所属 神奈川大学 工学部 情報システム創成学科
|標題||Status of the BELLE SVD detector|
|掲載誌名||Nucl. Instrum. Meth. A478 (2002)|
|概要||R. Abe, S. Okuno, et al. [Belle SVD Collaboration]
, The Belle spectrometer was designed for studies of B meson decays at an asymmetric e+e- collider operating at the capital υ (4S) resonance. One of its crucial components, a silicon vertex detector (SVD), is placed just outside a cylindrical beryllium beam-pipe. After a year of Belle operation an upgraded version of SVD was installed during the regular summer shut-down. The new SVD follows the same design, with a few important improvements. Rad-soft readout electronics was replaced by rad-tolerant one, allowing for longer lifetime of the detector. A new radiation and temperature monitoring system was developed and implemented. A saw-shaped inner surface was introduced in the beam-pipe to prevent potential synchrotron radiation damage. The upgraded detector started operating successfully in October 2000.