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RHIC II Scope, Strategy, Plans T. Ludlam RHIC II Spin Physics Workshop Oct. 7, 2005 TANDEMS Gold Ion Collisions in RHIC Beam Energy = 100 GeV/u RHIC 9 GeV/u Q = +79 BOOSTER AGS 1 MeV/u Q = +32 RHIC polarized proton accelerator complex RHIC pC Polarimeters

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slide1

RHIC II

Scope, Strategy, Plans

T. Ludlam

RHIC II Spin Physics Workshop

Oct. 7, 2005

gold ion collisions in rhic

TANDEMS

Gold Ion Collisions in RHIC

Beam Energy = 100 GeV/u

RHIC

9 GeV/u

Q = +79

BOOSTER

AGS

1 MeV/u

Q = +32

rhic polarized proton accelerator complex
RHIC polarized proton accelerator complex

RHIC pC Polarimeters

Absolute Polarimeter (H jet)

BRAHMS

PHOBOS

Siberian Snakes

Siberian Snakes

PHENIX

STAR

Spin Rotators

(longitudinal polarization)

Spin flipper

Spin Rotators

(longitudinal polarization)

Solenoid Partial Siberian Snake

Pol. H- Source

LINAC

BOOSTER

Helical Partial Siberian Snake

AGS

200 MeV Polarimeter

AGS Internal Polarimeter

Rf Dipole

AGS pC Polarimeters

Strong Helical AGS Snake

slide4

The Long Term Vision: RHIC as a QCD Laboratory

Facility upgrades:

EBIS funded for FY 06 start

Detector upgrades first steps underway

RHIC II luminosity upgrade -- e-cooling

eRHIC

slide5

The Evolution of RHIC

  • Processes are in place with the community to refine and articulate the sciencegoals…
  • RHIC II Science Workshops (like this one)
  • eRHIC Workshops (led by A. Deshpande)
  • Budget issues dominate in the short term
  • It is up to us to make the case in the NP community!

i.e. the next Nuclear Physics Long Range Plan

slide6

The Science Driving RHIC Upgrades

  • QCD at high temperature and density: What is the physics of superdense, strongly-interacting matter?
  • QCD at high energy and low x: What is the physics of strong color fields?
  • QCD and the structure of hadrons: What is the origin of nucleon spin?
  • Fundamental questions for experiment:
  • Properties of QGP…sQGP
  • Thermalization
  • Deconfinement
  • Connections with E-M plasma properties
  • Properties of gluonic matter
  • Gluon spin in the nucleon
  • Polarization of the quark sea
  • Transverse spin in QCD

Key Observables

Crucial measurements

Compelling new insights

Unique opportunities

slide7

A Long Term Strategic View

~2012

2008

RHIC II Construction

RHIC

Luminosity & Det. upgrade

Short term upgrades

eRHIC Constr.

Midterm Upgrades

E beam + new detector

RHIC Spin

LHC Heavy Ion

future plans for rhic machine performance th roser
Future plans for RHIC Machine PerformanceTh. Roser
  • Machine goals for next few years with upgrades in progress:
  • Enhanced RHIC luminosity (112 bunches, b* = 1m):
  • Au – Au: 8  1026 cm-2 s-1 (100 GeV/nucleon)
  • For protons also 2  1011 protons/bunch (no IBS):
  • p – p: 60  1030 cm-2 s-1; 70 % polarization (100 GeV) 150  1030 cm-2 s-1; 70 % polarization (250 GeV)(luminosity averaged over store delivered to 2 IRs)
  • EBIS: low maintenance linac-based pre-injector; all species incl. U and pol. He3. Funded in FY 2006; Operational in 2010
  • RHIC II luminosity upgrade: e-cooling, ~10  more luminosity. R&D in progress

2 achieved

6 achieved

rhic luminosity upgrade with electron cooling
RHIC Luminosity Upgrade with Electron Cooling

Gold collisions (100 GeV/n x 100 GeV/n): w/o e-cooling with e-cooling

Emittance (95%) pmm 15  40 15  3

Beta function at IR [m] 1.0 1.0  0.5

Number of bunches 112 112

Bunch population [109] 1 1  0.3

Beam-beam parameter per IR 0.0016 0.004

Ave. store luminosity [1026 cm-2 s-1] 8 70

Pol. Proton Collision (250 GeV x 250 GeV):

Emittance (95%) pmm 20 12

Beta function at IR [m] 1.0 0.5

Number of bunches 112 112

Bunch population [1011] 2 2

Beam-beam parameter per IR 0.007 0.012 ?

