The CERN-JINR Collaboration

J. EngelenMarch 27, 2006

From (before) NA4 to the LHC Programme

Also: NA48, NA48/1, NA48/2NA48/2, NA48/3 HARP COMPASS DIRACDIRAC

CERN - JINR Collaboration

Re(’) = (14.7 2.2) 10-4

Experiments NA48, NA48/1, NA48/2 (SPS @ CERN)

LKr cryostat – first ISTC - CERN CP-violating parameter in K0 2 decays

+ 23 t of Krypton-Russian Industry for CERN experiment

05

101520253035

1993 1993 1999 2001 2002 2003

E731

NA31KTeV

NA48

х 10-4

Cusp Effect

M(π0π0), GeV/c2

K ± -> π±π0π0

(a0-a2)m(π+) = 0.264 ± 0.015 AAgg

00 = (1.8 ± = (1.8 ± 2.6)2.6)1010-4-4

““Charged” mode Charged” mode KK±±33±±

““Neutral” mode KNeutral” mode K±±0000±±

New NA48/2 results on direct CP-violating charge

asymmetry in K±3 slopes

First Observation KS 0e +e –

KS 0KS 0γγ

AAggcc =(1.7 ± 2.9) =(1.7 ± 2.9)1010--

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JINR

The LHC Transverse Damping SystemThe LHC Transverse Damping SystemCERN – Russia - JINR

CMSCMS

LHCbLHCb

LHC DamperLHC Damper

ATLASATLASALICEALICE

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 2006.

JINR’s obligations:• 20 deflectors (kickers) & 20 twin-amplifiers.

18 kicker tanks (9 modules) assembledwaiting for bake-out by AT-VAC in hall 113

(March 22, 2006)

The LHC Damper: kickersThe LHC Damper: kickersJINR

CERN team between finished moduleswishing 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 plansLHC Damper: future plans During 2006 the following items During 2006 the following items

must be completed:must be completed:

series production of 15 wideband twin power amplifiers and their series production of 15 wideband twin power amplifiers and their testing at the specialized test stands of LPP (JINR) and AB/RF testing at the specialized test stands of LPP (JINR) and AB/RF (CERN)(CERN)

assembly of two spare kicker tanksassembly of two spare kicker tanks vacuum bake-out of 20 kickers/deflectors at CERN vacuum bake-out of 20 kickers/deflectors at CERN

by AT/VAC (April 2006)by AT/VAC (April 2006) transportation and installation of 4 units (=8 modules) in the LHC transportation and installation of 4 units (=8 modules) in the LHC

tunnel in July 2006 as well as hardware commissioning in tunnel in July 2006 as well as hardware commissioning in November 2006.November 2006.

Participation in beam commissioning in 2007 and in Participation in beam commissioning in 2007 and in future electronics design is being discussed.future electronics design is being discussed.

JINR

The CMS DetectorThe CMS Detector

MUON BARREL

Silicon MicrostripsPixels

ECAL Scintillating PbWO4 crystals

Cathode Strip Chambers Resistive Plate ChambersDrift Tube

Chambers Resistive Plate Chambers

SUPERCONDUCTINGCOIL

IRON YOKE

TRACKER

MUONENDCAPSTotal weight : 12,500 t

Overall diameter : 15 mOverall length : 21.6 mMagnetic field : 4 Tesla

HCAL Plastic scintillator/brasssandwich

CALORIMETERSSpokesperson: M. Della Negra

CMS2JE Feb06

CMS SolenoidMagnet 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 (-196oC) and then as liquid helium.

Coil: 14.5t sc cable, 74t pure Al, 126t high strength Al

300

210

120

0

max

15/23/2 25/2

min

K

CMS2JE Feb06

CMS Endcaps

Lower in September

CSCs and RPCs on YE+1RPCs on YE+2

Diameter 25 mBarrel toroid length 26 mEnd-cap end-wall chamber span46 mOverall weight 7000 Tons

ATLAS (spokesperson Peter Jenni)

Barrel Toroid installation statusThe 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 andtesting of the barrel muon stations (MDTs andRPCs for the middle and outer stations) beforetheir installation in-situ

The electronics and alignment system fabrications for all MDTs are on schedule

MDT Chamber Production (w/o EE)

0

200

400

600

800

1000

1200

Jan-00 Jan-01 Jan-02 Jan-03 Jan-04 Jan-05 Jan-06 Jan-07Time

No.

Cha

mbe

rs

Bare MDTPlan Bare MDTIntegrated MDTTested MDTInstalled MDTPlan Installation

20/04/2005 18th RRB J. Schukraft

ALICE ALICE DetectorDetector

TPCTPC

PHOSPHOS

Muon armMuon arm

TOFTOF

TRDTRDHMPIDHMPID

PMDPMD

ITSITS

ACCORDEACCORDE

Spokesperson J. Schukraft

ALICE Magnet field mappingALICE 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