long term detector upgrade plans for rhic and erhic n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Long-term Detector Upgrade Plans for RHIC and eRHIC PowerPoint Presentation
Download Presentation
Long-term Detector Upgrade Plans for RHIC and eRHIC

Loading in 2 Seconds...

play fullscreen
1 / 25

Long-term Detector Upgrade Plans for RHIC and eRHIC - PowerPoint PPT Presentation


  • 117 Views
  • Uploaded on

23rd Conference on Application of Accelerators in Research and Industry. Long-term Detector Upgrade Plans for RHIC and eRHIC. ● Motivation ● PHENIX ● STAR ● eRHIC Detectors ● . Jin Huang Brookhaven National Lab. Acknowledgements . PHENIX Collaboration STAR Collaboration

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Long-term Detector Upgrade Plans for RHIC and eRHIC' - mendel


Download Now An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
long term detector upgrade plans for rhic and erhic

23rd Conference on Application of Accelerators in Research and Industry

Long-term Detector Upgrade Plans for RHIC and eRHIC

● Motivation ● PHENIX ● STAR ● eRHIC Detectors ●

Jin Huang

Brookhaven National Lab

Acknowledgements

  • PHENIX Collaboration
  • STAR Collaboration
  • BNL EIC Task Force
  • BNL CA-D department
overview
Overview

Strong interest in EIC in the nuclear physics community also shown in next talk, an EIC envisioned by Jefferson Lab: NP08/433, P. Turonski

Jin Huang <jhuang@bnl.gov>

  • Relativistic Heavy Ion Collider (RHIC)
    • The most versatile hadron collider in the world, and world’s 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
rhic in 2017 2025 driving physics goals and requirements on detection capabilities
RHIC in 2017-2025: driving physics goals and requirements on detection capabilities

Small bang at RHIC and formation of Quark Gluon Plasma

Quark and gluons inside

spin-polarized protons

Jin Huang <jhuang@bnl.gov>

  • 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

Big Bang in the Universe

rhic e rhic around year 2025 one realization of electron ion collider
RHIC → eRHIC around year 2025 One realization of electron ion collider:

eRHIC: reuse one of the RHIC rings + high intensity electron energy recovery linearc

50 mA polarized

electron gun

  • Possible detectors studied:
  • sPHENIX→ ePHENIX
  • STAR→ eSTAR
  • A purpose-built detector
  • Beams of eRHIC
  • 250 GeV polarized proton
  • 100 GeV/N heavy nuclei
  • 15 GeV polarized electron
  • luminosity ≥ 1033 cm-2s-1
  • Also, 20 GeV electron beam with reduced lumi.

Courtesy: eRHIC pre-CDR

BNL CA-D department

Jin Huang <jhuang@bnl.gov>

physics goals nucleon as a laboratory for qcd
Physics goals: nucleon as a laboratory for QCD

Outlined in EIC white paper, arXiv:1212.1701

Jin Huang <jhuang@bnl.gov>

  • 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 exclusiveproduction of photon/vector mesons and scattered proton
    • Beam polarimetry and luminosity measurements
physics goals nucleus as a laboratory for qcd

h

g*

e’

q

e

Physics goals: nucleus as a laboratory for QCD

Outlined in EIC white paper, arXiv:1212.1701

Jin Huang <jhuang@bnl.gov>

  • 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
long term upgrade plan for phenix
Long-term upgrade plan for PHENIX

Documented: http://www.phenix.bnl.gov/plans.html

Current PHENIX

f/sPHENIX

An EIC detector

  • Comprehensive central upgrade base on BaBar magnet
  • New opportunity for forward upgrade
  • Jet detector with H-Cal coverage from -1<η<4
  • Path of PHENIX upgrade leads to a capable EIC detector
  • Large coverage of tracking, calorimetry and PID

