Super B Detector StatusCal TechDec 2010 Geometry Task

Super. B Detector Status-Cal Tech-Dec. 2010 • • • Geometry Task Forces System by System Updates Workshop Goals/Structure. Blair Ratcliff SLAC Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Detector Geometry Selection Task Forces Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Super. B Detector (with options) Backward Task Force Super. B Workshop, Cal Tech, Dec. , 2010 Forward Task Force Blair Ratcliff, SLAC

Detector Geometry Definition Main Overall Geometry Choices Needed for TDR Bill Wisniewski Hassan Jawahery Task Force Meetings Wed. starting at 11: 00 this week with Joint meeting followed by separate afternoon sessions 4 Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Task Force membership Forward Geometry Selection Task Force l l l Hassan Jawahery, Chair Matteo Rama Brian Meadows Pasquale Lubrano Chris Hearty Backward Geometry Selection Task Force l l l 5 Bill Wisniewski, Chair Achille Stocchi Steve Robertson Gianluigi Cibnetto Dave Aston Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Forward PID Taskforce Activities and plans ¡ Membership: C. Hearty, H. Jawahery, P. Lubrano, B. Meadows, M. Rama ¡ Meetings: l l ¡ September 30; taskforce members at the general meeting in Frascati October 19, phone meeting of TF with the detector proponents The overall plan: l l Three technologies are proposed forward PID ¡ FARICH ¡ f. TOF or DIRC-like TOF: ¡ Pixilated TOF Key questions under study: ¡ ¡ ¡ ¡ l Physics gain – being studied by the Geometry working group Estimate of the adverse impact of a forward PID on FEMC and DCH Proof-of-Principal for each technology and its expected performance, including results of cosmic ray tests (initial results to be discussed at this meeting) & the impact of B field. Impact of background on the detector performance- need an accurate BKG model. Readout Integration Cost and schedule Intermediate review at this meeting, aiming for a recommendation in Spring. Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Forward PID taskforce Agenda Ø Session 1: (Joint with BEMC) (Dec. 15 at 11: 00 - 12: 30) Ø Introductory remarks - H. Jawahery (5’) Ø Physics impact of Forward PID - Matteo Rama (40’+10’) Ø Test beam study of impact FPID on F-EMC - Stefano Germani (20’) Ø Session 2: (Dec. 15, 14: 00 - 15: 30) Ø Presentations on f. TOF & responses to TF questions. 1) Introduction FTOF (+ Cost estimate) A. Stocchi/N. Arnaud 30' 2) CRT Experiments i) set up/electronic D. Breton 25’ ii) results of data analysis L. Burmistrov 25’ iii} next step for this experiment A. Stocchi 10’ Ø Session 3: (Dec. 15, 16: 00 - 17: 30) Ø Presentation on FARICH & responses to TF questions - Evgeni Kravchenko (40’) Ø Presentation on Pixelated TOF & responses to TF questions - Jerry Va’vra (30’) Ø Session 4: (Dec. 16, 9: 00 - 10: 30) Closed meeting of TF Report to the Tech-board on Thurs by the Taskforce Chairs. Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Detector Proto-Tech Board/Parallel Session Conveners Detector Coordinators – B. Ratcliff, F. Forti Technical Coordinator – W. Wisniewski ¡ ¡ ¡ ¡ ¡ SVT – G. Rizzo DCH – G. Finocchiaro, M. Roney PID – N. Arnaud, J. Vavra EMC – F. Porter, C. Cecchi IFR – R. Calabrese Magnet – W. Wisniewski Electronics, Trigger, DAQ – D. Breton, U. Marconi Online/DAQ – S. Luitz Offline SW l l l ¡ ¡ ¡ Simulation coordinator – D. Brown Fast simulation – M. Rama Full Simulation/Computing – F. Bianchi Background simulation – M. Boscolo, E. Paoloni Rad monitor – Lumi monitor – Machine Detector Interface – +DGWG – A. Stocchi, M. Rama +Geometry Selection Task Forces- H. Jawahery, W. Wisniewski Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Detector Systems Status Reports • • • Advertisement for System Parallel Sessions. Highlight Detector Subsystem R&D Sorry that I must be so brief Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Background Simulation/MDI-Eugenio Paoloni Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Backgrounds simulation ¡ Improvements of the Super. B Geant 4 model l Better model of the SVT (R. Cenci). Finally there are 8 realistic modules instead of a single unrealistic cilinder : ) l Latest IR design from Mike & lattice parameters from Panta(Alejandro) l Beam pipe modeled up to the first dipole ~12 m from the IP l Better beam pipe model at the IP (R. Cenci) Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Backgrounds simulation ¡ ¡ Improvements of the Bruno software (Alejandro) Check of the correctness of the magnetic model (Alejandro): both the old IR model (P 3) and the latest one are in good agreement with Mike simulations Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

