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

E.Kistenev, Forward Upgrade Meeting 08/18/04 Physics A-dependence of the partonic structure functions at small x  + jets / isolated lepton pairs / lepton pairs + jets A-dependence of pt-broadening (black body limit)  0 ’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 - reasonable resolution for e/m showers – the only measurement which can be precise given all PHENIX Forward constrains; - e/  and charged/neutral hadron separation; -  /  0 identifier; - jet recognition, good space vector, reasonable 4-vector jet measurements; - combined muon tracking starting close to production vertex; - e/  /jet triggers; NCC MUST have superior pattern recognition capabilities fine laterally and longitudinally segmented sampling calorimeter !!! given real estate constrains ->W+Si Spec’s ….

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

E.Kistenev, Forward Upgrade Meeting 08/18/04 Concept in general & Cost (no cont.) ItemQuantityCost W1.8 t200k Si (calorimeter)14 m k Cables k Readout units384100k Preamps (16 ch) k Receivers5250k Digitization & pipeline k Si (strips)1.15 m 2 130k  /  0 ident. SVX4 readout 48100k Total today~2.5 m

E.Kistenev, Forward Upgrade Meeting 08/18/04 Cost saving options Further cost/benefits analysis may result in ~10% total cost reduction: (1)increasing thickness of the W plates (to 3mm) and Si layers (to ~500mkm) will reduce the total amount of Si in calorimeter; (2)(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 ItemTotal“Confirmed” cost Probable cost W1.8 t200k Si (calorimeter): Silicon wafers Sensors production and testing 14 m (good sensors) 912k 132k 780k Si (g-p0 identifier): Silicon wafers Sensors production and testing 1.15 m k 13 k 96k Flex cables (sensor PCB interconnect) k Readout units and cables PCB 140 contacts cables k 39k 58k Preamps 16 or 32 ch ( ~2$/ch in production) without R&D and chip design 40000ch300k SVX4 and service electronics: SVX4 Service electronics (could be used electronics from Fermilab - ?) Fastbus crate k + ???=100k 18k 32k ??? Digitization&pipeline, 12 bit ADC k (30% cont) EDIA on digital processing250k (30% cont) Trigger??? Global contingency400k (20%) Total known~2.5 m> 0.3m

E.Kistenev, Forward Upgrade Meeting 08/18/04 R&D 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 Getting through the development stage Prototype SensorsMSU / Trieste(strips)Early 2005Sizes mismatch Prototype readout~on shelf (MSU)Mid 2005$10k, DAQ, cables/connectors Prototype mechanicsBNL, UCR, Dubna?$10k Mechanical designBNL, Dubna+industry2005$30k Packaging concept & prototype BNL, MSU, Trieste2005Analog summing untested $30k Preamps & receiversTrieste, MSU2006$30k Dig. readout design & prototyping BNL, Nevis, Trieste2006 $250 k SVX4 learning curve & readout design for strip layers Prague, Trieste2006 Construction ~2 m 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 How to integrate NCC into PHENIX

E.Kistenev, Forward Upgrade Meeting 08/18/04 receiverdigitizer Delay/ event buffers receiverdigitizer Delay/ event buffers Trigger Sum To DCM L1 trigger board Readout method: Digitize signal as early as possible Generate trigger sum output (2X2) from the ADC output Total channel count: Calorimeter  0 identifier 8240 NCC readout concept (Chi)

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

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

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

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

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

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

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

E.Kistenev, Forward Upgrade Meeting 08/18/04 Reaching into saturation region  -pairs pp, pp,