~2000

~2020

~2025

Time

RHIC: A+A, spin-polarized p+p, spin-polarized p+A

eRHIC: e+p, e+A

Jin Huang <jhuang@bnl.gov>

Current PHENIX as you have been working on

14y+ work100+M$ investment

130+ published papers to date

Last run 2016

the sphenix detector
The sPHENIX detector

Baseline detectors for sPHENIX

sPHENIX MIE, http://www.phenix.bnl.gov/plans.html

Jin Huang <jhuang@bnl.gov>

Details in Talk NP08 # 356, Achim Franz (BNL)

sPHENIX: major upgrade to the PHENIX experiment

Physics Goals: detailed study QGP using jets and heavy quarks at RHIC energy region

Baseline consists of new large acceptance EMCal+HCal built around recently acquired BaBar magnet. Additional tracking also planned

MIE submitted to DOEStrong support from BNLDOE scientific review in July 2014

A good foundationfor future detector upgrade

sphenix magnet as foundation for upgrades
sPHENIX Magnet as foundation for upgrades

BaBar solenoid packed for shipping, May 17 2013

Jin Huang <jhuang@bnl.gov>

  • BaBar superconducting magnet became available
    • Built by Ansaldo→ SLAC ~1999
    • Nominal field: 1.5T
    • Radius : 140-173 cm
    • Length: 385 cm
  • Field calculation and yoke tuning
    • Three field calculator cross checked: POISSION, FEM and OPERA
    • Using hadron calorimeters as yoke
  • Excellent features
    • Designed for homogeneous B-field in central tracking
    • Longer field volume for forward tracking
    • Higher current density at end of the magnet -> 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
forward spectrometer of sphenix fs phenix for forward detection in rhic pp pa collisions
Forward spectrometer of sPHENIX: fsPHENIXFor forward detection in RHIC pp/pA collisions

IP

ePHENIX GEM + H-Cal

→ Forward jet with charge sign tagging

→ Unlock secrets of large AN 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

 Single jet in GEANT4

pT = 4.1 GeV/c, eta = 3

p/A

p↑

GEMs

Hadron Calo.

Jin Huang <jhuang@bnl.gov>

Shared detector with future eRHIC program and deliver an unique forward program with RHIC’s pp/pA collision

white paper submitted to BNL in Apr 2014: http://www.phenix.bnl.gov/plans.html

on going detector r d mini drift gem
On-going detector R&D : mini-Drift GEM

Courtesy : EIC RD6 TRACKING & PID CONSORTIUM

Beam test in Fermi-Lab: October 2013

Retain high position resolution using mini-Drift GEM

Beam incident angle (degree)

Jin Huang <jhuang@bnl.gov>

Challenge in GEM tracking to achieve high precession with large indenting angle in the lower η 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 )

in erhic era concept for an eic detector built around the babar magnet
In eRHIC era: concept for an EIC Detector Built Around the BaBar Magnet

Working title: “ePHENIX”

Cost: sPHENIX MIE + 75M$(including overhead + contingency)

More: arXiv:1402.1209

R (cm)

η=+1

R (cm)

HCal

η=-1

HCal

EMCal

Aerogel

z ≤ 4.5m

-1.2

EMCal & Preshower

RICH

Outgoing

hadron

beam

DIRC

TPC

η= 4

EMCal

BBC

e-

p/A

GEM

Station2

GEMs

GEMs

Station1

GEM

Station3

GEM

Station4

z (cm)

ZDC

z≈12 m

Roman Pots

z≫10 m

Jin Huang <jhuang@bnl.gov>

  • -1<η<+1 (barrel) : sPHENIX + Compact-TPC + DIRC
  • -4<η<-1 (e-going) : High resolution calorimeter + GEM trackers
  • +1<η<+4 (h-going) :
    • 1<η<4 : GEM tracker + Gas RICH
    • 1<η<2 : Aerogel RICH
    • 1<η<5 : EM Calorimeter + Hadron Calorimeter
  • Along outgoing hadron beam: ZDC and roman pots
ephenix tracking and pid detectors
ePHENIX : Tracking and PID detectors

e-going GEMs

-4.0<η<-1

TPC

-1<η<+1

DIRC

-1<η<+1

h-going GEMs

1<η<2

gas RICH

1<η<4

Aerogel RICH

1<η<2

IP

Geant4 model of detectorsinside field region

dp/p~1%×p

TPC

GEMs

eGEM

RICH

Main detector:

