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KLOE-2: Status report

KLOE-2: Status report. Overview. Two major ongoing activities Maintenance and upgrade of the KLOE apparatus, includes beam pipe and inner region gas system electronics (DC, calorimeter,trigger) L2 CPUs networking online farm computing power for data reconstruction storage system

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KLOE-2: Status report

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  1. KLOE-2: Status report

  2. Overview • Two major ongoing activities • Maintenance and upgrade of the KLOE apparatus, includes • beam pipe and inner region • gas system • electronics (DC, calorimeter,trigger) • L2 CPUs • networking • online farm • computing power for data reconstruction • storage system • R&D for the new detector systems • the gg-taggers • the inner tracker • the crystal calorimeters for the inner region • the quadrupole instrumentation

  3. Plan approval • In June the part not already funded has been approved • In September plans for year 2009 have been reviewed • They include, for step-0, or KLOE1.5: • detector revision and refurbishment, • setup and test of the new DAQ, • revision and test of the Slow-Control, • setup of a new storage system, • roll-in operations, • data taking • The gg-tagger design will be ready in March. • Funds available. • Tagger will be reviewed in April. • Three months for the realization • Installation with the IR (LET) and the other works on DAFNE

  4. KLOE-2 plans • The other upgrades have been funded to complete the R&D phase and finalize the detector design. • Inner tracker, end 2008-2009: • test of the procedure for layer construction using CF cylinders and anode embedded • test of the new (large area) GEM • test and optimization of the readout system on the new devices • TDR for the inner tracker – End of June 2009 • Crystal calorimeters (CCALT): • BTF test-beam : LYSO crystals from several manifacturers, SiPM coupling, readout system from LNF Electronic Service • Quadrupole Instrumentation (QCALT): • Test on a small prototype • Detector design – End of August 2009 • Realization of the module-0 - December 2009

  5. Beam pipe • Interaction zone • Beam pipe with quadrupoles and QCAL extracted from KLOE • Operation carried out middle of September • alignment of insertion rails • insertion of extraction shell • connection to beam pipe • Extraction Work completed

  6. Beam pipe modification • Spherical Be beam pipe, 10 cm radius, to minimize Ks interactions • Optimal sample for QM interference • Internal to the sphere: 50 mm Be cylinder • Preferred solution for connection with the new beam pipe: • external part as it is, connected to the first quadrupole, QD0 • internal cylinder connected to the new beam pipe with cone-shaped Al section

  7. Beam-pipe supports

  8. KLOE B-field correctors • Studies have been carried out by AD for three B-field intensities: 5.2, 4.5 and 3.0 kGauss • A new correcting dipole after QF1 needed • Compatible with KLOE DC, further detector upgrades, end-cap opening Bkloe=5.2 kG No dipole ∫Bdz=446Gm Y(m) QF1s QD0 QF1s QD0

  9. Summary of plans for the IR • Continuous cooperation with the AD established • Milestones: • Extraction of the IR from KLOE – Done • Cut the central part – Dec08 • Design of the connection part of the beam pipe ready – Dec08 • Beam pipe available in May09 • Design of the dipoles ready – Dec08 • Dipoles available in summer 2009 • Design of the Beam pipe mechanical support ready – Feb08 • Planning compatible with • KLOE roll-in in summer • Beam pipe insertion – Sep09 • Cryogenic system reconnection – Sep09 • Start of Magnet cooling – Sep09 • DAFNE commissioning with KLOE – Nov09

  10. Gas system • Gas system reorganized • Reallocation of external Gas storage racks • control system on new PC - readout boards - ready • Manual operation established • new readout boards (and PC) purchased (spares) • To do list • Investigate if the gas flux can be reduced (gas analyzer) • Investigate if the control scheme can be simplified • Re-establish automatic procedure

  11. Detector preparation • DC: • continuing flushing with nitrogen • Crate cleaning • FEE debugging with pulser system • in summer: He-Isobutane flushing and debugging completion • readout boards : spares in production • Test stand for ADC/TDC • EMC • Crate cleaning • FEE and HV debugging • readout boards : spares in production • Test stand for ADC/TDC • Trigger • Spares in production

