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DIRC technology

R&D department

  • DIRC
    • Overview
    • Cherenkov radiation
    • DIRC
    • Experiments
    • Ch. angle calculator
    • Material properties
    • Other
  • PANDA barrel DIRC
    • Overview
    • Baseline design
    • Design options
    • Focusing system
    • Photon yield
    • Time spectrum
    • PID
    • Other
  • Prototype
    • Overview
    • MCP layout
    • Photon yield
    • Hit pattern
    • Time spectrum
    • Calibration
    • SPR
    • PID
    • Beam J14
    • Beam A14
    • Beam M15
    • Beam J15
    • Beam O16
    • Beam A17
    • DIRC@EIC
    • DIRC@GlueX
    • Other
  • Gallery
  • Contact

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Overview

  • First steps
  • geant geometryX 2014
  • Hld analysis workflow
  • prt layout 2015
  • Software installation

MCP layout

  • 1.5 pixel shift
  • 2.5 pixel shift
  • 2.5 pixel shift L1
  • 2.5 pixel shift L2
  • Mcp layout optimization 2015

Photon yield

  • mcp-prism airgap
  • Photons from Deltas
  • Photon yield
  • Photon yield. Plate
  • Photon yield. Proton

Hit pattern

  • Angle scan 1 (beam)
  • Angle scan 2 (beam)
  • Cherenkov cone position
  • hit pattern for L3
  • Mom. vs. particle
  • Monochromatic Cherenkov
  • Pattern vs. path
  • Pattern vs. reflections in prism
  • Plate, beam test geom
  • Plate pion@1.7
  • Plate pion@1.7 max step
  • Plate's hit pattern.
  • Scan over Cherenkov phi
  • step scan. real geom L0
  • step scan. real geom L2
  • Without MCPs
  • z scan of the hit pattern

Time spectrum

  • Calibration spectrum. 50mm
  • PiLas data 14.07.14
  • PiLas data 14.07.14 dch1952
  • PiLas + prelim. corrections
  • Time map 33
  • TOT double structure
  • z scan of the time

Calibration

  • best trigger search
  • Calib. curves. Beam+Pilas
  • Calib. of the fine time. Pilas
  • Calibration of the fine time 0
  • Calibration prism
  • Calibration spectrum. 75mm
  • Walk corr. table

SPR

  • SPR decomposition
  • SPR prj. vs. angle
  • SPR prj. vs. angle. 2012
  • SPR vs. angle
  • SPR vs. pixel size

PID

  • lh sep. for time imaging
  • time imaging j15

Beam J14

  • HP vs. beam width
  • HP vs tilt of dirc
  • J14 corrected time
  • J14 data info
  • J14 hit patterns.
  • step scan

Beam A14

Beam M15

  • debug info may15
  • Fine time catibration 2015
  • LE TE map
  • sim of hit pattern M15

Beam J15

  • Calibration HowTo
  • Calibration Summary
  • chromaticity HP
  • cluster size
  • Detection efficiency
  • Examples of reconst.
  • HP match Sel
  • j15 charge sharing in sim
  • J15 data info
  • J15 plots
  • LH separation
  • Likelihood calculation
  • matched LE
  • Match of the HP
  • Match of the LE
  • mix plots
  • noise investigation
  • PDF for p/pi
  • pre reco
  • pre time diff
  • Quantum efficiency
  • selection cuts
  • single event hit pattern
  • SPR vs time diff. cut
  • time alignment
  • time diff vs ctheta cut
  • Time imaging. LogLikelihood.
  • timing resolution
  • tof correction
  • tof selection
  • tof walk correction
  • TOT

Beam O16

  • 9MCP without shift
  • 9 vs 12 mcp
  • c angle fit o16
  • hit pattern o16
  • LE vs run time
  • mirror reflectivity
  • multiplicity CERN16
  • offset scan 100V
  • offset scan 150V
  • offset scan 200V
  • offset scan 50V
  • pdfs for S208
  • pdfs for S208 TOF1
  • pdfs for S209
  • photon yield o16
  • photon yield o16 plate
  • sep power o16
  • sep power vs. beam prof
  • simulations of pdf
  • single event HP
  • statistic scan for pdf
  • TOF1 walk
  • TOT vs LE S17
  • TOT vs LE S17 with corr

