ILC Detector RD as seen by the Detector RD Panel 2005-2007 and beyond

ILC Detector RD as seen by the Detector RD Panel 2005-2007 and beyond PowerPoint PPT Presentation


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ILC Detector RD as seen by the Detector RD Panel 2005-2007 and beyond

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1. 10th September 2008 ILC Detector R&D Chris Damerell 1 ILC Detector R&D as seen by the Detector R&D Panel 2005-2007 and beyond … (was for 3 years a Panel of the World-Wide Study Organising Committee) Jean-Claude Brient, Chris Damerell, Ray Frey, Dean Karlen, Wolfgang Lohmann, Hwanbae Park, Yasuhiro Sugimoto, Tohru Takeshita, Harry Weerts Chris Damerell (RAL)

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5. 10th September 2008 ILC Detector R&D Chris Damerell 5 The three detector concepts

6. 10th September 2008 ILC Detector R&D Chris Damerell 6 Do we need R&D for ILC detectors?

7. 10th September 2008 ILC Detector R&D Chris Damerell 7 e+ e- ? t tbar

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10. 10th September 2008 ILC Detector R&D Chris Damerell 10 A physics example – e+ e- ? b bbar

11. 10th September 2008 ILC Detector R&D Chris Damerell 11 Quark charge determination from ‘vertex charge’

12. 10th September 2008 ILC Detector R&D Chris Damerell 12 Reviews of ILC Detector R&D PURPOSE: Improved communication leading to enhanced R&D programmes Get representatives of all R&D groups together for face-to-face discussions Engage world-leading consultants from outside the ILC community, who would surely provide new insights – they did! Ideally, the committee report would do little more than document mutually agreed changes from each review “If you don’t have buy-in, you can’t effect change.” The reality proved a bit more complicated, but also more productive, due mainly to fresh contributions from those consultants ----------------------------------- SCHEDULE: 3-day reviews were included in the 2007 regional workshops: Beijing (Feb ’07) Tracking DESY (LCWS June ’07) Calorimetry Fermilab (Oct ’07) Vertexing

13. 10th September 2008 ILC Detector R&D Chris Damerell 13 Tracking Review Committee Panel members: Chris Damerell (chair), Dean Karlen, Wolfgang Lohmann, Hwanbae Park, Harry Weerts External consultants: Peter Braun-Munzinger, Ioanis Giomataris, Hideki Hamagaki, Hartmut Sadrozinski, Fabio Sauli, Helmuth Spieler, Mike Tyndel, Yoshinobu Unno Regional representatives: Jim Brau, Junji Haba, Bing Zhou RDB chair: Bill Willis Local tracking experts: Chen Yuanbo, Ouyang Chun Admin support: Naomi Nagahashi, Maura Barone, Maxine Hronek, Xu Tongzhou

14. 10th September 2008 ILC Detector R&D Chris Damerell 14 We reviewed the LCTPC, CLUCOU, SiLC and SiD tracking R&D collaborations We were extremely impressed by the R&D programmes of all these groups, in some cases with very limited resources However, we concluded that we are currently far from the goals, for all tracking options Building a tracking system with excellent performance for qp >7 degrees will be challenging. Never achieved before and feasibility is not yet demonstrated Forward tracking has generally performed badly. We all know the solution (drastic reduction in material budget) but can this be achieved in practice? We became convinced of the need to construct large prototypes (~1 m diameter), and operate them under ILC-like beam conditions in a 3-5 T field, to establish what performance will be achievable at ILC, both for central and forward tracking Not all the R&D collaborations felt that this would be necessary