Driving factor:

e-going GEM

Electron ID

TPC

Kinematic

h-going GEM

Hadron PID

dp/p~0.1%×p

  • Additional dp/p term:
  • dp/p≲3% for 1<η<3
  • dp/p~10% for η=4

Fringe field

1.5 T main field

Fringe field

e-

p/A

Tracking

Hadron PID

Calorimeters (H-Cal cover η > -1)

p/A

e-

η

Jin Huang <jhuang@bnl.gov>

gas rich the design

Courtesy : EIC RD6 TRACKING & PID CONSORTIUM

Beam test data

StonyBrook group

Gas RICH- The Design

Fermilab T-1037 data

R (cm)

η=1

RICH Mirror

RICH Gas

Volume (CF4)

IP

Ring size (A.U.)

Focal plane

HBD detector

η=2

spherical

mirror

center

η=3

Entrance

Window

η=4

Z (cm)

Jin Huang <jhuang@bnl.gov>

  • Hadron ID for p>10GeV/c require gas Cherenkov
    • CF4 gas used, similar to LHCb RICH
  • Beautiful optics using spherical mirrors
  • Photon detection using CsI−coated GEM in hadron blind mode- thin and magnetic field resistant
  • Active R&D:
    • Generic EIC R&D program
    • recent beam tests by the stony brook group
gas rich performance in ephenix

Ring radius ± 1σ field effect for worst-case region at η~+1

Gas RICH - performance in ePHENIX

A RICH Ring:

Photon distribution due to tracking bending only

Field effect has very little impact for PID

R

R < 52 mrad for C4F10

Dispersion

ΔR <2.5 mrad

π

K

p

η~1

PID purity at η=4 (most challenging region w/ δp)

EMCal

Purity

Aerogel

  • Strong fringe field unavoidableTuned yoke → magnetic field line most along track within the RICH volume → veryminor ring smearing due to track bending
  • Reached good hadron ID to high energy

track

RICH

η~4

Jin Huang <jhuang@bnl.gov>

the star detector and recent upgrades
The STAR detector and recent upgrades

Magnet: 0.5 T solenoidal

6m (L) x 6m (D)

Tracking + PID : TPC

4m (L) x 4m (D)

PID: TOF

Calorimeters: BEMC, EEMC, FMS (-1<η<+4)

Run13/14

Muon Telescope detector

Run12/13

Forward GEM Tracker

Run14 : Heavy Flavor Tracker

See talk NP08/322 J. Schambach

Courtesy: Z.Y. Ye (UIC)

RHIC/AGS User Meeting

Long-term upgrade focus on strengthen forward directions

Jin Huang <jhuang@bnl.gov>

long term upgrade for star
Long-term upgrade for STAR

Courtesy: eSTAR LOI eRHIC pre-CDR

RHIC

eRHIC

Jin Huang <jhuang@bnl.gov>

Color code:

star highlight of on going r d
STAR: highlight of on-going R&D

Courtesy: E. Sichtermann (LBNL) DIS2014, eSTAR LOI

Jin Huang <jhuang@bnl.gov>

  • iTPC: Inner TPC upgrade
    • Pad-row arrangementfor readout upgrade
    • Material reduction
    • Extend eta coverage, increase dE/dx resolution and low-pt coverage
  • CEMC: Crystal EM Calorimeter
    • New type of crystal (BSO)
    • Cost-effective crystal electromagnetic calorimeter
  • GTRD: GEM based TRD
    • Help electron ID by detecting transition radiation from electron
    • Additional dE/dx point for hadrons
    • Additional tracking point
star highlight of on going r d cont
STAR: highlight of on-going R&D (cont.)

