A new cylindrical drift chamber for the MEG II experiment
- Baldini, A. M.
- Baracchini, E.
- Berretta, L.
- Bianucci, S.
- Cavoto, G.
- CHIARELLO, GIANLUIGI
- CHIRI, CLAUDIO
- Cei, F.
- Corvaglia, A.
- Dussoni, S.
- Fahrni, D.
- Galli, L.
- Grancagnolo, F.
- Grassi, M.
- Hofer, A.
- Hildebrandt, M.
- Ignatov, F.
- Miccoli, A.
- Nicolò, D.
- Orsini, A.
- PANAREO, Marco
- PEPINO, AURORA
- PINTO, Carlo
- Piredda, G.
- Signorelli, G.
- Raffaelli, F.
- Recchia, L.
- Renga, F.
- Ripiccini, E.
- TASSIELLI, GIOVANNI FRANCESCO
- Tazzioli, A.
- Tenchini, F.
- Venturini, M.
- Voena, C.
- Zullo, A.
DOIAbstract
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 1.6×10−3 X0 per track turn allowing for a momentum resolution of ~120 keV/c
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