dhiman chakrabortynicadd: particle physics & detector development 1 dhiman chakraborty niu...

Dhiman Chakraborty NICADD: Particle Physics & Detector Development

NICADD: Particle Physics & Detector

Development

Dhiman Chakraborty

NIU Federal Research Agenda Strategic Review Meeting

28 Nov, 2005

Particle Physics’ Particle Physics’ ObjectiveObjective The Standard Model

A description of PARTICLES that make up matter and the FORCES of interaction between them.

Open Questions1. How do particles acquire their masses?

2. Why do they come in multiple “flavor”s?

3. Do all forces unify at high energies?

4. Where’s all the antimatter?

5. What constitutes the “Dark Matter”?

6. How can we explain the “Dark Energy”?

7. Are there “extra” dimensions of space?

8. Undiscovered principles of nature?

We must probe nature at the TeV

What are the “fundamental” building blocks of nature, and how do they interact?

Particle Physics & Particle Physics & Detector Development Detector Development

GroupGroup

To establish, maintain, and expand a strong

program with world-class facilities, personnel,

and a conducive environment to carry out

frontline particle physics research in worldwide

collaboration (with special emphasis on nearby

national laboratories: Fermilab, Argonne).

Mission

GroupGroup

• Searches for new physics at Tevatron & ILC

• Full-cycle development of new generation of high-energy particle detector systems

– complete analysis of requirements

– selection of technology & geometry solutions through extensive simulation & laboratory tests

– construction, testing, deployment, & operation of prototype modules as well as full systems.

Current Interests

GroupGroup• Faculty: Blazey (group leader), Chakraborty,

Fortner, Hedin, (+ visiting faculty Maciel)• Scientists: Dychkant, Lima, Rykalin, Zutshi• Graduate Students:

– Degrees since 2002: Bagby(MS), Bandura(MS), Beznosko (MS), Eads (MS, PhD), Layton(MS), Verma(MS), Song (MS, PhD)

– Current: Arov (PhD), Francis (PhD), McIntosh (MS, PhD), Tran (MS, PhD), Uzunyan (PhD), Zatserklyaniy (PhD)

People

GroupGroup• DZero experiment (at Fermilab)

– Operations

– Data analysis

• International Linear Collider (Detector)– Event reconstruction algorithms

– Hadron calorimeter and muon tracker hardware

– Simulation software

• Scintillator extrusion (at Fermilab)– Shared facility for basic detector R & D (prototyping)

– Capable of full-scale production

Ongoing projects

DZero Project at DZero Project at FermilabFermilab

• 19 nations

• 82 institutions

• ~650 members

DØTevatron

World’s premier accelerator facility, running since 1989.

•21 yrs since inception

•15 yrs running

•~1M electronic channels

• operating at ~10 KHz

DZero project: DZero project: NICADD involvementNICADD involvement

Data analysisSearches for new physics

• Heavy top-antitop resonance (Jain/Chakraborty)*

• First generation leptoquarks (Fu/Zutshi)*

• Long-lived supersymmetric particles (Eads/Hedin)*

• Second generation leptoquarks (Song/Bhat)*

• Third generation leptoquarks (Zatserklyaniy, Uzunyan,/Maciel, Hedin)

• Charged Higgs bosons (Arov/Chakraborty)

DZero project: DZero project: NICADD involvementNICADD involvement

Operations• Blazey is serving his second two-year term as co-spokesperson

• Blazey, Chakraborty, Hedin, Zutshi, Maciel have led various detector, algorithms, physics groups

• Maciel, Lima are in charge of Level 2 muon trigger system

• Arov is a calorimeter “on-call” expert

Publications, presentations (since 2002)• 31 papers in top refereed journals

• 10 talks at international conferences

The International The International Linear Collider (ILC)Linear Collider (ILC)

•Electron-positron collisions at up to 1 TeV

•Crucial for precision measurements of new physics expected from the Large Hadron Collider (to start in2007)

•Adopted by community as the next project after LHC

•Already involves 1000+ scientists from ~100 institutions all over the world

•Total budget on the order of $10B

•Target start-of-operation: 2015

•Excellent chances of being sited close to Fermilab/NIU (site studies funded in part by NIU)

ILC Detector R&D @ ILC Detector R&D @ NICADDNICADD

•New algorithms for event reconstruction•Goal: ×2 improvement over current best in jet energy

resolution

•Detector design driven by algorithm performance

•Hadron calorimeter

•1.2m thick barrel can hold a schoolbus inside

•~40 layers of quarter-sized scintillating cells (~5M)

•Made possible by recent developments in silicon photodetectors

•Detector Simulation

•Both hardware and algorithm development depend crucially on realistic simulation

NIU is a key contributor to all of the above

ILC Detector R&D @ ILC Detector R&D @ NICADD: NICADD:

International International CollaborationCollaboration• Co-leading American Calorimetry (Chakraborty)

• CALICE Test Beam coordination (Zutshi)

• Working very closely with – Fermilab (all aspects),

– DESY & other European groups (HCal, TCMT),

– SLAC, ANL & other American groups (algorithm, sim)

• Hosted two international workshops

ILC Detector R&D @ ILC Detector R&D @ NICADDNICADDParticle-flow algorithms

New algorithms developed in collaboration (and in com-petition) with colleagues worldwide (US, Germany, Japan)

Cal only (old)

Digital PFA (new)

ZZ 4j events

Initial results are encouraging, but much effort still needed to attain lofty goal: v. high priority in community

ILC Detector R&D @ ILC Detector R&D @ NICADDNICADDHadron calorimeter (HCal)

•Proven technology (scint.)