SVT-Convener Rizzo Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

SVT Update: Main progress on pixel R&D Details in the SVT Parallels Hybrid Pixel First results on Front-End chip bump-bonded to sensor matrix ¡ l Prototype hybrid pixel module in preparation: – – l Bump-bonding of 3 FE chips with sensor matrix Finalize Al bus design for prototype module New version of FE chip for hybrid pixel in preparation: – – With vertical integration (2 CMOS layers interconnected) New readout architecture (data push & triggered version implemented) • Threshold tuning at pixel level Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

SVT Update: Main progress on pixel R&D CMOS MAPS Radiation damage studies: charge collection after neutron irrad. up to ~ 7 x 1012 n/cm 2 ~3. 5 x 1012 n/cm 2/yr expected in Layer 0 ¡ l After a long delay first MAPS with vertical integration process (Chartered 130 nm) finally getting ready. – l 2 D wafer delivered- 3 D wafers due in Feb 2011 Vertically integrated MAPS for the II 3 D run (June 2011) in preparation: – Simulation of the new readout architecture ready (data push & triggered version) » – l First Chartered 2 D wafer delivered Efficiency vs trigger latency studied Large matrix area (128 x 100 pixel): layout of the digital tier for matrix ready. Getting organized for 2011 Testbeam Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

DCH-Conveners Finnocchiaro & Roney Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Activity @ LNF: R&D on Cluster Counting Local derivative method l. BUFFER l. DISCRIMINAT OR l. AMPLIFIER l. BUFFER l. VTH close to the system noise limit ¡ l. VTH l. DELAY (5 -10 ns) First tests on 2. 5 m long, 24 mm side square tube in He-CH 4 mixture l threshold and delay still to be optimized Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

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Update on DCH Full. Sim Studies at Mc. Gill ¡ ¡ ¡ Addressing the issue of how to define "occupancy" in the absence of an actual detector response simulation. Requires study of how GEANT handles energy deposition in the context of low energy tracks and variable step size. The total d. E/dx energy deposit is the same regardless of step size, but for small step size the charge is deposited more uniformly along the track length whereas its much more "clumpy" for large step size (since only one energy deposit per step). The latter “clumpy” case could result in underestimation of the occupancy, but small step size is prohibitive in terms of cpu time and file size. have validated that the physics is correct in either case (i. e. same number of tracks and average d. E/dx ) in GEANT occupancy is dependent on GEANT’s step size choice - still working on algorithm for determining occupancy Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

PID-Conveners Vavra & Arnaud Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Barrel PID FBLOCK [SLAC] Raw block has been produced by Corning and is ready to be shipped. Had to make a new quote request for the FBLOCK machining operation because a buyer made a silly mistake in the first round. The search has 10 companies involved. FDIRC prototype studies in CRT [SLAC] FDIRC prototype is now being used to study Cherenkov ring resolution & its tails. m+ m Ba. Bar DIRC: Matt is happy: Bar boxes removed from Ba. Bar [SLAC + LAL + Saclay] And safely stored. Bars look good to visual inspection. Some PMT studies performed. Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Barrel PID Mechanics [Padova + SLAC] Ongoing work on the mechanical design for the CRT test. Ma. PMTs [Maryland + SLAC] Modified SLAC PC board for Ma. PMT amplifiers ready. Electronics [LAL-Orsay + LPNHE-Paris] Front-end chip architecture still being discussed Need to match the background requirements and the TDC readout SCAT (100 ps TDC) architecture completely defined (behavioral simulations done) Layout of the chip from part almost done; readout design ongoing Background [SLAC] Simple rate estimates updated after a recent visit to Belle-II collaboration meeting. Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Forward PID FARICH [Novosibirsk] Test beam in progress DIRC-like TOF [LAL-Orsay + SLAC] Large data sample collected in CRT telescope. Analysis in progress A simple pixilated TOF using a LYSO crystal [SLAC] Caltech provided a full size LYSO crystal. SLAC prepared a detector setup. The prototype with 4 x 4 G-APD array readout is now being tested in CRT. More simple version with single 3 mm x 3 mm G-APD will be tested in January. Data taking in progress. Electronics [ LAL-Orsay] Ongoing work on ASICS and system sides Design of a 16 channel board One step further towards a demonstration that 10 ps precision can be achieved with 100+ channels Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

