Subject: LHC IR Upgrade Collaboration Meeting: CERN 11-12 March 2002 Date: Fri, 08 Feb 2002 21:55:56 +0100 From: Francesco Ruggiero To: Bill Turner , Francesco Ruggiero , Jim Strait , Miguel Furman , Mike Syphers , Norbert Siegel , Oliver Bruning , Peter Schmuser , Philippe Lebrun , Ranko Ostojic , Siegfried Wolff , Steve Peggs , Tanaji Sen , Tom Taylor , Lucio Rossi , Ramesh , Mike Lamm , Peter Limon , Nikolai Mokhov , Alexander Zlobin , Steve Gourlay , Kiyosumi Tsuchiya , Herman ten Kate , Fulvia Pilat , Giovanni Volpini , Andries den Ouden , Pasquale Fabbricatore , Arnaud Devred , Daniel Leroy , Glyn Kirby , Luca Bottura , Andrzej Siemko Dear colleagues, we would like to invite you to attend a Collaboration Meeting on "LHC IR Upgrade", that will take place at CERN on Monday 11 and Tuesday 12 March 2002 with the following goals: - For the participants to inform each other about their ideas and plans for upgrades to the LHC interaction regions for higher luminosity, and their plans for the R&D required to implement possible second generation IRs. - To provide guidance to the collaborators on which upgrade paths seem the most promising; to identify the R&D topics that need to be addressed in order better to evaluate the different approaches; and to start to develop priorities for addressing open questions. - To agree on a rough timetable for further development of the different IR upgrade ideas and the associated R&D, and on how and when we will evaluate the different proposed schemes. - To serve as a forum on the technology of high field magnets, which will ultimately set the limits for IR upgrade performance. We hope you can attend this meeting and contribute to a successful start up of the collaboration, in spite of the rather short notice. Please confirm by email your participation before the end of February and discuss possible presentations directly with the co-ordinators of the sessions outlined below. If you need assistance for hotel reservation, visa, etc., please contact the SL/AP secretary Juliette Thomashausen (Juliette.Thomashausen@cern.ch). With the help of Ranko Ostojic, Steve Peggs, Lucio Rossi, Jim Strait, and Tom Taylor, further information on the organization of the meeting and the final agenda of the sessions will be sent to all the participants in the first week of March. Best regards Francesco Ruggiero Tentative outline of the sessions --------------------------------- We foresee three sessions, each lasting 3h30 and including a coffee break and ~1/2 hour discussion at the end. Each session can tentatively accommodate 5 talks of 1/2 hour (including discussion). At this stage the boundary between sessions can be somewhat flexible, depending on the number and type of contributions. Steve Peggs, Jim Strait, and Lucio Rossi have agreed to co-ordinate the contributions and the discussion in each session, and will present summary talks in the afternoon of Tuesday 12 March. A restricted "executive session" is scheduled in the second half of Tuesday afternoon: a written summary of the conclusions and final recommendations on R&D, future milestones and collaboration meetings will be circulated by Tom Taylor to all the participants before the end of March. SESSION 1: LHC Upgrade Scenarios (Steve Peggs) ---------------------------------------------- target luminosity, upgrade paths and priorities, AP limitations, magnet requirements, hardware limitations (other than magnets) We expect a few contributions focussed on Accelerator Physics and possibly on Cryogenics and Vacuum, including the summary of an LHC Upgrade Feasibility Study to appear soon as a CERN report. SESSION 2: IR Layout and Magnet Parameters (Jim Strait) ------------------------------------------------------- IR optics, layout, crossing scheme, radiation issues, magnet perspectives, field errors and correctors, matching section We expect talks on insertions, IR optics, radiation issues and energy deposition, field errors and correctors, possibly comparing LHC results to expectations. SESSION 3: Magnet Technology and Conductor Developments (Lucio Rossi) --------------------------------------------------------------------- technology of high field magnets, operating temperature and stability margin, HTS magnets, Nb3Sn, MgB2 We expect a panel discussion on the technology of high field magnets with short presentations of several speakers from different labs and institutions. There may be 1-2 dedicated contributions on conventional quadrupole design, HTS magnets and alternative design for Nb3Sn quads. SUMMARY TALKS ------------- EXECUTIVE SESSION: Conclusions and Recommendations (Tom Taylor) --------------------------------------------------------------- resources&plans, R&D, future milestones