Abstract
The reaction p + CH2→ forward charge particle + X is used for this aim traditionally. Analyzing power of this reaction falls off as 1/p, where p is the laboratory momentum. At the proton momenta of order 8 GeV/c, which are expected at the JLab experiment, the low analyzing power creates problems for off-line analysis of data. On the other hand, it is well known that the reaction p+p → p+p has the much more analyzing power. So, the calorimeter is predestinated for suppression of inelastic events in this reaction. In the report it is shown that the problem is solved quite well.
Highlights
The analyzing power of the reaction(AP)p + CH2 → f orward charge particle + X (1)was measured at the Dubna synchrophsotron in range of 1.75 – 5.3 GeV/c [1]
The expected AP at plab = 7.5 GeV/c, where it is planned to measure secondary proton scattering at the Jlab experiment [3], is too small to provide necessary accuracy for a reasonable run time
The track parameters were measured by drift chambers
Summary
The analyzing power of the reaction(AP)p + CH2 → f orward charge particle + X (1)was measured at the Dubna synchrophsotron in range of 1.75 – 5.3 GeV/c [1]. Was measured at the Dubna synchrophsotron in range of 1.75 – 5.3 GeV/c [1]. The 1/plab dependence of AP was found in this work. It turned out that analyzing power of the elastic pp scattering [2], shown in this Fig., follows to the same low.
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