NUCLEAR STRUCTURE MEASUREMENTS WITH THE BROOKHAVEN COSMOTRON Page: 1 of 15
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NUCLEAR STRUCTURE MEASUREMENTS WITH THE BROOKHAVEN COSMOTRON
J. L. Friedes, H. Palevsky, R. J. Sutter, and G. W. Bennett
Brookhaven National Laboratory CFSTI PRICES
R. L. Stearns H.C. $ / ; MN ."$ -
Vassar College RFitEASED 0OR AN1CUNCELENT
D. M. Corley and N. S. Wall IN NUICI1AR SCIENCE ABSTRACTS
University of Maryland
G. C. Phillips and W. D. Simpson
About a year ago the Brookhaven group undertook a study of the
Brookhaven Cosmotron to determine whether the energy resolution and energy
stability of the machine were adequate for nuclear structure measurements.
Figure 1 shows some of the characteristics of the Cosmotron and the results
of the preliminary measurements. The internal beam intensity is around
5 x 1011 protons per pulse. We can extract 20 to 30% of that giving about
10 external protons per pulse. The time average current with a 2.5 sec
rep. rate is 8 nA and the beam spill length is 100 to 200 milliseconds. The
energy range can be varied from 500 MeV to 3 BeV. In our preliminary
experiments a year ago we determined the beam energy spread to be less than
3 MeV and the long-term beam stability to be better than 1.5 MeV. This
latter measurement extended over an 18 hour period and included shutting
the RF off, the magnetic field off, and starting up again. With these
encouraging results we decided to build a large spectrometer system which
Work supported by the U.S. Atomic Energy Commission.
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Friedes, J.L.; Palevsky, H.; Sutter, R.J.; Bennett, G.W.; Stearns, R.L.; Corley, D.M. et al. NUCLEAR STRUCTURE MEASUREMENTS WITH THE BROOKHAVEN COSMOTRON, report, February 1, 1966; Upton, New York. (https://digital.library.unt.edu/ark:/67531/metadc1025273/m1/1/: accessed April 24, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.