Jin Huang Brookhaven National Lab Motivation PHENIX STAR eRHIC
Detectors ACKNOWLEDGEMENTS PHENIX Collaboration STAR Collaboration
BNL EIC Task Force BNL CA-D department 23 RD C ONFERENCE ON A
PPLICATION OF A CCELERATORS IN R ESEARCH AND I NDUSTRY Slide 2
Relativistic Heavy Ion Collider (RHIC) The most versatile hadron
collider in the world, and worlds first and only spin-polarized
proton collider Two running experiments as of today Pioneering High
Energy Nuclear Interaction eXperiment (PHENIX) Solenoidal Tracker
At RHIC (STAR) Recent Heavy Flavor Tracker upgrade, see talk
NP08/322 J. Schambach 2017-2025: RHIC with upgraded capability
Comprehensive upgrade of PHENIX detector by reusing the BaBar
Solenoidal magnet: sPHENIX and fsPHENIX Central detector upgrade,
see talk NP08/356, A. Franz STAR plans a series of detector upgrade
in the forward-looking direction 2025+: BNL envisions of a high
luminosity spin-polarized electron ion collider (EIC), eRHIC Three
studies of possible detectors for eRHIC Continue upgrade paths for
PHENIX and STAR lead to EIC detectors A purpose-built detector to
fully optimize for EIC physics CAARI 2014 Jin Huang 2 Strong
interest in EIC in the nuclear physics community also shown in next
talk, an EIC envisioned by Jefferson Lab: NP08/433, P. Turonski
Slide 3 Slide 4 Search for QCD critical point and onset of
deconfinement STAR detector with upgraded TPC is well suited for
this study Detailed study using strongly interacting Quark Gluon
Plasma (QGP) using jet observables and heavy flavor quarks Jet
detection in the central rapidity Tagging of heavy flavor quark
production with lepton ID and displaced vertex Understand the
mystery of large transverse spin asymmetry in hadron collisions,
spin puzzle of proton, property of cold nuclear matter Jet
detection in the forward-looking directions and hadron distribution
within jets, jet correlations Drell-Yan -> lepton pair, W/Z
-> lepton and direct photon ID Jin Huang Quark and gluons inside
spin-polarized protons Big Bang in the Universe Slide 5 CAARI 2014
Jin Huang 5 Courtesy: eRHIC pre-CDR BNL CA-D department eRHIC:
reuse one of the RHIC rings + high intensity electron energy
recovery linearc Possible detectors studied: sPHENIX ePHENIX STAR
eSTAR A purpose-built detector 50 mA polarized electron gun Beams
of eRHIC 250 GeV polarized proton 100 GeV/N heavy nuclei 15 GeV
polarized electron luminosity 10 33 cm -2 s -1 Also, 20 GeV
electron beam with reduced lumi. Slide 6 The compelling question:
How are the sea quarks and gluons, and their spins, distributed in
space and momentum inside the nucleon? Deliverable measurement
using polarized electron- proton collisions The longitudinal spin
of the proton, through Deep-Inelastic Scattering (DIS) Transverse
motion of quarks and gluons in the proton, through Semi-Inclusive
Deep-Inelastic Scattering (SIDIS) Tomographic imaging of the
proton, through Deeply Virtual Compton Scattering (DVCS) Leading
detector requirement: Good detection and kinematic determination of
DIS electrons Momentum measurement and PID of hadrons Detection of
exclusive production of photon/vector mesons and scattered proton
Beam polarimetry and luminosity measurements CAARI 2014 Jin Huang 6
Outlined in EIC white paper, arXiv:1212.1701 Slide 7 The compelling
questions: Where does the saturation of gluon densities set in? How
does the nuclear environment affect the distribution of quarks and
gluons and their interactions in nuclei? Deliverable measurement
using electron-ion collisions Probing saturation of gluon using
diffractive process and correlation measurements Nuclear
modification for hadron and heavy flavor production in DIS events;
probe of nPDF Exclusive vector-meson production in eA Leading
detector requirement: ID of hadron and heavy flavor production
Large calorimeter coverage to ID diffractive events
Detection/rejection of break-up neutron production in eA collisions
CAARI 2014 Jin Huang 7 Outlined in EIC white paper, arXiv:1212.1701
q h ** ee e Slide 8 CAARI 2014 Jin Huang 8 ~2000~2020~2025Time
Current PHENIX f/sPHENIX An EIC detector Current PHENIX as you have
been working on 14y+ work 100+M$ investment 130+ published papers
to date Last run 2016 Comprehensive central upgrade base on BaBar
magnet New opportunity for forward upgrade Jet detector with H-Cal
coverage from -1 better forward bending Work well with RICH in
ePHENIX yoke: Forward & central Hcal + Steel lampshade
Ownership officially transferred to BNL, preparing for shipping
summer 2014 CAARI 2014 Jin Huang 10 BaBar solenoid packed for
shipping, May 17 2013 Slide 11 pp pp p/A IP Shared detector with
future eRHIC program and deliver an unique forward program with
RHICs pp/pA collision white paper submitted to BNL in Apr 2014:
http://www.phenix.bnl.gov/plans.html CAARI 2014 Jin Huang 11
ePHENIX GEM + H-Cal Forward jet with charge sign tagging Unlock
secrets of large A N in hadron collisions + reuse current silicon
tracker & Muon ID detector polarized Drell-Yan with muons
Critical test of TMD framework + central detector (sPHENIX)
Forward-central correlations Study cold nuclear matter in pA Slide
12 Challenge in GEM tracking to achieve high precession with large
indenting angle in the lower region One innovation: use thicker
drift gap in GEM as a mini-TPC and measure the tracklet Successful
test beam data for mini-Drift GEM Large area GEM developments (also
see talk, NP08/369 Y. Qiang ) CAARI 2014 Jin Huang 12 Courtesy :
EIC RD6 TRACKING & PID CONSORTIUM Retain high position
resolution using mini-Drift GEM Beam incident angle (degree) Beam
test in Fermi-Lab: October 2013 Slide 13 CAARI 2014 Jin Huang 13
RICH GEM Station4 EMCal HCal GEM Station2 R (cm) HCal p/A EMCal
GEMs EMCal & Preshower TPC DIRC =+1 = 4 -1.2 GEM Station3 GEMs
Station1 =-1 e-e- e-e- Aerogel z (cm) ZDC z12 m Outgoing hadron
beam Roman Pots z 10 m R (cm) z 4.5m BBC -1
