- Количество слайдов: 23
CDF perspectives and Computing needs KISTI, Dec 5 th 2008 Dong. Hee Kim
CONTENTS 1. CDF Korea Collaboration Status 2. Beam and data taking Status 3. Physics Issue 4. Computing needs 5. Other Mega experiments 6. Role of KISTI
The CDF Collaboration North America 34 institutions The CDF Collaboration 15 Countries 63 institutions 589 authors • Newly join last year: Slovakia, Madrid, Baylor join this year: U. of Athens Europe 20 institutions Asia 8 institutions Korea group, • KNU, SKKU, SNU, KISTI, Chonnam and Chonbuk - Totally 6 institutions • consist of 16 Ph. D and several Ph. D students
Tevatron Luminosity Delivery for Run II extrapolated from FY 09 8. 6 fb-1 FY 10 start 7. 2 fb-1 Highest Int. Lum Real data for FY 02 -FY 07 Lowest Int. Lum FY 09 and FY 10 FY 08 start integrated luminosities assumed to be identical
Tevatron Luminosity Modest Acc. Gains Significant improvements To Date 3. 2 fb-1 FY 08 4. 5 fb-1 5. 0 fb-1 FY 09 5. 8 fb-1 6. 8 fb-1 FY 10 7. 1 fb-1 8. 1 fb-1 • FY 08 will be the first year we will NOT double our luminosity • Trigger design already comfortably handling the instantaneous lum we expect • Effort will be to refine - a very different position than what we have had to do in the past…
Data collection ~3. 2 fb-1 delivered ~2. 7 fb-1 recorded ~85% recorded since 2003 ~80% of delivered lum goes into analyses • Luminosity records: – Highest initial inst. lum • Sources of inefficiency include: – Trigger dead time and readout ~ 5% • ~2. 92 e 32 – Integrated lum/week • Intentional - to maximize physics to tape • 45 pb-1 – Integrated lum/month • 165 pb-1 Great success also studies – Start and end of stores ~5% – Problems (detector, DAQ) ~5% Stable
Instantaneous Luminosity Good running most of year: • Doubled delivered and acquired luminosity! • New shift crew arrangements 6/06 -8/07 • ISL cooling leak Delivered – 330 pb-1 w/ east L 00+ISL off • First 6 months of 2007: – 144 pb-1/month delivered – 121 pb-1/month acquired – 115 pb-1/month w/SVX Luminosity Efficiency 1. 67 fb-1 Recorded 1. 39 fb-1 83% Good Run 1. 32 fb-1 79% Good (SVX) 1. 27 fb-1 76% Good (ISL/L 00) 1. 00 fb-1 60% • Accel. Performance down in April-June – Took some time after sextapole changes to get back to good operating point – Resumed high luminosity just before shutdown
CDF Physics Program
New Discoveries ? ? ?
New Physics ? ?
First Higgs Excluded by Tevatron !!!
Analysis Prospect Need Stable computing Resource !!
Computing needs KISTI is the best resource for CDF !!!
CDF Resource Usage - Total
Offsite Usage – USA & Asia Donatella clearly mentioned about KISTI in International Finance Committee Meeting on November ’ 08.
Current Collider Experiments • Tevatron – Fermilab – Currently plan to run 2010 data reduction till 2013 • Belle - Tristan – run to March 2009 and quit – Takes > 3 to 4 years for upgrading detector and accelerator if Super. Belle has been approved – Tough competition with LHCb experiment • LHC – CERN – At least 1 year delayed due to accident last september – Plan to start Aug 2009(Plan 1) or start early 2010(Plan 2) – Expect to take few years for Detector calibration etc. . Where is the most efficient place for computing contribution by KISTI for the next few years ?
CDF Korean group • CDF Korean group is the one of the biggest group – 6 institutions, 17 Ph. Ds and 8 graduate students – Three students in Fermilab performing data analysis – Desirable KISTI provision of computing for domestic and foreigner • CDF need more computings from KISTI for the next five years – PB data till 2010 and a factor of 4 more for Monte Carlo – CDF management is also expecting a big contribution from KISTI • KISTI itself to utilize the resource for international collaboration – CDF is stable for the next five years in terms of needs of computing – LHC is already been delayed – Super. Belle takes a time even though it will be approved • CDF is the best choice for the computing contribution. • close collaboration between KISTI and Korean group to maximize the international contribution for the next five years
Viable Collaborations • The collaborations should be viable through FY 2013 • To ensure collaborations are viable in FY 2013, we need to start working now to maximize the computing contribution by KISTI • Need projects for Korean CDF group in touch with KISTI • It makes large man power utilized for the KISTI tasks • To keep collaborations viable need KISTI support of CDF University groups for work at the Tevatron beyond 2013 Maximize efficiencies by collaborating between KISTI and CDF-Korean group !
Summary • For the next five years, TEVATRON experiments need the biggest resource of Computing • CDF – Korea group has large size of collaboration and KISTI is a member institution • KISTI resource can be utilized in maximum by contributing CGCC effort by CDF • More effective collaboration is needed between CDFKorea member and KISTI people by creating projects