The silicon vertex detector (SVD) for the Belle II experiment at the SuperKEKB accelerator in Japan is responsible for detecting particle’s origins. It comprises four cylindrical layers with ladder-like double-sided silicon detector (DSSD) arrays on each layer. The ladders produced under a stringent quality control showed good mechanical tolerance with a DSSD distortion <300 µm and with an electrical efficiency >99%. The SVD was commissioned with cosmic-ray events for two months. Cluster-finding efficiency was estimated in the commissioning to be >98.5%. The commissioned SVD had been installed on the Belle II detector. The so-called "phase 3" of the experiment with the SVD will start in March 2019. © Copyright owned by the author(s) under the terms of the Creative Commons.
The Silicon Vertex Detector of the Belle II Experiment
Batignani, Giovanni;Bertacchi, V.;Bettarini, S.;Bosi, F.;Casarosa, G.;Forti, F.;Lueck, T.;Martini, A.;Paladino, A.;Paoloni, E.;Rizzo, G.;Zani, L.;
2019-01-01
Abstract
The silicon vertex detector (SVD) for the Belle II experiment at the SuperKEKB accelerator in Japan is responsible for detecting particle’s origins. It comprises four cylindrical layers with ladder-like double-sided silicon detector (DSSD) arrays on each layer. The ladders produced under a stringent quality control showed good mechanical tolerance with a DSSD distortion <300 µm and with an electrical efficiency >99%. The SVD was commissioned with cosmic-ray events for two months. Cluster-finding efficiency was estimated in the commissioning to be >98.5%. The commissioned SVD had been installed on the Belle II detector. The so-called "phase 3" of the experiment with the SVD will start in March 2019. © Copyright owned by the author(s) under the terms of the Creative Commons.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
