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Baumgarten, C.; Braun, B.; Court, G.; Ciullo, G.; Ferretti, P.; Golendukhin, A.; Graw, G.; Haeberli, W.; Henoch, M.; Hertenberger, R.; Koch, N.; Kolster, H.; Lenisa, P.; Nass, A.; Pod'yachev, S.P.; Reggiani, D.; Rith, K.; Simani, M.C.; Steffens, E.; Stewart, J.; Wise, T.
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 04/2002, Letnik: 482, Številka: 3Journal Article
An atomic beam polarimeter for measurement of the hyperfine population numbers and the absolute polarization of thermal atomic hydrogen (H) and deuterium (D) beams is described. The principle of measurement and the method of calibration are given. The polarimeter measures the 4 (6) relative hyperfine population numbers of a thermal H (D) beam in the region of 10 13 atoms s −1 to an absolute error of less than 0.01. The polarimeter has been in continuous operation with the internal polarized hydrogen and deuterium gas target used in the HERMES experiment at DESY since 1996.
