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Forward (Nose Cone) Calorimeter: Update

2.5 mm. Forward (Nose Cone) Calorimeter: Update. Physics. A-dependence of the partonic structure functions at small x - g + jets / isolated lepton pairs / lepton pairs + jets A-dependence of pt-broadening (black body limit) - p 0 ’s

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Forward (Nose Cone) Calorimeter: Update

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  1. 2.5 mm Forward (Nose Cone) Calorimeter: Update E.Kistenev, Forward Upgrade Meeting 08/18/04

  2. Physics • A-dependence of the partonic structure functions at small x - g + jets / isolated lepton pairs / lepton pairs + jets • A-dependence of pt-broadening (black body limit) - p0’s • Spin dependence of the gluon structure function (via W production) • lepton-isolation, total yield in e-channel E.Kistenev, Forward Upgrade Meeting 08/18/04

  3. NCC MUST have superior pattern recognition capabilities fine laterally and longitudinally segmented sampling calorimeter !!! given real estate constrains ->W+Si Spec’s …. • - reasonable resolution fore/m showers – the only measurement which can be precise given all PHENIX Forward constrains; • e/g and charged/neutral hadron separation; • - g/p0 identifier; • - jet recognition, good space vector, reasonable 4-vector jet measurements; • combined muon tracking starting close to production vertex; • e/g/jet triggers; E.Kistenev, Forward Upgrade Meeting 08/18/04

  4. Cost of curiosity E.Kistenev, Forward Upgrade Meeting 08/18/04

  5. Concept in general & Cost (no cont.) E.Kistenev, Forward Upgrade Meeting 08/18/04

  6. Cost saving options Further cost/benefits analysis may result in ~10% total cost reduction: • increasing thickness of the W plates (to 3mm) and Si layers (to ~500mkm) will reduce the total amount of Si in calorimeter; • (2) increasing the pad size to ~2x2 cm2 will reduce the number of channels but ….. will make pattern recognition even bigger a challenge. • Biggest cost items are (1) Si, (2) Preamps and (3) Digital readout. • We are currently trying to clarify answers to two questions: • Do we really have the collaborator who can do the preamp development at no cost to PHENIX – item (2); • Is there really out there the digital readout for ~10k channels available for free - item (3). E.Kistenev, Forward Upgrade Meeting 08/18/04

  7. E.Kistenev, Forward Upgrade Meeting 08/18/04

  8. R&D 2004-2006 US ( BNL ++) • Conceptual mechanical design (BNL/Dubna); • Conceptual system design (BNL/Nevis/Trieste); • Prototype mechanical design (UCR/BNL/Dubna); • Component testing and prototype construction (UCR/BNL/MSU); • Full readout for prototype testing (BNL/MSU); • Test beam setup (at BNL/IHEP/KEK ?); • Packaging concepts (BNL/MSU) MSU • Pad Sensors • Readout units & cables • Receiver boards Prague • Strip sensors, SVX4 learning curve in - electronics engineer from Prague must first to go to ORNL (October/November probably !!!!!) then  to Japan (Atsushi) to help with sensor/SVX4 testing in Japan; Trieste • Preamps Dubna • Mechanics E.Kistenev, Forward Upgrade Meeting 08/18/04

  9. Getting through the development stage Coordination of this project is probably the biggest challenge. Both R&D and production are supposedly mostly in Europe, in difference to the central tracker project we have NO strong OUT-of-US group able to serve the center of gravity for this project. If no one else is interested – this will be a role BNL must play …. with no control over project money – will it work? E.Kistenev, Forward Upgrade Meeting 08/18/04

  10. How to integrate NCC into PHENIX E.Kistenev, Forward Upgrade Meeting 08/18/04

  11. NCC readout concept (Chi) receiver digitizer Delay/ event buffers To DCM receiver digitizer Delay/ event buffers Total channel count: Calorimeter 2060+2060+3584 g-p0 identifier 8240 L1 trigger board Trigger Sum Readout method: Digitize signal as early as possible Generate trigger sum output (2X2) from the ADC output E.Kistenev, Forward Upgrade Meeting 08/18/04

  12. Possible implementation DCM 10 units maximum Readout unit Readout unit 256 analog lines Preamplifiers Max 256x10 inputs Si Sensor Digitizer & FPGA based pipeline Flex cable Receiver Trigger processor E.Kistenev, Forward Upgrade Meeting 08/18/04

  13. PHENIX Grand Central E.Kistenev, Forward Upgrade Meeting 08/18/04

  14. Terminal buildings …. Receivers E.Kistenev, Forward Upgrade Meeting 08/18/04 NCC

  15. Real estate sharing Central tracking communication lines Digitizer Boards NCC readout location on the surface of magnet pole E.Kistenev, Forward Upgrade Meeting 08/18/04

  16. The end E.Kistenev, Forward Upgrade Meeting 08/18/04

  17. Urgent Technical progress on • Skeleton support structure allowing staged implementation of the new PHENIX central detectors; • Design of NCC Mechanics (in collaboration with potential manufacturers); • Component analysis of the NCC readout. Managerial support for • NCC needs equal standing with all other components of the new PHENIX Central; • R&D funds for 2005; • Help from BZ to cement the Collaboration. E.Kistenev, Forward Upgrade Meeting 08/18/04

  18. What’s going on now…. • MSU – ready to work … • Trieste – possibly one person working part time on preamps for NCC in 2005; • Prague (Institute of Physics + Charles University) – planning to apply for funding under umbrella of US-Czech Cooperation (dead line – September) • Dubna – will probably help with mechanical design & construction • Iowa – will work on trigger • BNL / UCR / Nevis – everything else and more to come ….. E.Kistenev, Forward Upgrade Meeting 08/18/04

  19. Ultimate e - h separation SPS Test Beam Data: p & e- 200 GeV/c - 10GeVp 10GeV e- E.Kistenev, Forward Upgrade Meeting 08/18/04 M.Boezio, INFN, Trieste, PAMELA

  20. Partonic structure functions E.Kistenev, Forward Upgrade Meeting 08/18/04

  21. Reaching into saturation region pp, 100+100 m-pairs pp, 250+100 E.Kistenev, Forward Upgrade Meeting 08/18/04

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