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Status and Plan for KLOE-2 Upgrade at the 39th Meeting of the LNF Scientific Committee, October 26, 2009

This document provides an overview of the status and plan for the KLOE-2 upgrade, including roll-in plans, the status of various components (such as drift chambers, gas system, computing, and γγ taggers), and data taking plans.

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Status and Plan for KLOE-2 Upgrade at the 39th Meeting of the LNF Scientific Committee, October 26, 2009

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  1. 39th Meeting of the LNF Scientific Committee 26 October 2009 KLOE-2 Upgrade: Status and Plan Danilo Domenici

  2. Overview Step-0 • Roll-in plans • Status of DC • Status of Gas System • Status of Computing • Status of γγ Taggers • Data taking plans Step-1 • Status of QCALT • Status of CCALT • Status of IT D. Domenici

  3. Roll-in Plans • 3/11/2009. Start of roll-in operations (rescheduled after 2 months Siddartha extension) • 1/3/2010. Start of data taking (including Dafne maintenance) Oct 2009 Jun 2009 • Old Beam pipe removed • Beam pipe rails removed • Platform for detector • maintenance installed • - Air-platform installed • Plans for Rolli-in and detector alignment in cooperation with DA being • To safely operate the detector the procedures for maintenance + safety and alarms are being discussed / agreed upon with the “ServizioProtezione e Prevenzione” of LNF • Responsibility of KLOE-2 operations assigned: Overall responsible (TM; S.Miscetti), GLIMOS (E.Dane) • SLIMOS aka KLOE Run Coordinators yet to be assigned for the running phase • Machinery for KLOE-2 movement tested from ENERPAC the first week of October D. Domenici

  4. Status of Drift Chamber - All FEE channels checked; ~60 PRE cards replaced; few HV cards replaced; all (~12000) ADS and TDC channels tested in pulsed and cosmic runs. - DC switched on to the HV nominal values (1700/1900V) and nominal mixture: all wires/channel are ok - Wire mechanical tension measurement done: new sagitta values ready for MC All ready for long and stable data taking D. Domenici

  5. Status of Gas System • General survey of gas distribution to/from DC • Re-calibration of the whole gas system • Flux with nominal mixture (90/10 He/IsoC4H10) for two days • Analysis stage running and under control. • Check and improvement of the safety system • Careful check of DC leakage with sniffer: essentially no leakage found, as in previous 2003-2006 run. All ready for long and stable data taking D. Domenici

  6. DC + EMC Event RUN 47197 (23/10/2009) D. Domenici

  7. Status of Computing • New DAQ farms operative • Motorola system for data transfer (Level II) and • IBM system for event building and data storage (Level III) • New CISCO switches ready • reliable, high-speed (4 Gbit) trunking between Level II and Level III • New Servers operative • Slow Control: towards higher reliability for automatic runs • Run control • Data Base: redundant high-speed servers, HEPDB  DB2 migration • Data handling: faster, flexible and reliable • New storage system : contract ready for signature • 100 TB of disk space for the online farm and data processing • Upgrade of the automatic tape library with 12 new tape drivers for cartridges of 1 TB native capacity • 500 new cartridges • more than 900 TB available for long-term storage of KLOE-2 data D. Domenici

  8. Status of Interaction Region Design of beam-pipe support frozen, relevant also for Step-1 integration See M.Boscolo talk for more details D. Domenici

  9. Status of γγ Tagger • The system is composed by 2 couples of detectors at different distances from IP, to cover most of the γγ invariant mass spectrum • LET (Low Energy Taggers) are LYSO calorimeters placed inside KLOE • HET (High Energy Taggers) are scintillator hodoscopes placed at 11m on the beam line • The “γγ Tagger TDR” has been completed and delivered to KLOE INFN-referees in July D. Domenici

  10. Status of LET The detector is composed by a LYSO crystals matrix with a SiPM readout IR 1.5 m LET Positioning of detector and support mechanics designed with Accelerator Division 420mm diameter ok for installation (insertion of LET after beam-pipe installation) 130-230 MeV/c electrons are tagged in this position D. Domenici

  11. Status of LET 3x3mm2 SiPM SiPM 3x3mm2 with 25um pixel (14400pixels) are produced by Hamamatsu (already in our hands) • Status of crystals: • July: 45 LYSO crystals ordered to SICCAS (15x15x120 mm3; LY = 650 p.e./MeV) • early September: LET delegation in Shanghai to setup the test system for the measurement on-site of Light-Yield and Longitudinal Uniformity • mid September: production started • 12 October: 27 crystals delivered to Rome (LY measured again) • 19-22 October: testbeam at BTF with a matrix of 20 crystals (final test for FEE arrangment) (SiPM+Cables+Amp) (Amp external to KLOE: no delay for Installation) • 15 November: foreseen date for delivery of remaining crystals Testbeam at BTF Oct 09 D. Domenici

