1. CBM RICH working group GSI, Germany Bergische Universität Wuppertal (BUW), Germany Hochschule Esslingen (HSE), Germany PNPI Gatchina, St. Petersburg, Russia Pusan Natl. University (PNU), Korea (IHEP Protvino, Russia)

2. 14th CBM collaboration meeting, Split, October 2009 RICH working group RICH Workgroup Tuesday, October 6, 2009 PresentationSpeaker 11:00 – 11:30Coffee 11:30 – 11:45Introduction of Wuppertal group and R&D PlansK.-H. Kampert/ J. Rautenberg (Univ. Wuppertal) 11:45 – 12:00Status report on Mini RICHI.K. Yoo (Natl. Univ. Pusan) (EVO) 12:00 – 12:15Status report on mechanical designE.Vznuzdaev (PNPI) 12:15 – 12:30Results with n-XYTER readout of MAPMT in Lab and TestbeamJ. Eschke (GSI) 12:30 – 12:45WLS studies (+ brief information on status of mirrors)C. Höhne (GSI)/ M. Dürr (HSE) 12:45 – 13:00Discussion on RICH R&D (probably to be extended during lunch (and dinner(s))): - status and next steps - coordination of activities - path towards IMoU and TDR - preparation of Technical Board meeting on Thursday, October 8 13:00Lunch

3. 14th CBM collaboration meeting, Split, October 2009 Timelines/ Milestones (→ IMoU) prototypes of subsystems (photodetector, mirror + support) – Spring/Summer 2010 complete RICH prototype and tests in testbeam - Spring/Summer 2011 RICH design simulations of limiting factors - end of 2010 RICH engineering design - Autumn 2011 TDR - End of 2011 be able to apply for funding for detector building in 2012 finish detector building until 2016 (?)

4. 14th CBM collaboration meeting, Split, October 2009 Plans Preparation of complete RICH prototype to be tested in electron/pion beam at GSI, CERN or elsewhere (Europe): PMT plane of 3x3 or 4x4 H8500 with n-XYTER readout (electronics to be improved for an upgraded prototype) (Wuppertal, GSI) mirror prototyopes from Compas (HS Esslingen) mirror mount (PNPI Gatchina) gas vessel, gas system (PNPI Gatchina) design (GSI, PNPI Gatchina, Wuppertal) RICH prototype at Pusan, Korea test specifications for gas system (gas purity and controls, stability and control for temperature, pressure,…)

5. 14th CBM collaboration meeting, Split, October 2009 Plans (II) → enables us for a preparation of a TDR till the end of 2011 → test mechanical integration, working conditions of complete system, evaluate simulations,…… Further investigations in the lab: characterization of possible PMT options (q.e., collection efficiency, uniformity, wls films, sensitivity to magnetic field (shielding?),…) optimize readout electronics, specify requests for RICH suitable CBM-xyter chip mirrors (thickness, mirror mount,…), adjustment and alignment system controls → please read carefully IMoU draft and send your comments! → set up detailed list of tests/ measurements needed for final design/ decision on options/ design….