PHENIX muon tracker no tracking algorithm no rikai

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PHENIX muon tracker no tracking algorithm no rikai. kentaro watanabe. Muon Tracking System. phnx _z South: St1 1.800m St2 3.000m St1 4.600m North : St1 1.800m St2 3.470m St1 6.125m . . . . . . . . . - PowerPoint PPT Presentation

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PHENIX muon tracker notracking algorithm no rikaikentaro watanabeMuon Tracking System

phnx_zSouth: St11.800m St23.000m St14.600mNorth: St11.800m St23.470m St16.125mAt North Arm, the position of octant and half octant

Muon Magnet (radial)( ) (azimuthal)1 cathode 1 (non-stereo plane ) 1 (stereo plane ) 2 stereo plane ()100m non-stereo plane stereo plane 300 m

cluster Mathieson Fit 1 2~3 Mathieson Fit([12] ) 100 m3 strip strip () 1 % 100 m [11] 100 fC 1 fC

hitclustercoordstub

TrackTrack Fit

TMutHitTMutClusTMutCoordTMutStubTMutGapCoordTMuTrkTMuTrkResTMutTrkPar

radial azimuthal azimuthal radial Sagitta analysis on the Zero field run motivation

sagitta_xsagitta_ysagitta_wsagitta_rtrack pointextarnal pointexternal point errortrack_z[0]track_z[1]track_z[2]track_x[0]track_x[1]external_xtrack_x[2]

Sagitta analysis on the Zero field run tracking parameter study

parameter studyEntries

Run9 March Zero field run track entries par half octant @South arm Marchhalf octant = 1half octant = 2South Octant 7-h1 is little extremely!! track distribution phnx X:Y satation 1

track distribution phnx X:Y satation 2

track distribution phnx X:Y satation 3

South Octant 7-h1 is little extremely!! that reason is here. And octant 3s out side acceptance is dead. It is important information.

Run9 March Zero field run track entries par half octant @North arm MarchNorth Octant 2-h1,2 is little extremely!! half octant = 1half octant = 2track distribution phnx X:Y satation 1

track distribution phnx X:Y satation 2

track distribution phnx X:Y satation 3

Nouth Oct 0 half 1

track_half_octant==0track_half_octant==1track_half_octant==0track_half_octant==1Run9 marchRun9 mayparameter studyMuon ID hit NeosCone() Central Magnet() 5 1/100 5 MuID 1 MuID 5 2.5GeV/C (Run11)

2.5GeV/c first layer 0 origin parameter studyvertex position # TMutTrkPar *trk_par_vtx = mut_trk get_trk_par_vtx( ); float vtx_x; TMutTrkPar*trk_par_vtx.get_x();

arm 0 (South)arm 1 (North)

float vtx_y; TMutTrkPar*trk_par_vtx.get_y();

arm 0 (South)arm 1 (Nouth)

float vtx_z; TMutTrkPar*trk_par_vtx.get_z();

arm 0 (South)arm 1 (North)

parameter studyclstr size

south arm station3 gap1 octant 2,3,5Conclusion !! cluster size 16 strange peak from South Arm Station2 , octant5 ,gap0.South Arm Station3 , octant2 , 3 , 5 ,gap1.

parameter study2 cluster sizeparameter studysagitta_s3_wsagitta distribution

southsagitta distribution North

Sagitta analysis on the Zero field run sagitta error study

( multiple scattering ) ()

1/ee

collisionexternal pointstub point st3sagittastub point st2stub point st1stub point st3external pointsagittastation3 sagittamultiple scattering

Station2 0.1% 0.2% station3 sagittamultiple scattering station2

North South arm station2-3 Station-3 station2-3next 37g cm2x/X0station

NorthSouth

Sagitta analysis on the Zero field run fitting study

fitting study

sagittagausiam fitfit2gausgaus+pol22gaus+pol2

2gausiamgausiam + pol2

2gausiam + pol2

south octant8 half2south octant3 half2south octant1 half2sample of high improvement

south octant8 half2south octant3 half2south octant1 half2

what is the compositiongaus + gaus + pol2sample: south octant8 half2

12345678

Run9 South March mean position direction ?

