal, South Africa. A geological map is derived from the airborne magnetic and radiometric survey which differs significantly from the published geological map, particularly in the eastern are of the survey. There is no evidence contained within the geological data to suggest that the Greenstone Belt extends to a depth greater that 3 kilometers. The major geological constituents of the Barberton mountain land displays distinctive and diagnostic radiometric signatures, enabling accurate lithologic discrimination. 63 refs

[en] The talk shows how key INPO programs help foster improved nuclear power operations. The talk focuses on the results being seen from six key efforts: evaluations, training and accreditation, assistance, events analysis and information exchange, human performance and maintenance. The talk stresses that all INPO programs are geared toward enhanced performance and that progress in key performance areas since 1980 shows that INPO and U.S. industry efforts are achieving desired results

[en] In many areas, the word most often used to describe Japanese policy is open-quotes enigma.close quotes In some ways, Japan's record on environmental policy also has elements of mystery and contradiction. On the one hand, Japan's history and culture often are associated with a reverence for nature. Indeed, Japan does lead the world in certain environmental areas, such as reduction of conventional air pollutants and compensation of air pollution victims. On the other hand, Japan has been widely criticized for its poor record in preserving its domestic environment, contribution to tropical deforestation, and unwillingness to protect endangered species. Today, the international community clamors for Japan to take its share of responsibility, as an economic superpower, for the global environment. To secure its place in world affairs, Japan slowly has begun to respond to this pressure on issues ranging from ivory importation to reduction of CFC emissions. There is some hope that the government's particular willingness to address global warming may be a sign of significant changes to come in Japanese environmental policy. However, international pressure remains on the many environmental issues Japan has yet to resolve, including tropical deforestation and financing of Third World development projects that harm the environment. Japan's environmental policy is most effective when government and industry cooperate to find technical solutions to environmental problems. Although in recent years Japan's energy consumption has risen sharply, the Japanese have developed numerous technologies to reduce pollution and increase economic growth by improving energy efficiency. It is in these technologies that Japan has made the greatest strides and has the most to offer the global environment

[en] The current design of the beam position monitor (BPM) is based upon the approach of converting the amplitude modulation (AM) into phase angle modulation (PM). Consequently, the BPM is subject to the threshold effects which a PM system typically has. The threshold effects are caused by the signal-to-noise ratio (SNR) of the concerned system. For a BPM, its SNR is related to the operating intensity of the proton beam. The SNR degrades as the beam intensity lowers. Therefore, it is predictable that the threshold effects would take place when the beam intensity is lower than a certain level. An analysis was made to examine this situation. The result suggests that the BPM has a certain estimation bias. This bias is dependent on both the beam position and SNR. When this beam intensity is lower than a certain threshold, the estimation bias starts to increase dramatically, resulting in the BPM failure

[en] A fast beam damper system is currently being built for the Tevatron. The system is similar to the Super Damper system in the main ring with increased bandwidth and a pulsed high power mode for injection errors. The purpose of this writeup is to describe the basics of the system, and some of the reasoning behind its design. Calculations of expected performance are also included

[en] The main purpose of this note is to give an illustrate example of the use of quadrupole monitoring system including the modeling page W120. On 9/29/95 the Q4 quadrupole on the C side of D0 (C4Q4) was bumped and its position changed. This motion was noticed on the inclinometer, C:C4Q4P, and also found on the corresponding water level, T:C49Q4L. The changes are shown in figure 1. Both the water level and the inclinometer are located roughly in the center of the quadrupole and they can check the assumption that there had been a rigid rotation about the upstream end by comparing the inclinometer angular change (∼ 300 (micro)R) with the angle (∼200 (micro)R) calculated using the change in the water level (.3mm) over the half length of the magnet (3.3m/2). The sign is consistent and the agreement in magnitude is the most consistent that they have observed since usually the magnet does not act as a rigid body. A difference orbit in the vertical plane with separators off and at low beta is shown in figure 2 with file 6 being before the shut down and file 189 at start up before much tuning. Figure 3 shows the result of a simulation using page W120 with a -.3mm offset in C4Q4. Figures 2 and 3 have the same phase and the maximum amplitude is approximately the same. No effort was made to check that all settings were exactly the same for file 6 and file 189 and in fact clearly there are some differences other than the quad motion. The orbit was smoothed with vertical dipoles at C49 and D11, and figure 4 shows the result of a W120 simulation using the change in dipole setting and the -.3mm offset as measured by the water level. There is clearly an order of magnitude reduction in amplitude of the quadrupole motion induced oscillation shown in figure 3. As a caveat, the water level system is fairly sensitive to outside influences. Figure 5 shows an expanded time scale which shows the recalibration of the water level system (all four systems lost their absolute calibration during the shutdown due to people moving the water lines) and then further modulations after the supposed true reading that they have mentioned above. In conclusion, the quadrupole monitoring systems can be used as a warning signal for possible changes. They have chosen for our example a case in which there was consistency between the water level system, the inclinometer system, and the observed beam motion

[en] The events surrounding the Chernobyl nuclear reactor accident in the USSR are examined. The reaction of the nuclear industry in the United States and European countries is discussed together with an analysis of the media reporting of the accident. The authors conclude that in the longer run, Chernobyl is certain to reactivate the largely dormant anti-nuclear movement in Europe as it calls for plant closures, tougher safety precautions and less secrecy about problems the industry faces

[en] Critical environmental zones are those ecosystems that are so degraded that the health or well-being of human inhabitants is threatened. A conceptual framework is presented for considering criticality and a rationale for a Canadian research project on critical zones. A model of pathways to criticality is outlined and some examples of environmental degradation in Canada are presented, including acid rain and greenhouse gas emissions. Societal response to, and public perception of, critical environmental zones is described. Media, format, and target audiences for output from a Canadian project are considered and some central scientific and policy questions are identified under such categories as environmental stresses, buffering capacity, indicators, human driving forces, and societal responses. An inventory of pertinent international and national activities is included. 53 refs., 8 figs., 3 tabs

[en] As part of the DART Project the authors have developed a package of software for CAMAC access from UNIX and VxWorks platforms, with support for several hardware interfaces. They report on developments for the CES CBD8210 VME to parallel CAMAC, the Hytec VSD2992 VME to serial CAMAC and Jorway 411S SCSI to parallel and serial CAMAC branch drivers, and give a summary of the timings obtained

[en] Critical environmental zones are those ecosystems that are so degraded that the health or well-being of human inhabitants is threatened. A conceptual framework is presented for considering criticality and a rationale for a Canadian research project on critical zones. A model of pathways to criticality is outlined and some examples of environmental degradation in Canada are presented, including acid rain and greenhouse gas emissions. Societal response to, and public perception of, critical environmental zones is described. Media, format, and target audiences for output from a Canadian project are considered and some central scientific and policy questions are identified under such categories as environmental stresses, buffering capacity, indicators, human driving forces, and societal responses. An inventory of pertinent international and national activities is included. 53 refs., 8 figs., 3 tabs