V. Vrba-Detectors in Particle Physics Experiments (From ATLAS to ELI)

.

Detectors

in Particle Physics Experiments(from ATLAS to ELI)

ELI Workshop, Prague, April 27, 2010 1 Václav Vrba

Outline

ELI Workshop, Prague, April 27, 2010 Václav Vrba2

Semiconductor device as charged particle sensor – strip and pixels

LHC - main characteristics

Requirements on detectors operating at LHC

Pixel Detektor of ATLAS Czech participation

First data from ATLAS

Conclusions

..

Diode Segmentation - from Strips to Pixels


~ 2000

CERN / ATLAS

3k x 50 µm x 400 µm

CERN : micro-strips ~ 1981

ION-IMPLANTED, 100 µm PITCH

COLLABORATION: ENERTEC+KEMMER

~ 1965 PHILIPS

100 x 1370 µm x 1370 µm

Large Hadron Collider – LHC

@ CERN


LHC



LHC tunnel


An Aerial View of Point-1

(Across the street from the CERN main entrance)

LHC


LHC Parameters


Quantity number

Circumference

Dipole operating temperature

Number of magnets

Number of main dipoles

Number of main quadrupoles

Number of RF cavities

Nominal energy, protons

Nominal energy, ions

Peak magnetic dipole field

Min. distance between bunches

Design luminosity

No. of bunches per proton beam

No. of protons per bunch (at start)

Number of turns per second

Number of collisions per second

26 659 m

1.9 K (-271.3ºC)

9593

1232

392

8 per beam

7 TeV

2.76 TeV/u (*)

8.33 T

~7 m

1034 cm–2 s–1

2808

1.1 x 1011

11 245

600 millions

Energy of the beam in the accelerator tube =

1011 (number of protons in a bunch)

x 2808 ( number of bunches in the beam)

x 7 TeV (energy of a proton)

kinetic energy of a 400t train traveling at

velocity 150km/h. (e.g. TGV)

every 25 nsec. ~ 20 pp collisions generating

of about 2000 charged tracks

Requirements on detectors


fast – signal registration in 25 ns

high granularity – ability of pattern recognition of more than 1000 tracks generated in

the bunch-crossing

radiation hard – doses up to 1 MGy (100 Mrad) in 10 years of LHC operation

reliable – access usually in 2-3 years (or more) and for only very limited time

Electronics

Sensors

Electrical and mechanical interconnection – bump bonding, low mass cables, etc.

Low mass, radiation resistant and rigid mechanical construction, cooling, etc.

Critical components:


•z části•ve FZÚ

Response of different ATLAS sub-detectors

on particle passage•6

m

Czech

Participation


ATLAS Detector

SCT



PS2S150E Automatic Probe Station

Si strip sensor testing @ FZU


Silicon detector lab @ FZU


Silicon Tracker (SCT) v CERN

All four barrel cylinders are complete and at CERN, the integration into

the barrel thermal enclosure has been completed

Outermost ATLAS SCT barrel cylinder before insertion into the thermal enclosure

TileCal


TILECAL construction(IP ASCR, CU Prague)

• TILE Hadronic calorimeter

• Produced in 8 laboratories,Czech contribution to the submodule production 1999 – 2003

– 3 000 tons of rolled steel delivered from CR for the whole calorimeter

– 309 submodules (1/4 of TILE barrel) constructed

– Few tons of anticorrosive black paint DISKOR

lightmixer production 1999 - 2001– 10 000 light mixers,

800 special pieces produced

HV and LV power supply system 2000 - 2007

– HV power supplies, 256 channels, 16 units, designed and produced

– LV power supply system for the TILE, substantial contribution to design and production



Tile Calorimeter assembly workshop @ FZU

ELI Workshop, Prague, April 27, 2010

Transport do CERN

22 Václav Vrba

ATLAS TileCal @ CERN


Underground experimental ATLAS hall


ATLAS took

delivery of

Experimental

Cavern in

June-03

ATLAS – start of the underground

installation


depth

100 m

Hadron calorimeter in the ATLAS pit


ATLAS pixel detector



Pixel sensors testing at Prague (IP ASCR)

Sensor produced at

ON Semiconductor ,

Czech Rep.

•2nd pre-production•1st pre-production

•Significant improvement of the leakage current due to the modified temperature profile!

I-V CHARACTERISTICS

•Source: Vaclav Vrba et al, Institute of Sciences, Academy of Sciences, Czech Republic



Irradiation at CERN - responsibile P. Šícho

•Read-out Chip

•Modules


ATLAS pixel detection module


Completed Pixel disk

with 2.2 M channels

Completed barrel

stave

@ LNBL

@ Genova&Marseille

Assembly of staves and forward disks

Assembly of Pixel Detector layers @ CERN



Inner Detector services (cables and pipes)

installation in the inner bore of the barrel cryostat

(huge work completed after many months)

Petr Šícho

- koordinátor instalace servisních zařízení Pixelového detektoru


B-Physics layer insertion

Insertion of Pixel Detector into ATLAS- strong Czech participation


http://www.uslhc.us/Images/ATLAS_Images

http://www.olivier-art.com/AtlasBook/… order from Amazon

http://atlas.ch//atlas_brochures_pdf/brochure2eng.pdf

http://public.web.cern.ch/Public/en/Research/Research-en.html


ATLAS Supplier Award

to ON Semiconductor

ATLAS closing

and in September 2008 ready for data taking


LHC – first attempt, September 2008


LHC


the LHC is back

- November 2009

41

ELI Workshop, Prague, April 27, 2010 Václav Vrba

First collision registered byATLAS


K0s event display


ELI Workshop, Prague, April 27, 2010 44Václav Vrba

V0’s seen in the ATLAS Si tracker

pp anything + W μν


pp anything + W eν


pp 2 jets


Conclusions


Participation in CERN projects significantly facilitated the integration of the

Czech basic research in particle physics in the international research

structures in the field.

The Czech team significantly contributed to the design and construction of

important ATLAS sub-detectors , some key components have been delivered

by the Czech industry. ATLAS has been successfully launched and started to

deliver data.

Expertise acquired in more than decade of ATLAS detector construction can

be used in ELI experiments instrumentation.

Thank you for attention


Děkuji


LHC


Děkuji


ATLAS SCT Detector



System tests at CERN – barrel segment


Disk s w31 a w32


SCT LV0/4 channels: 6U EURO card with depth 280mmAssembly: Automatic line - 1325 components, Soldering by hand 152 components

Producer: TTC Telekomunikace, Prague

Design: Ing. Jan Šťastný, FZÚ AS CR


LV2 pro VME rám


SCT LV / HV crate


B-Physics layer insertion

•Pixelový modul


•Collisions

ELI Workshop, Prague, April 27, 2010 64Václav Vrba


ATLAS pixel detection module

Jiří Popule, Michal Tomášek

V0’s in the ATLAS Si tracker


V. Vrba-Detectors in Particle Physics Experiments (From ATLAS to ELI)

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