Ave. store luminosity [1032 cm-2 s-1] 1.5 5.0

electron ion collider at rhic erhic
Electron-Ion Collider at RHIC: eRHIC
  • 10 GeV, 0.5 A e-ring with 1/3 of RHIC circumference (similar to PEP II HER)
  • 10 GeV electron beam  s1/2 for e-A : 63 GeV/u; s1/2 for e-p: 100 GeV
  • Electron cooling required for high luminosity e-A and low energy e-p collisions
  • Polarized e-He3 (e-n) collisions with EBIS
  • Existing RHIC interaction region allows for typical asymmetric detector
  • Luminosity: up to 1  1033 cm2s1 per nucleon (1  1034 cm2s1 with linac – ring scheme)

BNL, MITcollaboration

slide11

STAR Upgrades

DAQ and TPC-FEE upgrade

Full Barrel Time-of-Flight system

Forward Meson Spectrometer

Magnet

Barrel EMC

End Cap EMC

Beam-Beam Counters

Forward po Det.

TPC

ZDC

VPD’s

(TOF Start)

Photon Mult. Det.

Forward triple-GEM EEMC tracker

FTPC’s

Integrated Tracking Upgrade

Forward silicon tracker

HFT pixel detector

Barrel silicon tracker

the upgraded phenix detector

FCAL

  • Charged Particle Tracking:
    • Drift Chamber
    • Pad Chamber
    • Time Expansion Chamber/TRD
    • Cathode Strip Chambers(Mu Tracking)
    • Forward Muon Trigger Detector
    • Si Vertex Tracking Detector- Barrel (Pixel + Strips)
    • Si Vertex Endcap (mini-strips)
  • Particle ID:
    • Time of Flight
    • Ring Imaging Cerenkov Counter
    • TEC/TRD
    • Muon ID (PDT’s)
    • Aerogel Cerenkov Counter
    • Multi-Resistive Plate Chamber Time of Flight
    • Hadron Blind Detector
  • Calorimetry:
    • Pb Scintillator
    • Pb Glass
    • Nose Cone Calorimeter
  • Event Characterization:
    • Beam-Beam Counter
    • Zero Degree Calorimeter/Shower Max Detector
    • Forward Calorimeter
  • Data Acquisition:
    • DAQ Upgrade
The Upgraded PHENIX Detector
  • Detector Redundancy
  • Fine Granularity, Mass Resolution
  • High Data Rate
  • Good Particle ID
  • Limited Acceptance
  • Charged Particle Tracking:
    • Drift Chamber
    • Pad Chamber
    • Time Expansion Chamber/TRD
    • Cathode Strip Chambers(Mu Tracking)
  • Particle ID:
    • Time of Flight
    • Ring Imaging Cerenkov Counter
    • TEC/TRD
    • Muon ID (PDT’s)
    • Aerogel Cerenkov Counter
  • Calorimetry:
    • Pb Scintillator
    • Pb Glass
  • Event Characterization:
    • Multiplicity Vertex Detector (Si Strip,Pad)
    • Beam-Beam Counter
    • Zero Degree Calorimeter/Shower Max Detector
    • Forward Calorimeter

SMD/

FCAL

slide13

RHIC Upgrades Overview

X upgrade critical for success

O upgrade significantly enhances program

A. Drees 4/4/05

slide14

Detector Upgrades Timeline

“Mid-Term Strategy” presently under discussion

High statistics Au Au; 500 GeV Spin Runs

TOF and VTX construction; Muon trigger

+ “Small” upgrades: HBD, FMS, DAQ

Mid-Term upgrades

PHENIX NCC, FVTX; STAR HFT & Inner Tracker

RHIC II construction

RHIC Detector R&D

LHC Heavy Ion Program

slide15

The Output from these Workshops…

RHIC II Science Whitepaper

A study of physics opportunities for the coming decade

Overview and conclusions-- drawn from Working Group Reports

-writing committee-

  • What are the Critical Measurements?
  • What compelling new insights will these measurements bring to our understanding of fundamental issues of broad scientific interest?
  • Of these measurements, which ones require detector and/or collider upgrades? Which ones could be uniquely addressed at RHIC in the LHC era?
  • What unique scientific opportunities would be lost if RHIC were not upgraded?
  • The arc from RHIC to RHIC II to eRHIC
slide16

Time Scale

  • Workshop November 11-12 at BNL:
  • “final” results from Working Groups
    • Writing Committee in place –
      • Lay out document with Working Group convenors
    • Coordinate with PAC Meeting –
      • preliminary reports to PAC Nov. 3-4
  • Aim to complete the White Paper document by February 2006
    • This puts it in play for the FY 2008 budget cycle
    • Starting point for 2007 Long Range Plan document