  12. Rock Rock Rock FEE crate FEE crate FEE crate VME + AUXbus VME + AUXbus VME + AUXbus Vic Vic Vic Rock Rock Rock FEE crate FEE crate FEE crate VME + AUXbus VME + AUXbus VME + AUXbus CBUS CBUS CBUS Vic Vic Vic RockM RockM RockM L2 crate L2 crate L2 crate VME VME VME CPU CPU CPU FDDI connection DFC FDDI Switch Farm CPU Farm CPU Farm CPU DAQ • L2 CPU (Motorola) have been ordered. Waiting for the delivery • Online Farm (RM3). Waiting for installation • Networking (RM3). Ordered. • Slow Control: • Porting of software on KLOESLOW (AIX) proceeds • spare control boards refurbished during 2009

  13. Computing Upgrades • New hardware has been bought and delivered: • 2 fast servers for user analysis (fibm11,12 replacement) • 100 cartridges + 4 TB disk space • Offline farm power to be improved from 30 fb-1/day to 50 fb-1/day • Purchase of 16 Power5+ CPU, 1.9 GHz, 16 GB RAM • New servers being put on-line • KRUNC (KLOE Run Control) • 2 new DB servers • new KLOESLOW • Storage capability to be increased by 0.9 PB • corresponding to 5 fb-1 at 175 TB/fb-1 (Raw + rec + dst + MCdst x 2) • Upgrade of Library #2. From 6 to 12 new mount points with higher writing density • 0.4 PB obtained writing at higher density the existing 2100 cartridges (from 300  500 GB) • 0.5 PB obtained from 500 new cartridges of 1 TB

  14. Storage system upgrade • DAS Disk system (30 TB) for data taking and data processing • Storage capability to be increased by 0.9 PB • corresponding to 5 fb-1 at 175 TB/fb-1 (Raw + rec + dst + MCdst x 2) • Upgrade of Library #2. From old 6 to 12 new mount points • 0.4 PB obtained writing at higher density the existing 2200 cartridges (from 300  500 GB) • 0.5 PB obtained from 500 new cartridges of 1 TB • New controller and ~50 TB of disk space for DSTs • Funded • EU bid starting in March

  15. gg-physics with KLOE1.5 • The tagger for gg-physics can significantly improve the KLOE sensitivity helping in background reduction and giving the invariant mass • Tagger system design will be reviewed in April (documentation ready in March) • Electrons (positrons) in the high-energy range leave main orbit after the dipole • Those of low-energy escape BP in the quadrupole region HET (450 MeV region) LET (200 MeV region)

  16. Electron tracking • DAFNE magnetic layout simulated with MAD and BDSIM LET

  17. LET Detector QCALT LET • Technology: PbWO + SiPM • 3x10 crystals • 5 cm thick (enough to contain shower due to high impact angle) • 3x3 mm2 SiPM (2 for each crystal) • ~2pe/MeV expected  σE/E = 5÷10% Test beam at BTF to measure energy and time resolutions by end 2008

  18. PbWO • PbWO • PbWO • PbWO LYSO Scionix LYSO Scionix • LYSO • SG LYSO Scio • LYSO • SG • LYSO • SG • LYSO • SG LFS LFS LFS • PbWO • PbWO • PbWO • PbWO Test Beam at LNF • Built a crystal matrix in order to study the different LYSO-like options for CCALT and the PbWO for LET • Energy resolution, time resolution, efficiency, spatial resolution to be measured and compared with simulation

  19. HET positioning • Tecnology: Si micro strip + plastic scintillator • Dipole is used as a spectrometer • Energy resolution depends on strip pitch (final design by March 2009) • Possible placement in an accessible H-H’ flange after the dipoles FEE detector

  20. Inner Tracker Numbers • 5 tracking layers • 200x500 µm spatial resolution • 700 mm active length • from 150 to 250 mm radii • 1.8% X0total radiation length • Technology: Cylindrical-GEM Inner Tracker Drift chamber • IT Proto 1.0 • Constructed in 2007 • 150 mm radius (Layer 1) x 352 mm active length • 650 µm pitch only along Z • 192 chequipped with CARIOCA • 128 ch with GASTONE

  21. Test beam results show • triple-GEM efficiency as high as 99.6% • spatial resolution of 200 mm with a readout pitch of 650 mm GEM residuals with respect to the track reconstructed by drift tubes (150mm resolution) 2 (global) = 2 (GEM)+ 2 (tracker) 2 (GEM)= 2502µm2 – 1402µm2  2002µm2