  12. Status of HET The hodoscope is composed by two rows of 15 3x5x6 mm3 scintillators + 2 3x5x120 mm3 scintillators for coincidence to be inserted in the DAFNE beam-pipe with a dedicated motorized driver Nominal orbit The design has been finalized and a suitable company for the realization has been contacted. Production foreseen in December. (test of the proto of the “nose” under pressure ok) D. Domenici

  13. Status of HET • Fast plastic EJ-228 scintillators already in the laboratory • Readout with light guide coupled to R9880-110 type PMT (QE = 35%). Delivery foreseen in November. • The final readout boards are expected for end of February σ = 140 ps • Testbeam performance • Light yield > 50 p.e./MIP • Time resolution 300 ps(sharp separation between consecutive bunches) Time resolution (T1-T2) D. Domenici

  14. KLOE-2 planning and funding Data taking plan We asked for a first data taking run of 12-15 months, after which the upgrades will be ready. Assuming to start on March, we could be ready for the Step-1 for Summer 2011 We expect a regime luminosity of at least 300 pb-1/month (already in the DAFNE potential) 15 pb-1/d Funding CSN1 already funded Step-0 (including computing and LET/HET). In September meeting the other upgrades (IT, QCALT and CCALT) have obtained positive peer-review. Funding for the work scheduled until June 2010 assigned (mostly for the construction of one layer of IT). The status of the project will be reviewed in Spring 2010 to discuss further funding. 10 D. Domenici

  15. The proposed upgrades • 3 new detectors are proposed for the upgrade in the second run of KLOE-2: • An Inner Tracker (IT) to improve both the vertex resolution and the acceptance on low-momentum tracks • A new QCAL, needed by the changed design of the Interaction Region to detect photons from KL/K+- decays in DC • A forward calorimeter (CCALT) to improve the acceptance on low-angle photons CCALT Inner Tracker QCALT D. Domenici

  16. Status of QCALT Old QCAL needs to be replaced • 2 Tile Calorimeters around the new QUADs • Dodecagonal-shaped structure (1m long) • 5 layer of Tungsten/Copper (3.5mm) + tiles (5mm) + WLS fiber (1mm) for a total of 5.5 X0(4.75cm thickness) • 20 cells/layer • 100 SiPM/module for a total of 2400 channels 2 times LY 10 times σz improvement Improved reconstruction efficiency 5x5cm2 ÷ 5x7.7cm2 tiles D. Domenici

  17. QCALT Prototypes • All the basic components have been tested • Tiles : BC404 (5 mm) • Fibre: St Gobain BCF92-mc • SiPM: MPPC 50 μm Layer Prototype L.Y./mip/tile = 25 p.e. σt/mip/tile = 750 ps 20 tiles for 2 prototypes Tower Prototype • Tests in progress: • Tile wrapping (reflective paint vstyvek) • Uniformity of tiles (10% at tb, CS) • Time stability test (LED UV, CS) • Massive SiPM test D. Domenici

  18. Status of QCALT SiPM-Fiber connection 1x2cm2 boards with preamp and Vbias regulator HV and Discriminator NIM boards Parts for Prototype ready Construction Schedule • Dec 2009: Module 0 • Feb 2010: TDR • May 2010: First completed FEE • Jun 2010: First completed readout board • Dec 2010: first 12 modules completed and tested • Jun 2011: second 12 modules completed and tested • Jun 2011: 23 completed FEE • Dec 2011: 23 completed readout boards Mechanical Support D. Domenici

  19. Status of CCALT Very useful for Ks rare decays Ks →γγ Ks →π0π0 2 small barrels of 24 crystals each with length 10-13 cm and transversal area from 1.5x1.5cm2 to 2x2cm2 w/o CCAL with CCAL Dodecagonal Barrel The angular acceptance is extended to 10° without interference with main EMC endcaps reconstruction Crystal 1.8-2.2 cm 10-13 cm D. Domenici

  20. CCALT Prototypes 100 MeV electrons Prototype built and tested at BTF • High light yield observed: 400-700 p.e./MeV • Position resolution 2.8mm @ 500 MeV • Time resolution 250-300 ps from 100 to 500 MeV • Energy resolution dominated by leakage at high energy Hamamatsu APD S8664-55 • Still to be done before freezing the design • Test of other cheaper crystals (SICCAS) • Design of final detector shape • Design of final Electronics • Design of support mechanics FIRST ST.GOBAIN LYSO Crystal 20x20x150 mm3 D. Domenici

