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IHEP 97 - 4
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| Binon F.G., Blick A.M., Dolgopolov A.V. et al. | ||
| Beam studies of SAD-150 heavy crystal PWO calorimeter, small angle multiphoton detector of GAMS-4pi spectrometer | ||
| Protvino, 1997.- p.11, figs. 7, refs.:19. | ||
The SAD-150 heavy crystal PWO spectrometer, a full scale Small Angle multiphoton high resolution Detector of the GAMS-4$\pi$ setup, has been built, tuned, calibrated in muon and electron beams, incorporated in the GAMS-4$\pi$ and successfully tested under conditions of a real high-intensity experiment in 32.5 GeV/c pion beam of the IHEP proton synchrotron. The 90,000 $\pi^o$s and 10,000 $\eta$s have been recorded. The invariant mass and effective mass resolutions of the SAD-150 in the $\eta$ meson peak region have been measured to be 2% and 3%, in coincidence with values calculated for this calorimeter with geometry of the experiment taken into account. The SAD-150 showed practically no sensitivity to a high beam load in the GAMS-4$\pi$ central zone (as large as $10^6 \pi^-$/s through a PWO cell).
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