U.T. ArlingtonU.T. ArlingtonHigh Energy Physics High Energy Physics

ResearchResearch

U.T. ArlingtonU.T. ArlingtonHigh Energy Physics High Energy Physics

ResearchResearch

Summary of ActivitiesAugust 1, 2001

IntroductionIntroduction Experimental particle physics research at UTA

started in 1991 Professor Andrew White (hired 1991) Assoc. Professor Kaushik De (1993) Asst. Professor Andrew Brandt (1999) Asst. Professor Jae Yu (2001)

10,000 sq. ft. Swift Center detector lab – renovation funded by NSF+UTA

Research opportunities for students at world-class facilities: graduate: 8 (physics), 9 (engineering) undergraduate: 5

External grants: ~ $800k/year in 1998-99, 1999-00 > $4M total

DDØØ Experiment (Fermilab) Experiment (Fermilab)DDØØ Experiment (Fermilab) Experiment (Fermilab)

Intercryostat Detector (ICD)(Andrew White: Level 3 manager, project leader)

Forward Proton Detector (FPD)(Andrew Brandt: Level 3 manager, co-project leader)

PC/Linux Simulation “Farm”

Intercryostat Detector Intercryostat Detector (ICD)(ICD)

Intercryostat Detector Intercryostat Detector (ICD)(ICD)

The ICD enhances energy measurements in the DØ calorimeter 1998-2001: the detector was substantially redesigned for Run

II of the Tevatron (to function in the new magnetic field environment)

Detector is installed – commissioning studies underway

ICD tile array on the DØ south endcap calorimeter

ICD tile and optical fibersduring assembly

Forward Proton Detector Forward Proton Detector (FPD)(FPD)

Forward Proton Detector Forward Proton Detector (FPD)(FPD)

Schematic of the detector layout

Roman Pot installed in the Tevatron tunnel

This new detector measures the momenta of scattered protons & anti-protons to study “hard diffractive” physics processes

DDØØ Monte Carlo Farm Monte Carlo FarmDDØØ Monte Carlo Farm Monte Carlo Farm

UTA system: 24 dual processor Linux

PC’s 256 MB RAM/cpu 0.61 TB disk storage

Execution/monitoring software: Python language

UTA farm operates at the highest efficiency compared to all other production sites

To date (8/01/01) >3 million events generated

Second farm in CSE recently added

The UTA PC Linuxfarm at Swift Center

Physics AnalysisPhysics AnalysisPhysics AnalysisPhysics Analysis

D0 Run I: Contributed to many areas (hardware,

software, simulated data) directly supporting the publication of > 100 refereed papers – particular emphasis on new particle searches, tests of the strong nuclear force (QCD)

D0 Run II: Use the capabilities of the upgraded

detector to extend the reach of Run I analyses (new particles, QCD) – new topics include searches for the Higgs particle

Atlas Experiment (CERN)Atlas Experiment (CERN)Atlas Experiment (CERN)Atlas Experiment (CERN)

Intermediate Tile Calorimeter (ITC):(Kaushik De: Level 3 manager, project leader)

Module construction (Swift Center) PMT test bench

Grid computing testbed: Linux cluster (PC’s running Globus toolkit) Software development

University of Texas at Arlington Construct detector modules, assemble and

test scintillator extension, test phototubes, final module assembly and instrumentation work at ANL, installation at CERN

Michigan State University Provide scintillators and fibers, assemble and

test cryostat scintillators, installation at CERN Argonne National Laboratory

Provide steel plates Assemble completed modules and install

optics

ITC ResponsibilitiesITC ResponsibilitiesITC ResponsibilitiesITC Responsibilities

ITC SubmodulesITC SubmodulesITC SubmodulesITC Submodules

Completed modules are delivered to ANL and Barcelona for inclusion in the full module

assemblies:

Swift Center UTA module installed in full assembly at Argonne National Lab

Atlas Computing GridAtlas Computing Grid Atlas Computing GridAtlas Computing Grid

Computing “grids” are envisioned as the next revolution in the development of the internet

Atlas will employ a grid architecture to facilitate data access for collaborators spread around the world

The U.S. testbed has deployed a prototype grid –> five universities + three national labs (see figure)

UTA is working on software tools for status monitoring (w/CSE) and benchmarking

Calren Esnet, Abilene, Nton

Abilene

ESnet, Mren

UC BerkeleyLBNL-NERSC

ESnet

NPACI, Abilene

BrookhavenNationalLaboratory

Indiana University

Boston University

ArgonneNationalLaboratory

US ATLAS Data Grid Testbed

HPSS sites

U Michigan

University ofUniversity ofTexas atTexas atArlingtonArlington

University of Oklahoma

Grid Computing (cont.)Grid Computing (cont.)Grid Computing (cont.)Grid Computing (cont.)

UTA has developed ‘GridView’ to monitor the gatekeeper machine at each testbed site:

Screenshot from http://heppc1.uta.edu/kaushik/computing/grid-status/index.html

UTA Gatekeeper =>