  21. Status of IT • The R&D phase concluded has shown the feasibility of the project • In July the TDR has been delivered to our INFN-referees • The project has been approved by CSN1 • Funding for the entire construction tools and for 1 layer assigned (~200k€) IT Numbers • 5 tracking layers from 127 to 218 mm • σrφ = 200 µm and σZ = 500 µm spatial resolutions with XV strips-pads readout • 700 mm active length • 1.5% X0in the active region • Cylindrical-GEM detectors • R&D in the last year • Large-area GEM characterization • Final XV-readout characterization • Test in magnetic field • Mechanical test on Carbon-Fiber support D. Domenici

  22. Large-area GEM GAS GAIN STD GEM 70 50 Change of manufacturing process needed for large foils (up to ~1m long) G70-60 / Gstd = 0.80 NEW GEM 70 70 65 10 cm Simulated with Garfield 10 cm Tested on small foils D. Domenici

  23. Large area Planar Prototype Cathode PCB 70x30 cm2 Triple-GEM planar detector with Single-mask foils for quality and uniformity test GEM1 GEM2 GEM3 Gauge meters 1.5x2.5 cm2 pad readout PCB Load Cells Jaws D. Domenici

  24. XV Readout X pitch 650 µm V pitch 650 µm 1000 µm • Peculiar XV readout designed for the cylindrical geometry • X Strips for rφ coordinate • V Strips at 40° formed by Pads connected by internal vias • Crossing of X and V gives Z coordinate 40° Dedicated 10x10 cm2 planar chambers built to study the readout D. Domenici

  25. Test in Magnetic Field Ar/CO2=70/30 B=0.5 T Lorentz angle αL = 9° SPS H4 beam (π+150 GeV/c) GOLIATH Dipole (up to 1.5 T) 5 planar GEMs 8 mm 700 μm beam KLOE field FEE 704 channels equipped with GASTONE 16 GASTONE64 release ready for bench-test KLOE requirements fullfilled D. Domenici

  26. Mechanical Tests Built the full size “mechanical model” of the first layer of the IT including the FEE and the detector support (in CF). 3-D measurement & load test done. Buckling ~7.5 ton, well above the 100 kg load needed for GEM stretching. Radial deformations ~70µm @ 600 kg D. Domenici

  27. HV Connectors GASTONE Boards D. Domenici

  28. D. Domenici

  29. OGE (Off Gastone Electronics) • OGE Board Status • 4 boards produced • Hardware Interfaces ok • New release foreseen to correct minor errors on PCB • Possible Integration with QCALT and LET under study • Firmware almost completed • Windows OS Control software written • OGE L1 Board status • Same board for IT, QCALT and LET (in charge of RM3, work in progress) • Manages 8 Gastone Boards (128 ch each) • Gastone Interface (read/process input data) • DAQ Interface (decode L1 trigger/send to DAQ) • Slow control Interface (RS232, USB, ETHERNET and OPTICAL interf.) • Power Section D. Domenici

  30. Conclusions • Everything is ready for the roll-in of KLOE in DAFNE. We are confident that the new run of data-taking can start in the next March • The KLOE experience together with the recent results suggest that an integrated luminosity of 300-400 pb-1/month can be achieved • We believe that the proposed upgrades are very important to improve and enlarge the KLOE-2 physics program. The work is proceeding steadily. Our schedule foresees to be ready for end of 2011 if the entire project is funded by April 2010 D. Domenici

  31. SPARES D. Domenici

  32. Status of IR • The 4 doubles-dipoles for the compensation of the KLOE field have been delivered at LNF • The Be layer for the connection between KLOE-IR and beam-pipe has been ordered. Delivery expected in November • The whole Interaction Region will be assembled starting from December • Insertion of IR in KLOE scheduled for end of February (last task to be performed) D. Domenici

  33. IT Motivations Simulation results for a π track from KS → ππ KLOE measurement (σΔt = τs) KLOE-2 prevision (σΔt = 0.25 τs) 5 times more integrated luminosity nedeed without IT to get the same improvement of present error D. Domenici

  34. Test beam measurements Agreement between the simulated Lorentz Angle and the measurements KLOE field Spatial resolution decrease with Magnetic field intensity Efficiency is not affected by KLOE B-field D. Domenici

  35. IT Construction Schedule D. Domenici

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