Courtesy: O. Tsai (UCLA) CALO2014

FCS Concept in STAR

2014 Fermilab Beam test: Good linearity Resolution consist. w/ Geant4

Prototype

Jin Huang <jhuang@bnl.gov>

FCS: Forward Calorimetry System

  • EM Calorimeter: W-Epoxy and scintillator fiber sampling calorimeter
    • dE/E ~ 12%/ √E
    • Compact: X0 ~ 7mm, Rm~2.3cm,
  • Hadron calorimeter: Pb and scintillator plates (10mm and 2.5mm) sampling structure, photon readout using 3mm thick WLS bar
    • dE/E ~ 60%/ √E
a purpose built erhic detector
A purpose-built eRHIC detector

Solenoidal magnetic field with high precision silicon and GEM tracking

Lepton-ID:

-3 <h< 3: e/p

1 <|h|< 3: Hcal

3 <|h|< 4: Ecal & Hcal

|h|< 4: g suppression via tracking

hadron PID:

1<|h|<3: RICH

-1<h<1: TPC (dE/dx)

Central rapidities PID possiblities:

DIRC, Time-of-Flight,

proximity focusing Aerogel-RICH, …

e-

p/A

Courtesy: BNL EIC taskforce

Jin Huang <jhuang@bnl.gov>

a purpose built erhic detector tracking system
A purpose-built eRHIC detector- Tracking system

Courtesy: A.Kiselev (BNL), E.C. Aschenauer (BNL) DIS2014

p+

Jin Huang <jhuang@bnl.gov>

  • Compact trackers in ~3 T solenoidal magnetic field:
    • MAPS silicon barrel and disk detectors / TPC / GEM stations
  • Tracking system modeled in detail under EIC-ROOT simulation-analysis framework
  • Expect 2-3% or better momentum resolution in the whole kinematic range
  • Alternative tracking solution studied: cylindrical micromegas instead of TPC
a purpose built erhic detector calorimeters
A purpose-built eRHIC detector - Calorimeters

Courtesy: A.Kiselev (BNL) DIS2014 O. Tsai (UCLA) CALO2014

2014 Fermilab beam test for CEMC and FEMC. Result show good consistency to simulation

CEMC

beam test

STARFEMC

EIC CEMC

Jin Huang <jhuang@bnl.gov>

Forward – FEMC - (η > 1): W-epoxy scintillating fiber sampling technology (STAR calorimeter upgrade)

Central – CEMC - (-1 < η < 1): Same as forward, but tapered towers

Backward – BEMC - (η < -1): Options of PWO crystals (~PANDA design) or high res. sampling calorimeter

integration of detector to erhic
Integration of detector to eRHIC

Courtesy: E.C. Aschenauer (BNL), A.Kiselev (BNL), DIS2014

An eRHIC IR design by Brett Parker (BNL)

outgoing p/A

Collision

point

A parallel study on MEICto reach same physics goal:NP08/433, P. Turonski

incoming e-

Jin Huang <jhuang@bnl.gov>

  • For |z|<4.5m, machine-element free region for detectors
  • For shared region: close collaboration between BNL EIC taskforce and Collider-Accelerator Department with on-going studies:
    • Roman Pots
    • Zero Degree Calorimeter
    • Low Q2 tagger
    • Luminosity detector
    • Electron polarimeter
    • IP12: Hadron beam polarimeter
summary
Summary

Jin Huang <jhuang@bnl.gov>

  • RHIC and eRHIC: unique facilities to study QCD origin of the universe and the world around us
  • Long term upgrade planed by both PHENIX and STAR collaborations to fully explore physics potential of RHIC
    • PHENIX: comprehensive upgrade of detectors built upon recently acquired BaBar super conducting coil
    • STAR: strengthens forward-looking detection capabilities
  • Studies of possible eRHIC detectors
    • BaBar magnet and sPHENIX as foundation for an eRHIC detector
    • STAR → eSTAR
    • A purpose-built detector
    • IR design on-going
    • Active detector R&D program for EIC: https://wiki.bnl.gov/conferences/index.php/EIC_R%25D
  • Exciting and abundant opportunities for innovation and collaboration