The STAR Heavy Flavor Tracker and Intermediate Silicon Tracker An Introduction and Brief Review of the Technical Design and Physics Goals at Mid-rapidity Jim Thomas Lawrence Berkeley National Laboratory. The STAR Detector at RHIC. Participating Institutions for the HFT & IST.
and Intermediate Silicon Tracker
An Introduction and Brief Review of the Technical Design and Physics Goals at Mid-rapidity
Lawrence Berkeley National Laboratory
Argonne National Laboratory
Brookhaven National Laboratory*
IPHC, Strasbourg (R&D)*
Lawrence Berkeley National Laboratory*
Massachusetts Institute of Technology*
Ohio State University
UC Irvine (R&D)
UC Los Angeles
The Heavy Flavor Tracker
+ IST + SSD
to yield 10 mm space point resolution
The HFT: 2 layers of Si at mid rapidity
50-150 mDirect Topological Identification of Open Charm
Goal: Put a high precision detector near the IP to extend the TPC tracks to small radius
The STAR Inner Tracking Upgrade will identify daughters of the decay and do direct topological reconstruction of open charm hadrons.
No Mixed events, no random background subtraction.
Current quark: a bare quark whose mass is due to electroweak symmetry breaking
Constituent quark: a bare quark that has been dressed by fluctuations in the QCD sea
Signals early equilibration (teq 0.6 fm/c)Flow: Probing Thermalization of the Medium
V2 / nqScaling as a Function of (mT – m0)
STAR Preliminary work by Yan Lu
Does it work in the Charm Sector?
A strong test of the theory
Yuting Bai, QM 2006 for the STAR Collaboration
Theory from Wicks et al. nucl-th/0512076v2
Where is the contribution from Beauty?
The HFT is a thin detector using 50 m Si
to finesse the limitations imposed by MCS
The IST and SSD form the ingredients of an Inner Tracking Upgrade
~ 60 cmThe SSD – An Existing Si Detector
~ 36 cmThe IST – A New Detector Using Si Strips
~ 17 cmThe HFT – A New Detector with Active Pixels
~ 1 m
Summary of Si Detectors Inside the TPC
500 M Events is achievable with DAQ1000
A Three Layer Telescope with MimoSTAR II Chips.
A full system test from pixel to DAQ using an extension of one TPC sector trigger line.