12345678

Run9 North March mean position direction ?Sagitta analysis on the Zero field run compere OASys parameter

IKEDA sanRun9 Zero field Run analysis segment half octantnumber of track (March)

octant ID numberoctant 1.0 = octant1 half oct 1octant 1.5 = octant1 half oct 2South Run9 Marchhalf octant 2.930,000 event IDincreaceincreace1.0418132.8652362051.5328462.8867252572.0288612.8582834332.5352562.9183806733.0365042.9013490293.5303182.8846273394.0271992.8621799264.5172672.8210293195.0152232.8667075415.5311762.9104111776.0336152.8910328536.5322982.9369115447.075412.891397047.5356282.9226161578.0288112.8937163148.5406952.935276774IDincreaceincreace1335222.8541954751.5498172.8737352842217442.8055301842.572562.5607657563411192.8691304153.5481022.8843577394453672.8694165164.5381102.8533287945368522.8443521355.5463182.87689446429252.8575014066.5325562.8777252287228362.7972611367.5438452.8594147588204672.7604507148.5272822.86085533North Run9 Marchhalf octant 2.835,000 event

IDincreaceincreace173394.3058558561.562074.261692065255244.0152838432.564804.282674772358144.1342318063.548384.236120401452044.1926380374.538574.296581197537014.2694346295.556894.223229462662804.3672922256.563764.026103465715274.1945606697.560064.213483146854544.3054545458.571944.315207373South Run9 Mayhalf octant 4.25,500 event South Run9 Mayhalf octant 4.28,000 event IDincreaceincreace177564.1566951571.5109004.214391035298914.3102409642.575184.193712829364474.1114864863.592924.285714286495224.1744.573894.20703125549444.0669975195.588704.302308265675994.279671996.561224.228902954776594.3503937017.588954.19045911878724.2355117148.568084.147480351

sample is Run9 March South octant 0 half oct 0entries 22417Rchis 2.051st gaus ------mean -0.149[cm]mean_er0.0021[cm]sigma 0.19[cm]entries 64230Rchis 1.411st gaus ------mean -0.123[cm]mean_er0.00148[cm]sigma 0.14[cm]improvement parameters

North arm 50mincrease event from ex-analysis

South Run9 March to MayNorth Run9 March to May

armnew(m)old(m)new_er(m)old_er(m)south-47.348.4240.1808561428.22122.44-0.7648.4288271643.11-62.8285.6336.3362147230.55-42.59-1.3131.4960711825.0535.95-21.8636.3154732927.72-86.9725.0444.6185813338.28-10.791.8635.3249175529.73-18.8284.4547.9174425441.18-146.8153.6747.4677121840.1337.55-27.7636.5976665928.83-101.7660.0835.4522354727.08-120.3570.1334.0431784728.02-40700.0652.742093.592498180.05-46.21-9.7836.2880214430.2879.1580.1754.5059116148.9219.45-24.1232.2463176226.73armnew(m)old(m)new_er(m)old_er(m)north-613.9-405.970001126.686086483.880806-224.09-122.79000167.7352493238.240917-373.82-449.81005967.1958406547.701385-914.84-833.070007126.7264684128.672318-60.5647.32006864.7252238346.013233852.73786.05993750.3364380938.276806611.14677.03997887.8003695956.988846-33.09-22.79000983.6069434953.0056849.53-57.690002107.648547155.626732-110.98-145.17999362.0353133342.933235-181.12-142.14990257.6203132638.616051-82.879.41003472.3118807749.383503-333.6-816.820068301.115149150.597313-656.72-565.63000563.7841524244.862495-746.67-739.69995170.190247955.14566-294.09-311.85998572.0976095350.915405segment octantsegment

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