•Careful evaluation of many options

•Prototype testing with cosmic rays

•Extensive characterization of SiPM for photodetectionSiPM for PET: collaboration w/ Gachon Med.

School?

ILC Detector R&D @ ILC Detector R&D @ NICADDNICADDTail-catcher/Muon-tracker for beam tests

•Need to estimate punch-through

•Prototype muon detector

•NIU’s contribution to CALICE collaborations’ test-beam module

•Beam test @ Fermilab/CERN: 2006-’09 •Sheets of 10 cm-wide home-home-

mademade scintillator strips laid side-to-side

•Sixteen 1m×1m, 0.5 cm thick layers alternating with steel plates

•Alternating x-y orientation

•Same read-out scheme as HCal

•First 2 layers completed,

•Being tested at DESY, Germany

ILC Detector R&D @ ILC Detector R&D @ NICADDNICADDDetector simulation•Developed several software packages for ILC full-detector and prototype module simulation

•energy deposition (LCDG4, SLIC, TBMokka),

•sensor response (DigiSim)

•Service to the entire ILC community

•code development, maintenance, user support

•data processing & hosting at users’ request

ILC Detector R&D @ ILC Detector R&D @ NICADD: NICADD:

Publications, talks, Publications, talks, preprintspreprints• 3 publications in major refereed journals

• 38 presentations at 16 international conferences and workshops since 2001

• 27 preprints (reports, proceedings)

For more details on ILC Detector R&D @ ILC Detector R&D @ NICADDNICADD

please visit http://nicadd.niu.edu/research

The NICADD/Fermilab The NICADD/Fermilab scintillator extrusion scintillator extrusion

facilityfacility•Financed by NICADD

•Hosted by Fermilab

•Operated jointly by NICADD & Fermilab personnel

POLYMERDRYER

CONVEYOR

POLYMER FEEDER

DOPANT FEEDER

EXTRUDER

MELT PUMP

POLYMERDRYER

CONVEYOR

POLYMER FEEDER

DOPANT FEEDER

EXTRUDER

MELT PUMP

The NICADD/Fermilab The NICADD/Fermilab scintillator extrusion scintillator extrusion

facilityfacility•Triangular strips for Minerva (R&D w/ CalTech, Wayne State)

•Rectangular strips for TCMT

•Test samples for HCal cells Thickness

4.79 4.81 4.83 4.85 4.87 4.89 4.91 4.93 4.95 4.97 4.99 5.01 5.03 5.05

4.98 +/- 0.03mm

SummarySummary• Motivated team of faculty, research scientists,

and students engaged in vigorous research at

premier current (DZero) & future (ILC) projects

• Good balance between variety & coherence

• Excellent student involvement at all levels

• Strong partnership with Fermilab (+ worldwide)

• Service contributions (ILC sim, extruder)

earned global trust, recognition as dependable

• Been attracting steady, strong federal funding

• Demonstrated vision, long-term sustainability

Future outlookFuture outlook• Continue current involvements

– returns on investment in DZero

– maintain momentum on ILC detector R&D

– make the most of the extruder facility

• Earn permanent status

• Expand, diversify into other areas– e.g. exciting possibilities in observational

cosmology (Fermilab warm to initial approach)

– need to attract top-notch staff and students

Backup slidesBackup slides

Particle Physics’ Particle Physics’ ObjectiveObjectiveWhat are the “fundamental”

building blocks of nature, and how do they interact?

The question only makes sense in the context of the tiniest distances, or, equivalently, the highest energies that we are able to access (E=h).

Today we, the particle physicists, are studying Nature’s structures and laws down to attometers, or, nano-nano-meters.

ILC Detector R&D @ ILC Detector R&D @ NICADDNICADD

Particle-flow algorithms

•Use superior track momentum measurement for best jet energy resolution

•Need finely segmented calorimeter for 3d imaging required to resolve nearby showers (to separate charged showers from neutral)

•Scintillator strips produced at FNSEF

•New photodetector thoroughly tested at NICADD

ILC Detector R&D @ ILC Detector R&D @ NICADDNICADDDetector simulation

•LCDG4 simulates the energy deposited in the detector volume by particles produced in high-energy collisions

•DigiSim simulates how our sensors respond to the energy deposition

dhiman chakrabortynicadd: particle physics & detector development 1 dhiman chakraborty niu...

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