Proposal to study pi- p --> pi0n and pi- p --> eta n at high energy Page: 7 of 37
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II. EXPERIMENTAL DETAILS
This experiment is designed to measure the 70 and r cross sections in
the range between 20 and 200 GeV. The rough shape of the differential cross
sections are shown below.
We have designed the equipment and selected the running time to give 10 counts
for no production in the region of t less than 0.1 GeV2 at each energy. This
means that in the region of the second maximum the counting rate will be about
10 counts for a At of 0.1. The resolution in t has been selected so that our
minimum detectable t will be of the order of .002 and the accuracy on t in the
whole range is better than .04. The experimental arrangement to accomplish this
is fairly modest and is shown schematically in Figure 1. The 7w enter the target,
which is surrounded by a veto house to eliminate multi-pion reactions, and the
w0 is detected in the shower counter downstream. This technique has worked well
at the lower energies at which this reaction has been measured and it will
continue to work at these higher energies.
In order to measure the value of t, one needs to know the incoming w
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Tollestrup, A.V.; Walker, R.L. & /Caltech. Proposal to study pi- p --> pi0n and pi- p --> eta n at high energy, report, June 1, 1970; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc887653/m1/7/: accessed January 19, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.