  22. Inner Tracker • IT-CGEM Prototype 1.0 • Construction • X-ray test • Cosmic-ray test • Testbeam @ CERN-PS • Next Prototypes • 10x10 cm2 chamber to test XV-readout (RD51 at CERN) • 50x70 cm2 chamber to test new large GEM foils • Carbon-fiber cylinder for mechanical tests + anode construction procedure • Engineering work • Toolings for detector construction – from full-size prototype and ongoing R&D • Mechanical structure for readout electronics • Integration and installation system - started • Simulations • Gluing region electric field • New GEM hole geometry • Finite-elements mechanical simulations (ANSYS) • Front-end Electronics • GASTONE 16CH • GASTONE 64CH (prototype by end of 2008)

  23. FEE-HV-Detector Integration carbon-fiber shell Study of a possible arrangement of HV-connectors, gas inlets, mechanical support for FEE boards FEE board kapton readout circuit ASIC fiberglass FEE support gas inlets/outlets signal connector HV connector

  24. QCALT: a Quad Calo with Tiles • Technology: Scintillator-tiles + WLS + SiPM • 12 Wedges with 20 towers along Z • Each tower with 5 layers of tiles (5x5x0.5 cm3) • 3.5 mm Tungsten used as absorber to reduce space • Total calorimeter depth 4.75 cm equivalent to 5.5 X0 Integrated design with IT 24

  25. Tile Calorimeter • Fibers: Saint Gobain SC and MC, Kuraray SCSF81 • Tiles: BC 404 and BC 408 3mm thick SiPM 400pixel 5mm thick SiPM 100pixel • Plans: • dec 08. QCALT small proto: 3 towers and 2 planes • dec 09. Module 0 with final SiPM-Fiber connectors and proto final electronics (5xFEE amps + 3 VME SDSQ boards (HV supply + discr. + sum) 25 p.e. per MIP

  26. Conclusions • Dafne performance confirmed our plans for preparing KLOE to data taking • The project has been completely funded, including the R&D activities for all of the detector upgrades • We have started a close interaction with the AD for the IR • We are also strongly motivated to install the gg-tagger during 2009. • Technical Report on gg-tagger ready in March, reviewed in April by CSN1 • We are thinking to organize sometimes in February-March an informal workshop to review and prioritize the physics objectives of the project. Suggestions are welcome.

  27. Spares

  28. Pre LVPS board Control board Control Pre board ADC board Suppli board Caffe board Trigger Stage Control Drift Chamber • DC still kept with HV OFF. Continuous flushing of Nitrogen • Survey of FEE channels (Pre,HV,ADS) to be done TDC board DAQ ADS board Input Ampl. DAQ Disciminator Analog Sum HV board Trigger Stage Control CAEN HV system SY527 +A934AP • Production in progress of 1 equivalent full rack of ADS and CCC. • Spare amps arriving Trigger system Trigger system

  29. Custom LV System TDC board CTRL logic & interfaces DAQ Linear Low Noise power supply ±6V 50 A SDS board ±5V 50 A TAC Start A/D CFD DELAY LINE + Dis. Monostable – Stop Vth PM Adder x 1 ADC board S/H Shaper BESSEL FILTER – – V/I S/H + A/D + S/H + – CCC board CTRL logic & interfaces DAQ Test Pulser THR setting FEE Monitor & control Slow control interface EMC FEE/HV 8 HV crates have “fan failure”. Cleaning in progress Test-stand for TDC/ADC debugging ready CAEN HV system SY527 +A932AP L0 trigger PMbase HV divider 50 Ω cable PREAMP Trigger system L0 trigger Components for SDS,CCC and Power supply purchased

  30. Drift Chamber 12582 PM Calorimeter 4880 PM Sum of EMC signals Sum and digitization of DC signals Digitization and Logic processing Superlayer building Multiplicity counting DC Trigger Logic ADS SDS PIZZA Suppli Final decision EMC trigger logic TORTA Pre Caffe DISH PASTA Caffe T1 T2Y T1ACK Synchronizer and Fan-out FIO Trigger supervisor T2 T1 EMC TDC-ADC DC TDC DAQ Trigger • Spares in production: • Trigger supervisor (Bari) • 3 Trigger distributors • 2 TORTA • 4-6 Trigger receivers

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