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SHIELD SMALL SOURCE EXPERIMENTS. Summary Report

Description: A shielding experiment was performed that provided a proof test of the shield calculation methods used in the MCR shield desing and provides a partial confirmation of cross-section data. Measurements were made with a gamma spectrometer behind a configuration consisting of a layer of gamma shielding material followed by a neutron shield, with the configuration exposed to neutrons from a Po --Be source. The test configuration is illustrated. Secondary gamma rays produced in the assembly were measured with the spectrometer and compared directly with calculations. Calculations were performed with the ADONIS three- dimensional rectangular geometry Monte Carlo code, which is derived from the one- dimensional Monte Carlo codes used in the basic MCR shield analysis. Experiments were performed with samples of iron, lead, and stainless steel, and calculations were completed for the no-sample configuration and for an iron sample. Experimental and calculated detector response for these two cases are compared. Agreement is within a factor of two at all energies, and the calculated energy deposited in the crystal is within 25% of that observed for the no-sample case and within l5% for the iron case. This agreement demonstrates the validity of the experiment and of the basic calculation techniques used, and gives support to the secondary gamma production cross sections used for iron. (auth)
Date: November 1, 1963
Creator: Schamberger, R.; Celnik, J. & Ross, R.
Partner: UNT Libraries Government Documents Department

Inelastic p p Scattering at 200-GeV/c

Description: The authors have measured the doubly differential cross section sd{sup 2}{sigma}/dtdM{sup 2} for the reaction p + p {yields} p + X using 200 GeV incident protons in the external beam at the National Accelerator Laboratory. Here t is the square of the four momentum transfer to the target proton, M{sup 2} is the mass squared of X, and s is the total center of mass energy squared. They cover the region of 0.019 < |t| < 0.19 GeV{sup 2} and 1 < M{sup 2} < 60 GeV{sup 2}. Interesting structure is observed at low |t| and M{sup 2} values.
Date: January 1, 1973
Creator: Childress, S.; Franzini, P.; U., /Columbia; Lee-Franzini, Juliet; McCarthy, R.; Schamberger, R., Jr. et al.
Partner: UNT Libraries Government Documents Department