Beam A17

  • A17 data info
  • A17 plots
  • angle match for 50 deg
  • beam direction scan
  • dark counts 17
  • geant visualization
  • hit pattern bar A17
  • hit pattern plate A17
  • le match: sim vs. data
  • le offset
  • mcp multiplicity
  • minimization parameters
  • momentum scan A17
  • pion-proton mult ratio
  • plate vs bar for 3LC
  • prism-lens step scan
  • PY: grease vs air
  • quantum efficiency 17
  • separation vs phi
  • sep power vs nph
  • time resolution A17
  • tir separation vs tof cut
  • tof2 walk correction
  • TOF PID 17
  • walk correction A17
  • x scan

DIRC@EIC

  • 3.5 cm vs 7 cm bar width
  • background track
  • bar thickness
  • b-field
  • cern layout with 256 pixels
  • Cherenkov circle
  • Cherenkov circle fit
  • core with field
  • DIRC designs
  • DIRC@EIC prototype sim
  • DIRC@EIC prototype sim 256 vs 64
  • e/pi rejection
  • fast pid
  • fast sim for EIC DIRC
  • focusing prism
  • hit pattern vs propagation time
  • LAPPD photon multiplicity
  • lens3's reflective edge
  • lens3 with 2mm pixels
  • lens vs no lens
  • mcp-pmts 8x8 vs 16x16 pi/e
  • mcp-pmts 8x8 vs 16x16 pi/K
  • Measured arrival time vs. calculated.
  • momentum scan for 32x32 pixels PMT
  • MS for fast sim
  • nlak33 vs sapphire
  • path length
  • pdf scan for 11 bar
  • pdf scan for 7 bar
  • performance vs design
  • performance vs tracking resoluton
  • physics list comparision
  • pi/e reconstruction
  • pixel size scan @ 6 GeV/c
  • plate as EV
  • post-dirc tracking
  • qe comparison
  • radii scan for eic
  • Realistic tracking
  • separation vs. track res
  • sep vs tracking resolution
  • Spr fit for eiddirc
  • Spr fit for eiddirc. No cuts
  • SPR vs sensor dimensions
  • start time resolution
  • start time resolution TI
  • Time difference
  • Time difference cut
  • time spread at epic dirc
  • TI with monochromatic light
  • TOP resolution
  • track smearing at bar

DIRC@GlueX

  • angle scan for gluex dirc
  • angle scan g1
  • angle vs mirror scan
  • bar rotation
  • Cherenkov ring fit
  • Cherenkov track resolution
  • chromatic correction
  • delta time shift
  • first beam hit pattern
  • geometrical reco for gluex
  • hit pattern
  • hit pattern 2
  • hitpatterns with hdgeant4
  • hit pattern vs theta-phi
  • lut improvements
  • mirror scan for gluex dirc
  • pdf scan map
  • per-bin plots
  • performace maps
  • performance vs particle charge
  • Photon multiplicity
  • photon yield
  • pi/K sep power (updated)
  • pion/kaon sep power
  • reco cuts
  • reco cuts 2
  • reconstructed C angle
  • time difference
  • time imaging
  • track correction
  • transport efficiency
  • v01 vs v12

Other

  • 3-layer lens designs
  • beam direction scan j18
  • beam profile, trigger
  • Cherenkov ring prt2015
  • coma effect
  • cookie vs. grease
  • edd
  • event by event
  • Focal Plane
  • focal plane L3 jlab
  • focal plane of RMI lens
  • Focal Plane vs Energy
  • Focal plane with dist
  • geometrical reconstruction j18
  • lens 2 vs. lens 6 RMI
  • lens thickness
  • mcp layouts for 2017
  • multiplicity
  • offset scan 01.07.18
  • offset scan 18.10.16
  • pico time resolution
  • radii scan for 3-layer cyl lens
  • radii scan for 3LC 5 mm
  • radii scan for 3LCL with cut
  • radii scan for pbf2
  • scan of mcp12
  • signal shape SEQ 1
  • signal shape SEQ (updated)
  • signal shape STD (updated)
  • Threshold scan 3
  • Threshold scan 4
  • tot
  • yield vs intensity and threshold
  • yield vs pilas intensity
  • yield vs pilas intensity 2
debug info may15
sim of hit pattern M15
Fine time catibration 2015
LE TE map
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