TWiki> HEPProjects Web>FkwsGroup (revision 16)EditAttach

This page was thrown together quickly to provide some info about what fkw is doing these days. As an aside, the page with info on the UCSD written exam is here.

At this point, we are recruiting:

  • undergraduates
  • graduate students


This is where the focus is going now. Between 2007-2007, our focus was primarily on CMS computing, while doing physics only on CDF, where there was data. As we got closer to LHC data taking this has changed.

We work closely with Claudio Campagnari's group at UCSB, Avi Yagil's group at UCSD, and Lothar Bauerdick's group at FNAL.

During the first year (2010) of data taking with the LHC, our focus is on physics with dileptons. We have 6 analyses on the 2010 data, one of which (top cross section) has already been submitted for publication, 4 others were pre-approved in late 2010, and are expected to be submitted for publication in early 2011.

CMS Physics

All the students, researchers, and faculty are active in CMS physics to differing degrees. Our interests in CMS physics revolve around 2 or more leptons in the final state. Basically the same final states as we worked on in CDF, but with more of a thrust towards discovery than measuring Standard Model processes.

What we have done recently includes:

  • MET commissioning (CMS PAS)
  • WW to lnulnu (CMS PAS)
  • ttbar to lnulnujj (CMS publication)
  • same sign and opposite sign dilepton SUSY searches (three different CMS PAS)
  • new physics at large shat with dileptons (CMS PAS)

A "PAS" is a Public Analysis Summary. It's a peer reviewed online publication by the CMS experiment, a collaboration of 1500 or so physicists. An "Analysis Note" is an internal CMS document that is not peer reviewed.

The basic ideas is to focus on new physics searches with 2 or more leptons. The rational is that the LHC is the only time in my lifetime when I will see such a large increase in center of mass energy. The very nature of hadron colliders means that the LHC has somewhere around 4-6 orders of magnitude more cross section than the Tevatron at the "high energy frontier". Add to this a factor of two larger design luminosity, and it's a chance that I probably will never see again.

As a result, I do not want to waste the next 5 years on anything but searches for new physics !!!

CMS Computing

People active on CMS computing:

  • Bruce Thayre (undergraduate)
  • Warren Andrews (graduate)
  • Ian McNeil? (graduate)
  • James Letts (Researcher)
  • Terrence Martin (Computing Staff)
  • Sanjay Padhi (Researcher)
  • Haifeng Pi (Researcher)
  • Jeff Dost (Computing Staff)
  • Igor Sfiligoi (Computing Staff)
  • Frank Wuerthwein (faculty)

Publications on Computing by people in our group

  • CHEP 2009
    • Use of glide-ins in CMS for production and analysis (also CMS CR-2009/081)
    • A Grid Job Monitoring System
    • CREAM-CE: First experiences, results and requirements of the 4 LHC experiments
    • The commissioning of CMS sites: improving site reliability
    • Bringing the CMS Distributed Computing System into Scalable Operations
    • Pseudo-interactive monitoring in distributed computing
    • Flexible Session Management in a Distributed System
    • The condor scalability paper by Igor and Dan (need to find the name)
    • SVOPME: A Scalable Virtual Organization Privileges Management Environment
    • CDF software distribution on Grid using Parrot
    • CDF GlideinWMS? usage in Grid computing in High Energy Physics
  • The commissioning of CMS computing centres in the worldwide LHC comuting Grid (Nuclear Science Symposium Conference Record 2008, NSS '08 IEEE)
  • The commissioning of CMS computing centres in the WLCG Grid (ACAT 08, 043, XII Advanced Computing and Analysis Techniques in Physics Research 2008, Erice, Italy) (EGEE-08, Istanbul, Sept. 22-26, 2008)
  • Definition and Implementation of a SAML-XACML Profile for Authorization Interoperability across Grid Middleware in OSG and EGEE (Journal of Grid Computing)
  • Pilot Job Accounting and Auditing in Open Science Grid (IEEE Grid 2008
  • The pilot way to Grid resources using glideinWMS (CSIE 09)
  • Published paper on CMS distributed analysis can be found here.