EMC-Conveners (Cecchi & Porter) Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Test Beam at CERN October 11 th – 31 st SETUP Data collected at energies of: 1 Ge. V : ~ 95000 - 64% e 1. 5 Ge. V: ~ 20000 - 60% e 2 Ge. V: ~ 40000 - 48% e 3 Ge. V: ~9500 - 30% e 4 Ge. V: ~ 650 - 25% e. Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

l. First look at the data…. MIP is under study, in particular the three components have to be understood: -first peak empty events not seen by Cherenkov, crystals and scintillator pad behind the matrix - Third peak is under investigation - Clean peaks from MIP’s and electrons Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

First look at the data…. Electron energy deposited in the central crystal (12) and in the 8 crystals around it MC is being tuned to add known effect present in the data. Some improvement is still needed. Description of the electronic noise, temperature corrections, simulation of the LYSO uniformity… Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Detector Elements-IFR-Convener Calabrese Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

IFR Advances since last meeting • All needed Si. PM received and characterized • Prototype completed, tested with cosmic and shipped to FNAL • Prototype tested (1 -7 Dec 2010) at Fermilab Meson Area • 9 layer configuration tested with different readout schemes (5 Bi. RO layers and 4 TDC layers) l. Pizza Box 31

IFR Goals for this meeting • Review advancements and achievements in all the development areas • Particular focus on prototype beam test • Analyze the TDR preparation process and prioritize the short and medium term activities Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Towards the TDR l. Fall 09 finalize prototype design (mechanics and electronics) l. December 09 place orders for prototype construction l. January 2010 l. October 2010 l. December 2010 l. Spring 2011 Super. B Workshop, Cal Tech, Dec. , 2010 prototype preparation prototype test with cosmics LNF meeting situation beam test @ FNAL analyze/review test results Blair Ratcliff, SLAC

Electronics, Trigger and DAQConveners, Breton, Luitz, & Marconi Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

l. What was done since Frascati workshop 35

l. What we expect from this workshop 36

Fast. Sim-Dave Brown Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Fast. Sim work since October • Top-of-arc problems addressed • Fix flaw in multiple scattering (log term) • Code cleanup • Improve measurement interface • Simplify edml (xml) config description • Refactorize hit merging and pat. rec. confusion • Plan for release of public Fast. Sim package • New public svn repository in Padova (Fast. Sim) • Renaming of classes and packages • Removal of Ba. Bar, Super. B dependencies Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Top-of-arc problems • Fast. Sim models DC layers as cylinders • Hits generated as particle crosses fixed radius • Material effects computed from 1 st order calculation • Particle at top-of-arc goes transverse to layer • Multiple hits in a single layer • Gas material given by arc through layer • Fast. Sim fixes • Compute gas path using 2 nd order calculation • Generate # hits according to gas path • Nhits in layer ≅ pathlength/cellsize + 1 Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Top-of-arc Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Multiple Scattering • PDG • Describes Gaussian approximation to 98% core • 11% accurate for x/X 0 > 10 -3 • NB: 1 cm Ar/Ethane has x/X 0 ~ 10 -5 • Cannot be added in quadrature due to tails! • Fast. Sim was hardcoded to Ba. Bar tuning • 2% 10 X tails, x/X 0 ~6% in log term • Used in both simulation and reconstruction • over-estimated Super. B scattering (no support tube) • Short-term fix: set x/X 0 to ~2% in log term • Long-term fix: use full Moliere scattering model Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

DGWG- M. Rama and A. Stocchi Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Detector geometry working group Main goal at this meeting • Review the studies concerning the physics case for the backward EM calorimeter and the forward PID detector • The results will be further discussed in the detector geometry task forces sessions tomorrow l. Sessions today Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Agenda Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Detector Related Workshop Sessions 45 Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC

Focus of Workshop • Global System and Integration Issues • • Review substantial ongoing R&D Refine understanding needed towards final subsystem and general system design • • • 46 Forward and Backward Task Forces Computing & Simulation Complete Design R&D (Beam Tests & Milestones) Integration Organization Build Manpower, Add Institutions Deeper WBS Define Specific Resource (Manpower and Budget Needs) Specific TDR Production Plans Documents and Planning Now Detailed Resource Planning & Requirements for TDR phase. TDR (~ 1 year). Hope that Godot is coming. Super. B Workshop, Cal Tech, Dec. , 2010 Blair Ratcliff, SLAC