CDF Overview Joseph Kroll Penn DOE Site Visit 8 – 9 August 2005

Context of this presentation Past 4 years CDF II has moved from construction & commissioning  maintaining & analyzing Penn CDF Group has made major contributions to CDF II & made a major investment in Run II The Tevatron is realizing its potential: Record luminosity (1.4 x ) last week > 1 fb -1 delivered to CDF & DØ Electron cooling demonstrated & and being used 4 – 8 fb -1 is feasible We are committed to capitalizing on our investment by getting the key physics out of Run II: This means continuing major contributions to operations and analysis

Hardware –COT, TOF, Calorimeter calibration electronics –Level 2 trigger upgrade –personnel devoted proposing, designing, constructing, installing, commissioning, maintaining above hardware Operations –management, trigger, COT tracking, Si alignment, calibrations Data analysis & Physics –Primary contributions to flagship analyses unique to Run II –top physics, B s mixing, SUSY searches –Primary authors of 1 st PRL (D cross-section) and 1 st high p T PRL (top cross-section from dileptons) Our Investment in Run II

Current Personnel Faculty: J. Kroll, N. Lockyer, E. Thomson, H. H. Williams Post-docs: A. Heijboer, A. Kraan, C. Neu, D. Whiteson Graduate Students: K. Hahn, A. Kovalev, T. Rodriguez Y. Tu, D. Usynin, S. Yu Staff: J. Heinrich, P. Keener, W. Kononenko, G. Mayers, M. N. Newcomer, R. Van Berg

Past Personnel Covered by this Proposal Post-docs: D. Ambrose – now at FNAL M. Jones – now an assistant professor at Purdue R. Oldeman – now a lecturer at Liverpool, UK A. Munar – now at Valencia I. Nakamura – now a staff scientist at KEK P. Wittich – now an assistant professor at Cornell Students: C. Chen – now a post-doc at Maryland (BaBar) S. Yu – recently graduated, entertaining several post-doc offers

Contributions to Run IIa: COT COT electronics –8 channel ASDQ chip (drift time & charge encoded in width) 6600 packaged chips tested marketed to other experiments –ASDQ Motherboards 1400 Boards total – each with 3 ASDQ chips (1260 required for chamber) –Repeater boards and Buffer boards –All electronics has performed very reliably less than 0.5% ??? dead channels thresholds lowered well below specs to maximize efficiency Operations –management –aging studies –maintenance COT critical to CDF II success. Maintained by small group Penn committed to continuing role here

Contributions to Run IIa: TOF Lead role in approval of this “beyond the baseline” project TOF electronics –7 custom printed circuit boards (quantity produced) HV base (500) 2 cable connector boards (500 each) preamp (500) deCAF (540) TOMAIN (60) TOAD (180) –460 PMT assemblies (Hamamatsu fine-mesh PMT with base, tested) Operations –management –pager duties –calibrations –simulation Very tight production timescale: Never the less all operating reliably (~1 failure from this list per year) Continue commitment to maintain Exploit for physics analysis 32K contributed from UPenn

Contributions to Run IIb Trigger Level 2 decision crate upgrade – see talk –responsible for back-end of system including trigger decision –initial leadership from Peter Wittich –Daniel Whiteson (PD) & Kristian Hahn (GS) drove back-end effort help from Paul Keener (staff) here –Chris Neu (PD) shared responsibility for reCES part of system required splitting optical signals using active splitters –Replaced alpha based Run IIa system in April 2005 –Duplicate system runs parasitically  allows real time development without using beam time –participating in routine operation (pager responsibilities) –anticipate getting Yanjun Tu (GS) involved here 20K contributed from UPenn

Contributions to Detector Operations N. Lockyer: co-head of operations dept. Jun. `99 to Dec. `01 N. Lockyer: co-spokesperson Jun. ’02 to Jun. `04 J. Kroll: TOF co-subproject leader (SPL) Jan. `99 to Dec. `00 M. Jones: TOF SPL Jan. `01 to present –also one 6 month term as operations manager Jul.`02 to Jan.`03 D. Ambrose: COT SPL Jan. `01 to present –also two 6 month terms as operations manager Aug.`01 to Jul.`02 P. Wittich: Trigger SPL Aug.`02 to May `04 –prior to that trigger software coordinator from Jun.`02 A. Heijboer: Silicon alignment Oct. `04 to present A. Kraan: Calibration coordination Mar. `05 to present

Contributions to Operations Trigger system –P. Wittich L2 software coordinator & wrote lots of L2 software –monitoring and improvements (Oldeman, Wittich) On-line beam profile monitoring with SVT – see talk –Chris Neu working with Luciano Ristori (then CDF co-spokesperson) Silicon alignment – see talk –Aart Heijboer took over from Ray Culbertson (FNAL) in Fall 2004 Calibration coordination – see talk –Aafke Kraan: new role, crucial for timely data production Calorimeter calibration electronics –this responsibility now in the hands of FNAL

Leadership in Physics N. Lockyer: co-spokesperson – 2002 to 2004 E. Thomson: co-convener top group – 2004 to present J. Kroll: –co-leader B 0 and B s mixing effort – 2004 to present –co-leader 2003 Tevatron Higgs Sensitivity Study for R. Orbach M. Jones: co-convener B reco/tag subgroup – 2002 to 2004 R. Oldeman: co-convener B hadronic subgroup – 2002 to 2004 Daniel Whiteson: top MC coordinator – 2004 to present Peter Wittich: co-convener SUSY subgroup – 2004 to present Joel Heinrich: member CDF statistics committee

Physics Highlights top properties –major leadership role –cross-section using kinematics –mass using matrix el. method –W Helicity SUSY –major leadership role –dilepton searches –search for sbottom Electroweak –WW production Higgs search –Higgs Sensitivity Study –Wbb 1 st signal in track trigger data trigger improvements D cross-sections B s flavor oscillations –major leadership role –flavor tagging –lifetime resolution studies B fragmentation studies –crucial for flavor tagging too  b BFs More details in presentations that follow Heavy flavors (b & c)High p T physics

Publications Primary authors or major contributors to the following: First PRL from Run IIFirst high p T PRL

Results Approved for Public Presentation Higgs Sensitivity Study (joint CDF & DØ result) –L. Babukhadia et al., FERMILAB-PUB E Top mass using matrix element approach –dileptons and lepton + jet top samples Search for R Parity Violating Sneutrino Decay –publication in preparation Limits on sbottom production 1 st limit on B s flavor oscillations from CDF II –includes results on B hadron flavor identification Measurement of  b Semileptonic branching fraction –publication in preparation Primary authors or major contributors to the following:

Summary I will reemphasize our goals for the next funding period –physics top B_s mixing SUSY searches –continued involvement in operations COT TOF L2 Calibrations Si alignment Beam width monitoring whatever else the experiment needs that we can provide