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Explore the experimental areas, infrastructure, and beam characteristics at the PS East & SPS North Areas in CERN for testing detectors and conducting research.
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Test Beams for detector R&D at CERN The PS East Area The SPS North Area Irradiation facilities ie-FP7
The PS East Area ie-FP7
NORTH AREA: target F61N.MTV02 T8 AREA: Target ZT8.MTV02 T7 AREA: ZT7.MTV01 (sec.) Target ZT7.MTV03 IRRAD T7 AREA: F61S.BHZ02 (irrad.) TO T7 SEC Schematic view The PS East Area ie-FP7
Experimental Areas The PS East Area ie-FP7
Beam Characteristics The PS East Area ie-FP7
Infrastructure What is (could be) provided • Counting houses (barracks) with racks and network connections • Beam instrumentation: • Scintillator for beam intensity measurement • XDWC for beam profile measurement • Threshold Cherenkov counter for particle ID • Scanning table (XSCA) – shared with SPS North Area users • Magnets - see slides later What is not there! • Infrastructure for large detectors – size of areas • Cryogenics The PS East Area ie-FP7
The SPS North Area EHN1 EHN2 (COMPASS) ECN3 (NA48) BA80 (ps building) BA81 (ps building) TCC2 access TCC2 targets (underground) CCC ie-FP7
Introduction • The proton beam (400 GeV/c) from SPS is slowly extracted to the North Area at LSS2 • The extracted beam is transported in the TT20 tunnel • 11% slope to arrive into TCC2 – then horizontal ; ~10m underground • The primary proton beam is split in three parts directed towards to the North Area primary targets: T2, T4 and T6 The SPS North Area 11% slope ie-FP7
Introduction The SPS North Area Beams • The three proton beams are directed onto the primary targets: • T2 H2 and H4 beam lines • T4 H6, H8, and P0 beam lines • T6 M2 beam line and Experimental Areas: • ECN3: underground experimental hall, can receive the primary proton beam with high intensity in ECN3 • EHN1: surface experimental hall, can receive secondary beams and/or attenuated primary proton beams • EHN2: surface experimental hall, receives the secondary beams or intense muon beam The SPS North Area ie-FP7
Experimental Areas • 6.5 Km of beam lines • About 1000 equipment installed The SPS North Area NA49 CALICE/ILC GLAST, DREAM, AMS,… CMS ALICE CERF/SC-RP CRYSTALS/LHC Coll. TOTEM LHCb ATLAS ie-FP7
User statistics The SPS North Area ie-FP7
The EHN1 beams • The SPS North Area was originally designed to house long-lasting experiments • demands for high quality of beams: high intensity, high energy, high resolution • In the recent years most of the users are “tests” • in particular of LHC detectors with permanent or “semi-permanent” BIG installations • several users from astroparticle experiments • The test users have very different requirements from the big experiments: • scan the full energy range ; typically [10, 300] GeV/c • with sometimes increased precision (linearity) requirements • use beams of all particle types {electrons, pions, protons, muons} • with as good as possible separation and identification • and, sometimes request high (or very high) rates and all that during the few (or even one!) week(s) of their allocated time! Rapidly changing environment, quite demanding on beam conditions and tunes The SPS North Area ie-FP7
The EHN1 beams The SPS North Area ie-FP7
Production rates Hadron beams Electron beams The SPS North Area Particle production by 400 GeV/c protons on Be targets, H.W.Atherton et. al. ie-FP7
The momentum selection is done in the vertical plane Design Principle “downstream” V-BENDs (B3, B4) the main spectrometer of the beam momentum definition The SPS North Area “upstream” V-BENDs (B1, B2) between the primary target and the momentum acceptance collimator ie-FP7
Design Principle The SPS North Area View of the H8 and H6 beam lines in TT81 tunnel. ie-FP7
Infrastructure What is (could be) provided • Counting houses (barracks) with racks and network connections • Beam instrumentation: • Scintillator for beam intensity measurement • XDWC for beam profile measurement • Threshold Cherenkov counter for particle ID • CEDAR counter for particle ID • Electromagnetic calorimeter for particle ID • Spectrometer for beam momentum measurement • Scanning table (XSCA) • Magnets - see slides later • Cryogenics installation The SPS North Area ie-FP7
Experimental Areas • https://edms.cern.ch/cdd/plsql/c4w.no_login?jump=FOLDER&p1=83193 The SPS North Area ie-FP7
Experimental Areas • H6/H6A Area The SPS North Area ie-FP7
Experimental Areas • H8/H8B Area The SPS North Area ie-FP7
Irradiation Facilities • PS East Area : T7 line • Primary proton beam from PS • Up to 2-4 E11 protons / spill @ 24 GeV/c • SPS North Area: • CERF in H6 beam line : <1E8 ppp @120 GeV/c • CERF++ in H4 beam line: <1E11 ppp @ { 400 GeV/c} • Under construction • GIF • Presently “orphan” in West Area • Plans to move it to EHN1: H4 or H6 beam lines ie-FP7
GIF++ In EHN1 • H4/H4C The SPS North Area ie-FP7
Test beam magnets CERN-PH magnet stock (partly up-to-date): http://ph-dep-dt1.web.cern.ch/ph-dep-dt1/Organization/MM/Magnet-List-2007.pdf See also: http://doc.cern.ch/archive/electronic/cern/preprints/open/open-2004-003.pdf Presently installed test beam magnets: • PS east hall: • TPC-90 magnet (last used by HARP), solenoid diam. 90 cm, 224 cm long, 0.7 T (~1.3 T in pulsed mode). • EHN1, H2 beam line: • M1 magnet, superconducting, large dipole, 82 cm gap, 1.4 m diameter, Field 3T,used by CMS • MNP22A, C-shaped classical dipole, 50 cm gap, 1 m width, 1 m depth, 1.37 T (presently 0.7 T)
CMS H2 test beam magnet beam B field 3T Helmholtz magnet http://ieeexplore.ieee.org/iel5/20/22845/01060951.pdf?tp=&isnumber=&arnumber=1060951
Test beam magnets Presently installed test beam magnets: • EHN1, H4 beam line: • Goliath (last user NA57), large classical dipole, ~160*240*360 cm, 0.85 T field • EHN1, H8 beam line: • Superconducting dipole, diam. 1.6 m, ~4 m overall length, 1.56 T field at 5000A, used by ATLAS, contains a rail system for inserting detectors