upgrade of hades and electromagnetic calorimeter
DESCRIPTION
Upgrade of HADES and Electromagnetic Calorimeter. HADES upgrade – activities of Rez group Development of electromagnetic calorimeter for HADES experiments at SIS100. P. Tlustý NPI Ř e ž group, Czech Republic for the HADES Collaboration. CENAP board, January 15, 2010. - PowerPoint PPT PresentationTRANSCRIPT
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Upgrade of HADES and Electromagnetic Calorimeter
CENAP board, January 15, 2010
P. TlustýNPI Řež group, Czech Republicfor the HADES Collaboration
• HADES upgrade – activities of Rez group
• Development of electromagnetic calorimeter for
HADES experiments at SIS100
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Jerzy Pietraszko, HADES Collaboration meeting, GSI, 01 - 05.07.2008
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Hades upgrade projects - summary
List of projects EU-FP6 Construction Contract
RPC - Resistive Plate Chamber Time res. 50-80ps Granularity needed for heavy systems (Au+Au)
Forward Wall range 0.2 – 7 degrees, reaction plane determination
DAQ-Upgrade (CPUs, Event Builder, VME crates, MUv2) goal 20kHz for Au+Au LVL1
BMBF (Bundesministerium für Bildung und Forschung) MDC Readout / Trigger (Frankfurt) RICH Readout / Trigger (München) LVL2 Compute Node (Gießen) Pion Hodoscopes (Gießen) Rebuilding of the 1st MDC layer, 6 chambers (Rossendorf)
In 2010: HADES ready for heavy system experiments
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TOF wall covers 850 >>450:
6 * 64 scint. Installed TOF=(tleft+tright)/2 t : 90 – 140 ps dE/dx measurementTracking x=vg*(tleft-tright)+xright
Time Of Flight detector (NPI Řež contribution)
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Time of Flight detectorTime of Flight detector
TOF channels
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TOF DAQ systemTOF DAQ system
ADDON module (LED) TRB board (128 ch TDC)
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TOF ADDON cosmic testTOF ADDON cosmic test
• Signals from PMT splited to ADDON and standard CFD, TDC and ADC
• Time walk of LED in ADDON is clearly visible
• For constant amplitude time resolution (now without time walk correction, just one TOT slice) is ~ 140 ps (sigma)
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Upgrade of TOF DAQUpgrade of TOF DAQ
Already done• tests of new ADDON modules in comparison with old
electronics• Recabling of 768 channels• Ready 2 TOF-ADDON+TRB sets
(2x128 channels)• Test of two sector setup – cosmic done
To be done• Installation of remaing ADDON+TRB modules sets in
February• Test before the beam time
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EMC - MotivationEMC - Motivation
- measurements of the respective º and η meson two gamma decay yields together with the dielectron data for the knowledge of dielectron coctail and normalization at incident heavy ion energies 2-8 AGeV
- better electron/pion suppression for large momenta (p>400 MeV/c) as compared to the present situation (at lower momenta the electron/hadron identification will be provided by the RICH and RPC)
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EMC - MotivationEMC - Motivation
Eur. Phys. J. C 4, 231-247 (1998)
Eur. Phys. J. C 4, 249-257 (1998)
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Side View
START
HADES & EMC
RPC
EMC
The total area required for a HADES calorimeter amounts to about 8m2 !!
ElectroMagnetic Calorimeter (EMC) will replace the HADES Pre-Shower detector (18º< Θ< 45º).
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Detector modules Our proposal is to use lead glass modules from OPAL end cap calorimeter.~ 900 modules needed, at present (April 2009) 1080 modules moved to GSI.
