NA8

NA8 was an experiment at the Super Proton Synchrotron of CERN , which was conducted from 1977 to 1987. The aim was to research the elastic scattering of hadrons at small angles. The collaboration's spokesman was Per Grafström from Uppsala University .

construction

The NA8 instrumentation was about 85 meters long. In front of these devices, over a length of 600 meters, the composition of the incoming jet was precisely determined. Depending on the configuration, the beam mainly contained pions , muons and electrons or protons . Two differential Cherenkov counters filled with helium and two threshold counters were used for identification . In the main structure, the first larger component was a sample between two vacuum tubes, each about 20 meters long . Before and after the sample there was also a multi-wire proportional chamber and a scintillator . In the sample, hydrogen was under a pressure of 10 atm . In addition, six identical cells, consisting of an anode and a cathode plate paired with a wire mesh, allowed the measurement of particles scattered in the sample. Beam particles at small angles were measured in a spectrometer attached to the second vacuum tube. That consisted of four magnets and six multi-wire proportional chamber blocks.

Web links

Some datasets of the NA8 experiment can be found in the Durham HepData Project : Datasets for NA8

Individual evidence

↑ NA8 - Hadron Elastic Scattering at Small Angles. CERN, accessed December 5, 2012 .
↑ JP Burq et al .: Soft π ^- p and pp elastic scattering in the energy range 30 to 345 GeV . In: Nucl. Phys. B . 217, No. 2, 1983, p. 285. doi : 10.1016 / 0550-3213 (83) 90149-9 .

[greybook-1] NA8 - Hadron Elastic Scattering at Small Angles. CERN, accessed December 5, 2012 .

[NPB-2] JP Burq et al .: Soft π ^- p and pp elastic scattering in the energy range 30 to 345 GeV . In: Nucl. Phys. B . 217, No. 2, 1983, p. 285. doi : 10.1016 / 0550-3213 (83) 90149-9 .