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16. 10th September 2008 ILC Detector R&D Chris Damerell 16 The most serious concern of the committee was the material budget, particularly how badly this might degrade the forward tracking: For TPC tracker, can the endplate thickness really be reduced to ‘well below 0.3 X0 possibly 0.1 X0’? Our expert consultants were extremely doubtful Franco Grancagnolo’s drift chamber could probably be made pretty thin, but would it provide robust track finding for high energy jets? Detailed simulations needed For a silicon strip tracker, everyone now agrees that the ‘momenter’ concept is flawed. Will 5 single-sided layers (barrel or disks) suffice, or will there be serious pattern recognition problems, for example for high energy jets containing long-lived Bs, necessitating more layers and hence more material? Discussions with our consultants led to a new suggestion – a silicon pixel tracker (SPT) which could deliver excellent pattern recognition for tracks in high energy jets, with very little material over the full range of polar angles A preliminary study of this idea by Konstantin Stefanov looked promising – and we have been able to make a bit of progress since … A new idea – Silicon Pixel Tracker

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26. 10th September 2008 ILC Detector R&D Chris Damerell 26 Calorimetry Review Committee Panel members: Jean-Claude Brient, Chris Damerell, Wolfgang Lohmann (chair), Ray Frey External consultants: Marcella Diemoz, Andrey Golutvin, Kazuhiko Hara, Robert Klanner, Peter Loch, Pierre Petroff, Jm Pilcher, Daniel Pitzl, Peter Schacht, Chris Tully Regional representatives: Junji Haba, Michael Rijssenbeek, Jan Timmermans RDB chair: Bill Willis Admin support: Martina Mende, Naomi Nagahashi

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28. 10th September 2008 ILC Detector R&D Chris Damerell 28 Two main categories: Very forward calorimetry (precision luminosity, hermeticity, beam diagnosics) FCAL Collaboration (15 groups) Doing a great job, but need additional resources, specially in USA General calorimetry (precise jet energy measurement in multi-jet events, DE = 30%sqrt(E) PFA approach: CALICE collab (41 gps), SiDCAL collab (17 gps, some in CALICE) Compensating calorimetry: DREAM collab (8 gps), Fermilab gp We were not able to exclude either option: much more work is required (and we might eventually need both to do the physics: PFA in barrel and compensating calorimetry forward) Overview of the review

29. 10th September 2008 ILC Detector R&D Chris Damerell 29 Tasks of the Forward Region

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37. 10th September 2008 ILC Detector R&D Chris Damerell 37 Vertexing Review Committee Panel members: Chris Damerell, Hwanbae Park (chair) External consultants: Yasuo Arai, Dave Christian, Masashi Hazumi, Gerhard Lutz, Pavel Rehak, Petra Riedler, Steve Watts Regional representatives: Tim Bolton, Chris Damerell, (Junji Haba) RDB chair: Bill Willis Local vertexing experts: Simon Kwan, Lenny Spiegel Admin support: Naomi Nagahashi

38. 10th September 2008 ILC Detector R&D Chris Damerell 38 ILC vertex detector – two main layout options

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58. 10th September 2008 ILC Detector R&D Chris Damerell 58 Developments since 11 December 2007 (Black Tuesday) In view of the extended ILC timescale, the detector R&D groups all need a broader base than ILC Vertex 2008 workshop last month demonstrated the huge area of common ground between monolithic and vertically integrated pixel developments for ILC, and requirements in other fields We are considering forming a new RD collaboration (RD52) to coordinate and stimulate this work (Rolf Heuer says that this collaboration ‘is highly welcome and you should go ahead’) Kickoff meeting 25th November in CERN With luck, the UK will continue to play a leading part in this blossoming field. Our keep-alive proposal (SPIDER) will be presented to the PPRP on 30th October. As with LC-ABD, we have lost some wonderful colleagues, but we still have some extremely talented people who want to continue, and who the international community wants to continue The events of last December were ‘scientific vandalism’, but fortunately a balanced plan emerged from the PP Consultation Panel, to whom we are most grateful

59. 10th September 2008 ILC Detector R&D Chris Damerell 59 What was in the planning tables coming into PR

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61. 10th September 2008 ILC Detector R&D Chris Damerell 61 Additional Material

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