ecal energy resolu0on updates ! 0 2 1 · 6/1/2017 · !0! ⨁!1⨁!2! ecal energy resolu0on...

!"!

= !0!⨁!1⨁

!2!

ECALEnergyResolu0onUpdates

PDG:34.8.1

u Checktheenergyresolu0onfor1GeVelectrontoseethedependenceofangle,Al,andfiled.

u UsethesameenergyfiGngpointsfromRakitha’sresults(PcDR)tocomparetheenergyresolu0ongotfromGEMCwiththatgotfromRemollforthePVDISconfigura0on.

u Whyp2issolarge?

1.  7-moduleconfigura0on:basedonthePVDISconfigura0on

a)preshower:onlykeep2-cmscin0llator,andremovethe1.12-cmlead(inordertotestlowmomentum(100MeV/cand200MeV/c)e+,andπ+ showerbehaviorwiththeSOLIDshashalikdesign )b)shower:194layersoflead(0.05cm),scin0llator(0.15cm)andMylar(0.024cm)alterna0onconfigura0on.c)support:Al(2cm)2.1748-moduleconfigura0on:thesameas7-modulestructure3.PVDISconfigura0on

Simula0onConfigura0ons

AllresultsbelongstotheECALstandalonesimula0on

1GeVe-EnergyResolu0onDependenceStudy

1GeVe- σ µ MeV σE/E(σ/µ)%

Nofield

7modulesθ= 0ο 9.343±0.022 222.662±0.029 4.20±0.010

1748modulesθ= 0ο 9.536±0.068 239.263±0.096 3.98±0.028

1748modulesθ= 25ο 9.581±0.072 241.083±0.097 3.97±0.030

1748modulesθ= 25ο noAl

9.769±0.074 243.921±0.098 4.00±0.030


9.804±0.072 242.641±0.099 4.04±0.030

Field

1748modulesθ= 25ο 9.706±0.071 240.944±0.098 4.03±0.029


9.640±0.071 244.35±0.097 3.95±0.029

1748modulesθ= 25ο

prelead(PVDIS)14.721±0.11 219.647±0.153 6.70±0.05

1748modulesθ= 25ο

prelead,(PVDISnoAl)14.829±0.15

237.115±0.150 6.25±0.05

htotEdep_ecEntries 10000Mean 219.4RMS 15.29Underflow 0Overflow 0

/ ndf 2χ 138.7 / 59Prob 08− 2.276eConstant 6.7± 534.8 Mean 0.2± 219.6 Sigma 0.11± 14.72

totEdep_scin(MeV)0 200 400 600 800 10000

100

200

300

400

500


/ ndf 2χ 138.7 / 59Prob 08− 2.276eConstant 6.7± 534.8 Mean 0.2± 219.6 Sigma 0.11± 14.72

