The CERN-JINR Collaboration J. Engelen March 27, 2006

From (before) NA4 to the LHC Programme NA48/2 Also: NA48, NA48/1, NA48/2, NA48/3 HARP COMPASS DIRAC CERN - JINR Collaboration

Re(  ’  ) = (14.7  2.2)  Experiments NA48, NA48/1, NA48/2 CERN) LKr cryostat – first ISTC - CERN CP-violating parameter in K 0  2  decays + 23 t of Krypton -Russian Industry for CERN experiment E731 NA31 KTeV NA48 х Cusp Effect M(π 0 π 0 ), GeV/c 2 K ± -> π ± π 0 π 0 (a 0 -a 2 )m(π + ) = ± A g 0 = (1.8 ± 2.6)  A g 0 = (1.8 ± 2.6)  “Charged” mode K ±  3  ± “Neutral” mode K ±  0  0  ± New NA48/2 results on direct CP-violating charge asymmetry in K ±  3  slopes First Observation K S   0 e + e – K S   0 mm K S   0 γγ A g c =(1.7 ± 2.9)  10 -4

JINR The LHC Transverse Damping System The LHC Transverse Damping System CERN – Russia - JINR CMS LHCb LHC Damper ATLAS ALICE  Transverse Damping System  Transverse Damping System is a feedback with a real-time digital signal processing for: damping of transverse injection oscillations, feedback curing transverse coupled bunch instabilities, excitation of transverse oscillations for beam measurements and other applications.  The Damper is in the list of the systems that must operate already for first beam injection. Therefore the schedule of construction and installation of the Damper in the machine must be completed in 2006 and testing in the accelerator will start in November  JINR’s obligations: 20 deflectors (kickers) & 20 twin-amplifiers.

18 kicker tanks (9 modules) assembled waiting for bake-out by AT-VAC in hall 113 (March 22, 2006 ) The LHC Damper: kickers JINR CERN team between finished modules wishing to congratulate their JINR colleagues for their achievement After three weeks of hard work by the JINR team on visit at CERN 18 kicker tanks (9 modules) are finally finished

LHC Damper: future plans  During 2006 the following items must be completed:  series production of 15 wideband twin power amplifiers and their testing at the specialized test stands of LPP (JINR) and AB/RF (CERN)  assembly of two spare kicker tanks  vacuum bake-out of 20 kickers/deflectors at CERN by AT/VAC (April 2006)  transportation and installation of 4 units (=8 modules) in the LHC tunnel in July 2006 as well as hardware commissioning in November  Participation in beam commissioning in 2007 and in future electronics design is being discussed. JINR

The CMS Detector MUON BARREL Silicon Microstrips Pixels ECAL Scintillating PbWO4 crystals Cathode Strip Chambers Resistive Plate Chambers Drift Tube Chambers Resistive Plate Chambers SUPERCONDUCTING COIL IRON YOKE TRACKER MUON ENDCAPS Total weight : 12,500 t Overall diameter : 15 m Overall length : 21.6 m Magnetic field : 4 Tesla HCALPlastic scintillator/brass sandwich CALORIMETERS Spokesperson: M. Della Negra

CMS2JE Feb06 CMS Solenoid Magnet reached nominal operating temperature for the first time on 25 Feb. Cooldown took 24 days. Energize in May. Cool-down achieved by pumping helium gas at liquid nitrogen temperature (-196 o C) and then as liquid helium. Coil: 14.5t sc cable, 74t pure Al, 126t high strength Al max 15/23/225/2 min K

CMS2JE Feb06 CMS Endcaps Lower in September CSCs and RPCs on YE+1 RPCs on YE+2

Diameter25 m Barrel toroid length26 m End-cap end-wall chamber span46 m Overall weight 7000 Tons ATLAS (spokesperson Peter Jenni)

Barrel Toroid installation status The mechanical installation is complete, electrical and cryogenic connections are being made now, for a first in-situ cool-down and excitation test in spring 2006

Barrel Muon MDTs Installation of barrel muon station A major effort is spent in the preparation and testing of the barrel muon stations (MDTs and RPCs for the middle and outer stations) before their installation in-situ The electronics and alignment system fabrications for all MDTs are on schedule MDT Chamber Production (w/o EE) Jan-00Jan-01Jan-02Jan-03Jan-04Jan-05Jan-06Jan-07 Time No. Chambers Bare MDT Plan Bare MDT Integrated MDT Tested MDT Installed MDT Plan Installation

20/04/ th RRB J. Schukraft ALICE Detector TPC PHOS Muon arm TOF TRD HMPID PMD ITS ACCORDE Spokesperson J. Schukraft

ALICE Magnet field mapping

This very fruitful and successful collaboration has an excellent future, in particular with the LHC and the LHC experiments now very near to completion with start of operation in 2007 JINR