Precision Electron-Beam Polarimetry at 1 GeV Using Diamond Microstrip Detectors

We report on the highest precision yet achieved in the measurement of the polarization of a low-energy, O(1GeV) , continuous-wave (CW) electron beam, accomplished using a new polarimeter based on electron-photon scattering, in Hall C at Jefferson Lab. A number of technical innovations were necessary...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Physical review. X 2016-02, Vol.6 (1), p.011013, Article 011013
Hauptverfasser:	Narayan, A., Jones, D., Cornejo, J. C., Dalton, M. M., Deconinck, W., Dutta, D., Gaskell, D., Martin, J. W., Paschke, K. D., Tvaskis, V., Asaturyan, A., Benesch, J., Cates, G., Cavness, B. S., Dillon-Townes, L. A., Hays, G., Ihloff, E., Jones, R., King, P. M., Kowalski, S., Kurchaninov, L., Lee, L., McCreary, A., McDonald, M., Micherdzinska, A., Mkrtchyan, A., Mkrtchyan, H., Nelyubin, V., Page, S., Ramsay, W. D., Solvignon, P., Storey, D., Tobias, A., Urban, E., Vidal, C., Waidyawansa, B., Wang, P., Zhamkotchyan, S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Backscattering Continuous radiation Data analysis Detectors Diamonds Elastic scattering Electron beams Electron spin Experiments Innovations INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY Laser beams Lasers Model testing Particle physics Particle tracking Photon beams Photon scatter Photons Polarimeters Polarization Radiation Radiation dosage Sensors Standard model (particle physics) Uncertainty
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	We report on the highest precision yet achieved in the measurement of the polarization of a low-energy, O(1GeV) , continuous-wave (CW) electron beam, accomplished using a new polarimeter based on electron-photon scattering, in Hall C at Jefferson Lab. A number of technical innovations were necessary, including a novel method for precise control of the laser polarization in a cavity and a novel diamond microstrip detector that was able to capture most of the spectrum of scattered electrons. The data analysis technique exploited track finding, the high granularity of the detector, and its large acceptance. The polarization of the 180−μA , 1.16-GeV electron beam was measured with a statistical precision of
ISSN:	2160-3308 2160-3308
DOI:	10.1103/PhysRevX.6.011013