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Optimizing Detector Alignment and Beam Stability in FPD Measurements

This guide outlines essential checks for detector alignment in FPD systems to minimize bias caused by halo asymmetries. A special run of 30 minutes is recommended weekly at the end of storage to assess beam stability and coordinate correlations among different detectors. It further emphasizes the importance of studying beam width and determining the minimum t-value reached. Key potential adjustable parameters (AOTs) for optimizing measurements are also detailed for effective analysis.

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Optimizing Detector Alignment and Beam Stability in FPD Measurements

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  1. FPD ALIGNMENT • INTIME RATESshould be checked for detector alignment. This will avoid bias by halo asymmetries, this is the case of the horizontal pots. • Need of 30 min special runs at end of store, one per week? • - To check beam stability • - coordinate correlations for elastics among different detectors. • - Study beam width • - Determine minimum t value reached • possible AOT´s: • (A1U+A2u)*(P1D+P2D)*noVC*noLUM; (A1D+A2D)*(P1U+P2u)*noVC*noLUM • (A1I+A2I)*(P1O+P2O)*noVC*noLUM; (A1O+A2O)*(P1I+P2I)*noVC*noLUM

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