A new cylindrical drift chamber for the MEG II experiment
- Autori: Baldini A.M.; Baracchini E.; Berretta L.; Bianucci S.; Cavoto G.; Chiarello G.; Chiri C.; Cei F.; Corvaglia A.; Dussoni S.; Fahrni D.; Galli L.; Grancagnolo F.; Grassi M.; Hofer A.; Hildebrandt M.; Ignatov F.; Miccoli A.; Nicolo D.; Orsini A.; Panareo M.; Pepino A.; Pinto C.; Piredda G.; Signorelli G.; Raffaelli F.; Recchia L.; Renga F.; Ripiccini E.; Tassielli G.; Tazzioli A.; Tenchini F.; Venturini M.; Voena C.; Zullo A.
- Anno di pubblicazione: 2016
- Tipologia: Contributo in atti di convegno pubblicato in rivista
- OA Link: http://hdl.handle.net/10447/619059
Abstract
A new cylindrical drift chamber is currently under construction for the MEG II experiment. The chamber is meant to track low momentum positrons from μ+ decays to search for μ+→e+γ events. The detector is segmented in very small drift cells, placed in stereo configuration and operated in a helium-isobutane gas mixture. The use of thin aluminium wires and light gas mixture set the total radiation length of the chamber to only 1.6×10-3X0 per track turn allowing for a momentum resolution of ∼120 keV/c.