Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2003-10-22
NATO Sci.Ser.II 111 (2003) 141
Physics
High Energy Physics
High Energy Physics - Experiment
8 pages, 4 figures, Presented at NATO Advanced Research Workshop on Spin Structure of the Nucleon, June 29-July 4, 2002, Nor-A
Scientific paper
We describe a study of high-energy Compton beam polarimeters for the future e+e- linear collider machine TESLA. A segment of the beam delivery system has been identified, which is aligned with the e+e- collision axis and which has a suitable configuration for high-quality beam polarization measurements. The laser envisaged for the polarimeter is similar to an existing facility at DESY. It delivers very short pulses in the 10 ps, 10-100uJ regime and operates with a pattern that matches the pulse and bunch structure of TESLA. This will permit very fast and accurate measurements and an expeditious tune-up of the spin manipulators at the low-energy end of the linac. Electron detection in the multi-event regime will be the principle operating mode of the polarimeter. Other possible operating modes include photon detection and single-event detection for calibration purposes. We expect an overall precision of dP/P=0.5% for the measurement of the beam polarization.
Gharibyan Vahagn
Meyners N.
Schüler K.-P.
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