The primordial ’soup’ of QUARKS and GLUONS Can we make and study it on earth?

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 1

The primordial ’soup’ of QUARKS and GLUONSCan we make and study it on earth?

The primordial ’soup’ of QUARKS and GLUONSCan we make and study it on earth?

M. Turner Natl. Geog. Mag.

J. Harris, Yale

Our Hadron World: NOW

Quark Gluon Plasma in Universe: t < 10-6 sec

Quark-Gluon Plasma:

OUR PAST

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 2

Searching for the Quark Gluon Plasma: Ultra Relativistic CollisionsSearching for the Quark Gluon Plasma: Ultra Relativistic Collisions

URQMD

H. Stöcker et al

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 3

Do we form a Quark Gluon Plasma?

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 4

The traces of the Little Big Bang

E=Mc2

=>

’Create’ Matter & Antimatte

r

’New Math’

=>

200+200=7000

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 5

The basic building blocks of nature: the Standard Model

PARTICLES FORCES

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 6

Quark ’Lego’. Explains present complex particles

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 7

2004 Nobel prize:

Theory of QCD

F. Wilczek

D. Gross

H. Politzer

The STRONG force:Quarks are confined

The quark-quark potential

2mqc2

Baryon

Baryon

Meson

Cannot make free quarks

this way

=>

Need short distance,

large density

QGP

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 8

The PHASES of Nuclear Matter

The PHASES of Nuclear Matter

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 9

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 10

Brookhaven Natl Lab. New York, USA

BRAHMS

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 11

BRAHMS

The forward experiment BRAHMS

The forward experiment

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 12

12. oktober 2007 Kulturnat Jens Jørgen Gaardhøje, Niels Bohr Institute 12

NYT + others scanNYT + others scan

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 13

Large Hadron Collider (LHC) CERN, Genève, CH.

Large Hadron Collider (LHC) CERN, Genève, CH.

Large Hardron Collider LHC : 27 km

will collide lead nuclei :

Pb + Pb at 2750 AGev+ 2750 AGeV

Maximum available energy for particle production in each collision:

1,114,000 GeV

(= 0,1 mJoule. Each nuclear collision equivalent to 1 mg hitting a wall at 50 km/hr)

But the energy is concentrated in a volume of less than 10 -45 m3 !

Highest ENERGY DENSITY

ever produced.

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 14

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 15

ALICE experiment at CERN’s new LHC accelerator will record up to 80 000 particle pr. collision.

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 16

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Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 22

Up to 80.000 particles produced in each collision in ALICE. 10.000 collisions per second, for 15.000.000 seconds each year.

=> Millions of GigaBytes to be stored and analyzed.

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 23

… ready to take first data from the summer 2008. A bientôt…

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 24

HEHI and ALICEHEHI and ALICEThe ALICE TPC laser and FMD detector

TPC laser

FMD

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 25

TPC laser calibrationTPC laser calibration

20-40 μJ/pulse, 1 mm

266 nm, 100 mJ/pulse, 5 ns pulse, 25 mm1.5 mm

336 laser tracks in TPC

25 mm

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 26

Optical componentsoutside TPC volumeOptical componentsoutside TPC volume

Optics holders all designed and produced at NBI workshop

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 27

Installation at CERNInstallation at CERN

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 28

Analysis of data from TPC commissioning

Analysis of data from TPC commissioning

Measured side A Design side A

we are starting offline analysis of the laser data to characterize the laser tracks and look at TPC distortions … and preparing to install two lasers and electronics in the ALICE experiment

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 29

FMD: Si strip detectorFMD: Si strip detectorFMD3FMD1 FMD2

3 inner rings: 20 φ sectors, 512 strips2 outer rings: 40 φ sectors, 256 strips Total 51,200 strips

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 30

Silicon sensors and hybridsSilicon sensors and hybridsSensors from Hamamatsu PhotonicsHybrids from Ideas AS, Oslo

Hybrid FEE

VA-ALICE128 channelpreamplifier

Wire bonds

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 31

Module productionModule production

Module gluingModule gluingin Copenhagenin Copenhagen

BondingBondingat CERNat CERN

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 32

Test beam at Astrid ringTest beam at Astrid ring

680 MeV e- beam

5 FMD modules(5120 channels)

Beam test withBeam test with5 complete 5 complete modulesmodules(equivalent to a full(equivalent to a fullinner half-ring)inner half-ring)

Complete read-outComplete read-outchain usedchain used

Digitizer board

RCU board

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 33

Assembly of FMD3 cone and FMD2 at NBI

Assembly of FMD3 cone and FMD2 at NBI

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 34

Assembly of FMD3 cone and FMD2 at NBI

Assembly of FMD3 cone and FMD2 at NBI

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 35

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 36

Moving to CERNMoving to CERN

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 37

Installation of FMD3 in ALICEInstallation of FMD3 in ALICE

ALICE seenfrom outside

and inside

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 38

Installation of FMD3 in ALICEInstallation of FMD3 in ALICE

FMD3 day =

Friday, Friday, 13. April 0713. April 07

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 39

FMD in ALICEFMD in ALICE

FMD3 installed and ready

FMD2 to be installed 24 June,FMD1 still to be constructed,… and still lots of cabling and testing before first beam next summer ….

Danish Teachers, CERN, 23 Oct 2007 Børge Svane Nielsen, NBI 40

Let’s go visit

ALICE ……