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The primordial ’soup’ of QUARKS and GLUONS Can we make and study it on earth?. Our Hadron World: NOW. Quark-Gluon Plasma: OUR PAST. M. Turner Natl. Geog. Mag. J. Harris, Yale. Quark Gluon Plasma in Universe: t < 10 -6 sec.

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the primordial soup of quarks and gluons can we make and study it on earth
The primordial ’soup’ of QUARKS and GLUONSCan we make and study it on earth?

Our Hadron World: NOW

Quark-Gluon Plasma:

OUR PAST

M. Turner Natl. Geog. Mag.

J. Harris, Yale

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

Børge Svane Nielsen, NBI

searching for the quark gluon plasma ultra relativistic collisions
Searching for the Quark Gluon Plasma: Ultra Relativistic Collisions

URQMD

H. Stöcker et al

Børge Svane Nielsen, NBI

slide3

Do we form a Quark Gluon Plasma?

Børge Svane Nielsen, NBI

the traces of the little big bang
The traces of the Little Big Bang

E=Mc2

=>

’Create’ Matter & Antimatter

’New Math’

=>

200+200=7000

Børge Svane Nielsen, NBI

slide5

The basic building blocks of nature: the Standard Model

PARTICLES

FORCES

Børge Svane Nielsen, NBI

slide7

Baryon

Cannot make free quarks this way

=>

Need short distance, large density

QGP

Meson

Baryon

The STRONG force:

Quarks are confined

The quark-quark potential

2mqc2

2004 Nobel prize:

Theory of QCD

F. Wilczek

D. Gross

H. Politzer

Børge Svane Nielsen, NBI

the phases of nuclear matter
The PHASES of Nuclear Matter

Børge Svane Nielsen, NBI

slide10

BRAHMS

BrookhavenNatl Lab. New York, USA

Børge Svane Nielsen, NBI

brahms the forward experiment
BRAHMSThe forward experiment

Børge Svane Nielsen, NBI

nyt others scan
NYT + others scan

12. oktober 2007

Kulturnat Jens Jørgen Gaardhøje, Niels Bohr Institute

12

Børge Svane Nielsen, NBI

large hadron collider lhc cern gen ve 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.

Børge Svane Nielsen, NBI

slide15

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

Børge Svane Nielsen, NBI

slide22

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.

Børge Svane Nielsen, NBI

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

Børge Svane Nielsen, NBI

hehi and alice

The ALICE TPC laser and FMD detector

TPC laser

FMD

HEHI and ALICE

Børge Svane Nielsen, NBI

tpc laser calibration
TPC laser calibration

336 laser tracks in TPC

20-40 μJ/pulse,   1 mm

25 mm

266 nm, 100 mJ/pulse, 5 ns pulse,   25 mm

1.5 mm

Børge Svane Nielsen, NBI

optical components outside tpc volume
Optical componentsoutside TPC volume

Optics holders all designed and produced at NBI workshop

Børge Svane Nielsen, NBI

slide27

Installation at CERN

Børge Svane Nielsen, NBI

analysis of data from tpc commissioning
Analysis of data from TPC commissioning

Design side A

Measured 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

Børge Svane Nielsen, NBI

fmd si strip detector
FMD: Si strip detector

FMD3

FMD1

FMD2

3 inner rings: 20 φ sectors, 512 strips

2 outer rings: 40 φ sectors, 256 strips

Total 51,200 strips

Børge Svane Nielsen, NBI

silicon sensors and hybrids
Silicon sensors and hybrids

Sensors from Hamamatsu Photonics

Hybrids from Ideas AS, Oslo

VA-ALICE

128 channel

preamplifier

Wire bonds

Hybrid FEE

Børge Svane Nielsen, NBI

module production
Module production

Module gluing

in Copenhagen

Bonding

at CERN

Børge Svane Nielsen, NBI

test beam at astrid ring
Test beam at Astrid ring

Beam test with

5 complete modules

(equivalent to a full

inner half-ring)

Complete read-out

chain used

5 FMD modules

(5120 channels)

Digitizer board

680 MeV

e- beam

RCU board

Børge Svane Nielsen, NBI

assembly of fmd3 cone and fmd2 at nbi
Assembly of FMD3 cone and FMD2 at NBI

Børge Svane Nielsen, NBI

assembly of fmd3 cone and fmd2 at nbi1
Assembly of FMD3 cone and FMD2 at NBI

Børge Svane Nielsen, NBI

slide35

ALICE FMD rejsegilde

Invitation til reception

torsdag den 1. marts

kl 15:00 i Ma-14

i anledning af afslutningen på

konstruktionen af vores silicium

detector og dens snarlige afsendelse

til CERN

Jens Jørgen og Børge

Børge Svane Nielsen, NBI

moving to cern
Moving to CERN

Børge Svane Nielsen, NBI

installation of fmd3 in alice
Installation of FMD3 in ALICE

ALICE seen

from outside

and inside

Børge Svane Nielsen, NBI

installation of fmd3 in alice1
Installation of FMD3 in ALICE

FMD3 day =

Friday,

13. April 07

Børge Svane Nielsen, NBI

fmd in alice
FMD 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 ….

Børge Svane Nielsen, NBI

slide40

Let’s go visit

ALICE……

Børge Svane Nielsen, NBI