Design and performance of the silicon sensors for the CMS barrel pixel detector
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- 作者：Y. Allkofer ; C. Amsler ; D. Bortoletto ; V. Chiochia ; L. Cremaldi ; S. Cucciarelli ; A. Dorokhov ; C. Hö ; rmann ; R. Horisberger ; D. Kim ; M. Konecki ; D. Kotlinski ; K. Prokofiev ; C. Regenfus ; T. Rohe ; D.A
- 关键词：Pixel ; Silicon ; Sensors ; CMS ; LHC ; Radiation hardness
- 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
- 出版年：2008
- 出版时间：1 January 2008
- 年：2008
- 卷：584
- 期：1
- 页码：25-41
- 全文大小：787 K
文摘
The CMS experiment at the (LHC) includes a hybrid silicon pixel detector for the reconstruction of charged tracks and of the interaction vertices. The barrel region consists of n-in-n sensors with cience?_ob=MathURL&_method=retrieve&_udi=B6TJM-4PG86XN-7&_mathId=mml35&_user=10&_cdi=5314&_rdoc=4&_acct=C000050221&_version=1&_userid=10&md5=bf09d057e89114baf8586aa750e3943a"">![]()
c=""http://www.sciencedirect.com/cache/MiamiImageURL/B6TJM-4PG86XN-7-8D/0?wchp=dGLbVzb-zSkzV"" alt=""Click to view the MathML source"" align=""absbottom"" border=""0"" height=18 width=98> cell size processed on diffusion oxygenated float zone silicon. A biasing grid is implemented and pixel isolation is achieved with the moderated p-spray technique. An extensive test program was carried out on the H2 beam line of the CERN-SPS. In this paper we describe the sensor layout, the beam test setup and the results obtained with both irradiated and non-irradiated prototype devices. Measurements of charge collection, hit detection efficiency, Lorentz angle and spatial resolution are presented.