CMS
SPS EXPERIMENT
Critical mass in a “small” experiment (NA49)
3 components of an explosive mixture:
- - Experienced hardware team from nuclear physics environment- - Continuous influx of talented students- - Committed theory support group
Actions:
-- GRID-TOF stand-alone Hungarian subdetector Original design, production, installation, on-line DAQ, off-line software,analysis-- Specific RESEARCH AIMS: concentrate on pp/pA physics Motto: AA can be understood only relative to simpler systems-- In house EDUCATION CENTRE (thanks to H.G.Fischer) Every year 2 new students with a new hardware piece is added: centrality detector, (new/old) n-detector, veto-chambers, GAP TPC, np-trigger, Leadglass..
Reasonable HOME FUNDING in average 30 kCHF/year
GOOD BASE to start NA61/SHINE experiment
Artist’s view of NA49
GRID-TOF (Budawall)
1994
2000
GRID-TOF
REFORM
dE/dX
V-zero
n-det
Centrality det
n-Veto
Gap-TPC
The CRITICAL POINT’s puzzle is well characterized by the letter of leading theorists to the SPSLC Committee which was the highest scientific decision body of CERN at that time:
Water analogy for QGP phase transition
Zoltán FODOR(ELTE)
LHC
ALICE ALICE - A Large Ion Collider Experiment
ATLAS ATLAS
CMS CMS - The Compact Muon Solenoid
LHCB LHCb
LHCF LHCf-measurement of forward neutral particle production for cosmic ray research
TOTEM Total Cross Section, Elastic Scattering and Diffraction Dissociation at the LHC
SPS
CNGS1 (OPERA) An Appearance Experiment to Search for nu_mu --> nu_tau Oscillations in the CNGS Beam
CNGS2 (ICARUS) A search programme of explicit v-oscillations with the icarus detector...
NA58 (COMPASS) COmmon Muon and Proton Apparatus for Structure and Spectroscopy
NA61(SHINE) Study of Hadron Production in Hadron-Nucleus and Nucleus-Nucleus Collisions at the CERN SPS
NA62 Proposal to Measure the Rare Decay K+ -> pi+ nu nu at the Cern SPS
NA63 Electromagnetic Processes in strong Crystalline Fields
SPOKESPERSON: Marek GAZDZICKI
SPOKESPERSON: Gyoergy VESZTERGOMBI
GLIMOS: Zoltan FODOR (RUN coordinator)
Beam:
Approved: 21-FEB-07
Status: Data Taking
GREY BOOK NA61
Study of Hadron Production in Hadron-Nucleus and Nucleus-Nucleus Collisions at the CERN SPS
HIGH ENERGY EXPERIMENTS AT CERN in 2008
From this table one should notice the fact that in the huge CERN Laboratory exists only 12 officially acknowledged high energy physics experiments.
There is 6 planned experiments at LHC:ALICE, ATLAS, CMS, LHCb, LHCf and TOTEM
and an other 6 registered experiments at SPS:
CNGS1(OPERA), CNGS2(ICARUS), NA58(COMPASS), NA61(SHINE), NA62, NA63.
Hungary has relative large groups in CMS and ALICE, but they represent only a small minority amongst the few thousand participants.
In the small SHINE/NA61 experiment already 10 people represent a strong contingent,
but our role even more significantbecause this is the only experiment in CERN where Hungarians are occupying leading positions:
G Vesztergombi and M. Gazdzidki co-spokespersons at start,
responsible separately for the proton- and heavy ion physics, respectively.
Beyond these administrative posts it is more important that the position of RUN coordination is also in Hungarian hand. Z. Fodor (RMKI) is the Technical Coordinator,
who is the commander of the real experimental work on the floor, knowing all the technical and scientific details.
Detector development – engineering
The NA49 data acquisition rate was limited to 4 - 5 Hz with a duty factor of 25% (effective rate around 1 Hz) and that seriously limited the statistics that could be collected for all measurements, including
the high pT measurements.
With this upgrade we can achieve a readout rate in excess of 40 Hz.An additional factor of 2 will be gained by reducing the sampling frequency of drift electrons . An overall readout rate exceeding 80 Hz will be thus achieved. With the typical 25% duty factor of the SPS that will result in an effective rate in excess of 20 Hz. A total of 240 MB and 8 CD were produced.
In ALICE detector one finds similar TPC as in SHINE, which has about only 3 times more (500,000) pads, but using 500 DDL channels and 200 CPU units to collect the data. In case of the SHINE detector, however, one uses about 60 times smaller number (8) of DDL channels and 200 times less number of CPUs, i.e. the new SHINE-DAQ system capable to handle similar order of magnitude data volume by a SINGLE COMPUTER!!!
PCI-bus in„1” PC
ALICE Detector Data LinkUSED IN NA61/SHINE also
D-RORC
References
High-speed optical links produced in Hungary work at data acquisition systems at:
CERN ● INFN (Roma ● Torino ● Bologna ● Napoli ● Pisa) IPN (Orsay, Nantes) ● CEA (Paris) ● NIKHEF (Amsterdam) Max-Planck Institute (München) ● KFKI-RMKI (Budapest)
Stockholm University ● IFAE (Univ. of Barcelona) ● Univ. of Valencia Univ. of Lausanne ● TU München ● Bärgische Univ. Wuppertal
Johannes Gutenberg Universität ● Mancester University Univ. of Chicago ● Indiana University ● Caltech (Los Angeles)
● Argonne Nat. Lab. (Chicago) ● Los Alamos Nat. Lab. Fermilab (Batavia) ● Brookhaven Nat. Lab. (New Yersey)
IRAM (an observatory in the Pirennes) a space telescope in Hawaii ● etc.
ALL the 3 biggest TPC detectors in the world:
LHC ALICE, RHIC STAR , SPS SHINE
are using DDL produced in Hungary
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