Si螞vio: A trigger for 螞-hyperons

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• 作者：Robert M&uuml ; nzer^a ; ; Martin Berger^a ; ; Laura Fabbietti^a ; ; R. Averbeck^b ; A. Andronic^b ; V. Barret^c ; Z. Basrak^d ; N. Bastid^c ; M.L. Benabderrahmane^e ; P. Buehler^f ; M. Cargnelli^f ; R. 膶aplar^d ; I. Carevic^g ; V. Charviakovaⁱ ; P. Crochet^c ; I. Deppner^e ; P. Dupieux^c ; M. D啪elalija^g ; Z. Fodor^h ; P. Gasik^a ; ⁱ ; I. Ga&scaron ; pari膰^d ; Y. Grishkin^j ; O.N. Hartmann^b ; N. Herrmann^e ; K.D. Hildenbrand^b ; B. Hong^k ; T.I. Kang^b ; ^k ; J. Kecskemeti^h ; Y.J. Kim^b ; M. Kirejczykⁱ ; M. Ki&scaron ; ^b ; ^d ; P. Kienle^a ; ^f ; ¹ ; P. Koczon^b ; R. Kotte^l ; A. Lebedev^j ; Y. Leifels^b ; J.L. Liu^e ; ^m ; X. Lopez^c ; V. Mankoⁿ ; J. Marton^f ; T. Matulewiczⁱ ; M. Petrovici^o ; K. Piaseckiⁱ ; F. Rami^p ; A. Reischl^e ; W. Reisdorf^b ; M.S. Ryu^k ; P. Schmidt^f ; A. Sch&uuml ; ttauf^b ; Z. Seres^h ; B. Sikoraⁱ ; K.S. Sim^k ; V. Simion^o ; K. Siwek-Wilczy艅skaⁱ ; V. Smolyankin^j ; K. Suzuki^f ; Z. Tyminskiⁱ ; P. Wagner^p ; E. Widmann^f ; K. Wi艣niewski^e ; ⁱ ; Z.G. Xiao^q ; T. Yamazaki^r ; ^s ; I. Yushmanovⁿ ; X.Y. Zhang^t ; A. Zhilin^j ; V. Zinyuk^e ; J. Zmeskal^f
• 关键词：Silicon ; Mesytec ; APV25 ; MIPS ; 螞 ; Trigger
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：1 May, 2014
• 年：2014
• 卷：745
• 期：Complete
• 页码：38-49
• 全文大小：2935 K

文摘

As online trigger for events containing hyperons in p+p collisions at 3.1 GeV a silicon-based device has been designed and built. This system has been integrated close to the target region within the FOPI spectrometer at GSI and was also employed as a tracking device to improve the vertex reconstruction of secondary decays. The design of the detector components, read-out, the trigger capability as well as the tracking performance are presented. An enrichment factor of about 14 was achieved for events containing a -hyperon candidate.