Non-physics computing

Open Science Grid Computing

Our group is heavily involved in the Open Science Grid (OSG), a nationwide distributed computing effort aimed at providing Grid computing to the scietific community.

CMS heavily relies on OSG for its computing needs, so a lot of effort is shared between the two.

In this section we present only information that is OSG specific and may not have direct, short term use in CMS.

People active on OSG computing:

  • Jeffrey Dost (undergraduate)
  • Christopher Theissen (undergraduate)
  • Terrence Martin (Computing Staff)
  • Sanjay Padhi (Researcher)
  • Haifeng Pi (Researcher)
  • Igor Sfiligoi (Computing Staff)
  • Frank Wuerthwein (faculty)

People that contributed in the past:

  • Amir Eibagi (undergraduate)
  • Jose Antonio Coarasa Perez (Computing Staff)
  • Rami Vanguri (undergraduate)
  • Warren Andrews (graduate)

Roles in OSG:

  • Member of the Executive Team (Frank Wuerthwein)
  • Leader of the Scalability, Reliability and Usability Area (Igor Sfiligoi)

Major subtasks:

  • Running a glideinWMS factory for OSG (Igor Sfiligoi, Warren Andrews)
  • Scalability and reliability of the storage components (Haifeng Pi)
  • Development of monitoring tools (Jeffrey Dost)
  • Development of scalability tools (Igor Sfiligoi, Christopher Theissen, J.A.P. Coaras)

While OSG usually does not develop software, the OSG scalability etc. work required tools that were not readily available, so new tools have to be developped.

The tools are hosted on sourceforge at


  • Using Condor glideins for distributed testing of network-facing services (IWHGA2010 - Preprint)


Our group is also involved in the development of Grid Workload Management Systems (WMS).

The current R&D effort is oriented toward the development of CorralWMS, an integration of glideinWMS and Corral. The effort is a collaboration of UCSD, Fermilab and ISI.

People active on CorralWMS? :

  • Tim Kang (undergraduate)
  • Tony Myers (undergraduate)
  • Robert Chen (undergraduate
  • Alison McCrea? (undergraduate)
  • Ian McNeil? (graduate)
  • Igor Sfiligoi (Computing Staff)
  • Frank Wuerthwein (faculty)

People that contributed in the past:

  • Amir Eibagi (undergraduate)
  • Benjamin Christian Boynton (undergraduate)
  • Chris Murphy (graduate)
  • Jaehyeok Yoo (graduate)


Our group has developped, and is maintaining, a Javascript-based library for reading an plotting RRD databases.

The package is hosted on sourceforge at

It is currently being used in glideinWMS and CorralWMS? (see above).

People involved from our group:

  • Igor Sfiligoi (Computing Staff)
  • Frank Wuerthwein (Faculty)

Advanced Network and Distributed Storage Laboratory

See here for details.

  • Haifeng Pi (Researcher)
  • Igor Sfiligoi (Computing Staff)
  • Frank Wuerthwein (Faculty)

Physics with CDF

The people (formerly) active on CDF:

  • Rami Vanguri (former undergraduate, now graduate @ UPenn)
  • Shih-Chieh Hsu (former graduate student, now Chamberlain Fellowship to work on Atlas at Berkeley since May 2008)
  • Matt Norman (former graduate student, now computing infrastructure developer with CMS)
  • Elliot Lipeles (former post-doc, starting faculty job at UPenn on June 1st 2008)
  • Mark Neubauer (former post-doc. Faculty at UIUC since Fall 2007)
  • fkw (faculty)

Bottom line, the CDF effort is winding down. All that's left to do is finish off a couple analyses, and write papers for them.

Public CDF Results from UCSD

-- FkW - 2010/04/16 -- FkW - 4 March 2010

Edit | Attach | Print version | History: r119 | r18 < r17 < r16 < r15 | Backlinks | Raw View | Raw edit | More topic actions...
Topic revision: r16 - 2010/12/10 - 23:11:04 - FkW
This site is powered by the TWiki collaboration platformCopyright © by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding TWiki? Send feedback