The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Proceedings of the Symposium Commemorating the 100th Anniversary of Hans Geiger's birth Held at the Hahn-Meitner-Institut für Kernforschung Berlin October 6 – 8, 1982
In this paper some of the progresses due to a better understanding of the emission and absorption of photons in gaseous detectors are discussed. The possibility of imaging photons from 4 to 10 eV offers many possible applications, discussed in this paper, for X-ray imaging, high-energy calorimetry, particle identification, etc. While ultraviolet photons have been known for a long time to play...
I have tried to illustrate the present status of gas-filled heavy-ion detectors. Despite their venerable age, gaseous detectors are in a still ongoing stage of development, continously modified and adapted to new experimental requirements. Heavy ion experiments require detection systems which are able to record simultaneously in only one detector several parameters, like time-of-arrival, position...
Multiwire proportional chambers (MWPCs) operated at very low gas pressures are shown to be an efficient timing and imaging tool for heavily ionizing particles. Their properties are described. Amplification in steps is shown to be feasible at low pressure, providing higher gains and gating possibilities. Both techniques can be extended to single electron detection at gains >107with possible applications...
Basic features of scintillation detectors based on the luminescence of noble gases and relevant gas mixtures are traced in the light of known radio luminescence processes The application of this detection regime to heavy ions is outlined and experimental results are reported.
I have presented a view on an instrument which takes advantage of the recent detector developments for very heavy ions. The features of these detectors were considered already in the design phase of the ion optical and geometrical layout of the spectrograph. The result is a modular setup with separated function magnets, with variable dispersion and a flexibility to adapt to the various requirements...
The performance of the Q3D-spectrometer at Vicksi is described with the emphasis on the design of the detector system. It consists of a focal plane detector, a parallel plate avalanche counter at the entrance of the spectrometer and a coincidence detector at the scattering chamber. The method of particle identification from the measured parameters is discussed in detail. A short review of the experimental...
SPEG is now under construction. It is expected to be completed before the end of 1984, and every body hopes that the first beam tests could take place during fall 1984.
4π data taken with the Plastic Ball show that cluster production in relativistic nuclear collisions depends on both the size of the participant volume and the finite size of the cluster. The measurement of the degree of thermalization and the search for collective flow will permit the study of the applicability of macroscopic concepts such as temperature and density.
With Diogène, we have a detector which can handle charged particle multiplicities up to at least 40. The maximum of counts which can be recorded per wire is 8, limiting theoretically the possible multiplicity to 80. The actual limit is certainly smaller due to double track resolution and the difficulty to reconstruct the pattern, which increases exponentially with the density of tracks. The drift...
Design and recent applications of the Munich RF-recoil spectrometer are described. This device allows the identification of heavy ion reaction products at O° within a large acceptance angle. Beam projectiles are suppressed by a crossed field radio-frequency velocity selector. Velocity, energy, and energy loss of the recoils of interest are determined by a high resolution time-of-flight measurement...
We have discussed some properties and limitations of the new techniques of phase-space cooling relevant in nuclear and heavy-ion physics. Many applications seem to be possible in the future. We have tried to indicate some of them. But in order to take full advantage of cooled beams, detectors and experimental techniques will have to be adapted. Phase-space cooling is already applied on a large scale...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.