Energy resolution ~ 5%/sqrt(E), E in GeV
Lead glass properties:- type: CEREN 25- chemical composition (SiO2 -39%,PbO – 55%, K2 - 2%, Na20 – 3%) - density: 4.o6 g/cm3- radiation length (X0): 2.51 cm- refractive index: 1.708 (at 400 nm)
Nucl. Instr. Meth. A290, 76 (1990)
Module dimensions:42 x 9 x 9 cm
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Design • Number of modules 150x6=900
• Mass of one module of lead-glass 14 kg
• Total mass of cal. 12600 kg
E. Lisowski, TU Krakow
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Detector modulesDetector modules
number lightguide, wrapping
glass wrapping PMT
1 lead glass, mylar mylar EMI9903KB
2 lead glass, paper paper EMI9903KB
3 NO mylar EMI9903KB
4 NO paper EMI9903KB
5 NO mylar HAMAMATSU1949
EMI9903KB: 1.5” tube from MIRAC (WA98)
H1949: 2.5” tube from HADES Tofino
Lead glass dimensions: 9.2 x 9.2 x 42 cm
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Photon Beam Setup @ MAMIPhoton Beam Setup @ MAMI
Left up: test setup
Left down: crew
Right: detail with detectors,
movable table and beam halo
(looking in beam direction)
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Measured Measured spectra spectra ALL E= 1399MeV E= 1210MeV
E= 1021MeV E= 831MeV E= 676MeV
E= 261MeV E= 452MeV E= 72.1MeV
Ee=1508 MeV, energy spread <= 1%, det. module No.1
ADC channel
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Resolution vs. EnergyResolution vs. Energy Ee= 855 MeV
resolution ~ k . 1/sqrt(E)
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Summary
motivation: improved dilepton spectroscopy by HADES lepton and photon pairs at the same time
current status detector modules available
PMT – 70% available test with photons done, resolution measured tests with cosmics going on mechanical construction designed plans
fixing the detector module setup building one sector building full calorimeter
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Talks:
47th International Winter Meeting on Nuclear Physics, Bormio, Italy, 26-30 Jan 2009.P.Tlusty: Charged pion production in C+C and Ar+KCl collisions measured with HADESe-Print: arXiv:0906.2309 [nucl-ex] 21st International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (Quark Matter 2009), Knoxville, USA, 30th to April 4th, 2009F.Křížek: Inclusive Dielectron Production in Ar+KCl Collisions at 1.76 AGeV studied with HADES..XIII International Conference on Hadron Spectroscopy (Hadron2009), Tallahassee, USA, November 29 - December 4, 2009A.Kugler: Studying hadron properties in baryonic matter (HADES@GSI and HADES@FAIR)
HADES XX Coll.meeting, Sesimbra, 5-10 května 2009A. Kugler: TOF+FWP. Tlustý: Calorimeter for HADES at SIS100-plans and current status F. Křížek: Dilepton production in Ar+KCl @ 1.75AGeV
Publications:
A/ journals
Inclusive Dielectron Production in Ar+KCl Collisions at 1.76 AGeV studied with HADES.By HADES Collaboration (Filip Krizek for the collaboration). Jul 2009. 4pp. Published in Nucl.Phys.A830:483C-486C,2009. e-Print: arXiv:0907.3690 [nucl-ex] Phi decay: A Relevant source for K- production at SIS energies?HADES Collaboration (G. Agakishiev et al.), 12 pp., Published in Phys.Rev.C80:025209,2009. e-Print: arXiv:0902.3487 [nucl-ex]The High-Acceptance Dielectron Spectrometer HADES.By HADES Collaboration (G. Agakishiev et al.). 70pp. Published in Eur.Phys.J.A41:243-277,2009. e-Print: arXiv:0902.3478 [nucl-ex] Measurement of charged pions in C-12 + C-12 collisions at 1A-eV and 2A-GeV with HADES.By HADES Collaboration (G. Agakishiev et al.). Feb 2009. 15pp. Published in Eur.Phys.J.A40:45-59,2009. e-Print: arXiv:0902.4377 [nucl-ex]
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Deep sub-threshold Xi- production in Ar+KCl reactions at 1.76A-GeV. By HADES collaboration (G. Agakishiev et al.). Jul 2009. (Received Sep 25, 2009). 4pp. Published in Phys.Rev.Lett.103:132301,2009. e-Print: arXiv:0907.3582 [nucl-ex] In-beam measurements of the HADES-TOF RPC wall.A. Blanco..,Y.Sobolev… et al. 2009. 5pp. Published in Nucl.Instrum.Meth.A602:691-695,2009. New strangeness results from HADES L. Fabbietti et al. (HADES coll.)J. Phys. G: Nucl. Part. Phys. 36 064005 By HADES collaboration (I. Frohlich et al.).. 10pp. Published in Int.J.Mod.Phys.A24:317-326,2009. e-Print: arXiv:0809.2764 [nucl-ex] Dielectron production in Ar + KCl at 1.756-A-GeV with HADES.By HADES Collaboration (Filip Krizek for the collaboration). 4pp. Published in Int.J.Mod.Phys.A24:603-606,2009. Measurement of low-mass e+ e- pair production in 1-A-GeV and 2-A-GeV C-C collision with HADES.By HADES Collaboration (M. Sudol et al.).. 4pp. Published in Eur.Phys.J.C62:81-84,2009.
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B/ Proceedings Future perspectives at SIS-100 with HADES-at-FAIR.By HADES Collaboration (I. Frohlich et al.). Jun 2009. 7pp. Invited talk at 47th International Winter Meeting on Nuclear Physics, Bormio, Italy, 26-30 Jan 2009. e-Print: arXiv:0906.0091 [nucl-ex] Dielectron production in pp and dp collisions at 1.25-GeV/u with HADES.By HADES Collaboration (K. Lapidus et al.). Apr 2009. 6pp. Talk given at 19th International Baldin Seminar on High Energy Physics Problems: Relativistic Nuclear Physics and Quantum Chromodynamics (ISHEPP 2008), Dubna, Russia, 29 Sep - 4 Oct 2008. e-Print: arXiv:0904.1128 [nucl-ex] Study of the pp ---> np pi+ reaction at 1.25-GeV with HADES.By HADES Collaboration (T. Liu et al.). Sep 2009. 7pp. Contributed to 12th International Conference on Nuclear Reaction Mechanisms, Varenna, Villa Monastero, Italy, 15-19 Jun 2009. e-Print: arXiv:0909.3399 [nucl-ex]