MAGNETIC LENS SYSTEM OF UNIT MAGNIFICATION FOR HIGH ENERGY CHARGED PARTICLES
A magnetic lens system designed from studies made with computing machines has been built and used at the Brookhaven cosmotron. It collected pions of 1020 Mev/c mean momentum produced at a target in the external proton beam, selected a narrow momentum bandwidth from a continuous momentum spectrum, recombined the selected momenta, and refocused the pions to an image of unit magnification. The effective solid angle of acceptance was 5.04 x 10/sup -3/ sr and the momentum band pass width was plus or minus 30 Mev/c. The measured particle yield on 1 in./sup 2/ at the focus was 5 x 10/sup 5/ for 6 x 10/sup 10/ internal 3 Bev/c protons; 27% were positive pions and 73% were protons. (auth)
- Research Organization:
- Brookhaven National Lab., Upton, N.Y.
- NSA Number:
- NSA-17-004159
- OSTI ID:
- 4760278
- Report Number(s):
- BNL-6064
- Journal Information:
- Rev. Sci. Instr., Vol. Vol: 33; Other Information: BNL-6064. Orig. Receipt Date: 31-DEC-63
- Country of Publication:
- United States
- Language:
- English
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