ec

htotEdep_ec_leadEntries 10000Mean 557.1RMS 56.88Underflow 0Overflow 0

totEdep_lead(MeV)0 200 400 600 800 10000

20

40

60

80

100

120

140

160 htotEdep_ec_leadEntries 10000Mean 557.1RMS 56.88Underflow 0Overflow 0

ec

htotEdep_ec_preshowerEntries 10000Mean 29.51RMS 15.43Underflow 0Overflow 0

totEdep_preshower(MeV)0 200 400 600 800 10000

100

200

300

400

500


ec

htotEdep_ec_AlEntries 10000Mean 66.31RMS 30.85Underflow 0Overflow 0

totEdep_Al(MeV)0 200 400 600 800 10000

50

100

150

200

250htotEdep_ec_Al

Entries 10000Mean 66.31RMS 30.85Underflow 0Overflow 0

ec

htotEdep_ec_TylarEntries 10000Mean 44.37RMS 5.674Underflow 0Overflow 0

totEdep_Tylar(MeV)0 10 20 30 40 50 60 70 80 90 1000

20

40

60

80

100

120

140


ec

htotEdep_ec_preleadEntries 10000Mean 102.4RMS 47.93Underflow 0Overflow 0

totEdep_prelead(MeV)0 200 400 600 800 10000

20

40

60

80

100

120

140

160

180htotEdep_ec_prelead


ec

htotEdep_ec_scinleadEntries 10000Mean 747RMS 76.72Underflow 0Overflow 0

totEdep_scinlead(MeV)0 200 400 600 800 10000

20

40

60

80

100

120


ec

htotEdep_ec_totalEntries 10000Mean 989.6RMS 14.75Underflow 0Overflow 0

totEdep_total(MeV)0 200 400 600 800 10000

200

400

600

800

1000

1200

1400

1600 htotEdep_ec_totalEntries 10000Mean 989.6RMS 14.75Underflow 0Overflow 0

ec

1GeVe-PVDISconfigura0onshower scin shower lead

preshower scin

preshower leadMylar

Al

Shower scin + lead total


/ ndf 2χ 31.81 / 42Prob 0.8733Constant 10.1± 819.9 Mean 0.1± 240.9 Sigma 0.071± 9.706

totEdep_scin(MeV)0 200 400 600 800 10000

100

200

300

400

500

600

700

800htotEdep_ec


/ ndf 2χ 31.81 / 42Prob 0.8733Constant 10.1± 819.9 Mean 0.1± 240.9 Sigma 0.071± 9.706

ec

htotEdep_ec_leadEntries 10000Mean 679RMS 17.29Underflow 0Overflow 0

totEdep_lead(MeV)0 200 400 600 800 10000

100

200

300

400

500

600htotEdep_ec_lead

Entries 10000Mean 679RMS 17.29Underflow 0Overflow 0

ec


totEdep_preshower(MeV)0 10 20 30 40 50 60 70 80 90 1000

200

400

600

800

1000

1200htotEdep_ec_preshower


ec

htotEdep_ec_AlEntries 10000Mean 13.07RMS 5.309Underflow 0Overflow 1

totEdep_Al(MeV)0 10 20 30 40 50 60 70 80 90 1000

50

100

150

200

250

300

350

400htotEdep_ec_Al


ec



50

100

150

200

250 htotEdep_ec_TylarEntries 10000Mean 54.71RMS 3.575Underflow 0Overflow 0

ec

htotEdep_ec_preleadEntries 10000Mean 0RMS 0Underflow 0Overflow 0

totEdep_prelead(MeV)0 200 400 600 800 10000

2000

4000

6000

8000

10000 htotEdep_ec_preleadEntries 10000Mean 0RMS 0Underflow 0Overflow 0

ec


totEdep_scinlead(MeV)0 200 400 600 800 10000

100

200

300

400

500

600

700

800

900 htotEdep_ec_scinleadEntries 10000Mean 915RMS 16.85Underflow 0Overflow 0

ec



200

400

600

800

1000

1200

1400htotEdep_ec_total


ec

shower scin shower lead

preshower scin

preshower leadMylar

Al

shower scin + lead total

1GeVe-PVDISconfigura0onwithoutPre-lead


/ ndf 2χ 534.9 / 86Prob 0Constant 21.8± 5414 Mean 0.01± 20.02 Sigma 0.007± 2.932

totEdep_scin(MeV)0 20 40 60 80 100 120 140 160 180 2000

1000

2000

3000

4000

5000


/ ndf 2χ 534.9 / 86Prob 0Constant 21.8± 5414 Mean 0.01± 20.02 Sigma 0.007± 2.932

echtotEdep_ec_lead


totEdep_lead(MeV)0 20 40 60 80 100 120 140 160 180 2000

500

1000

1500

2000

2500

3000

3500

htotEdep_ec_leadEntries 99995Mean 58.59RMS 4.914Underflow 0Overflow 0

ec


totEdep_preshower(MeV)0 10 20 30 40 50 60 70 80 90 1000

2000

4000

6000

8000

10000

12000

14000

16000

18000htotEdep_ec_preshower


echtotEdep_ec_Al

Entries 99995Mean 10RMS 3.243Underflow 0Overflow 0

totEdep_Al(MeV)0 10 20 30 40 50 60 70 80 90 1000

1000

2000

3000

4000

5000

6000

7000 htotEdep_ec_AlEntries 99995Mean 10RMS 3.243Underflow 0Overflow 0

ec



1000

2000

3000

4000

5000

6000

7000

8000


echtotEdep_ec_scinlead


totEdep_scinlead(MeV)0 20 40 60 80 100 120 140 160 180 2000

1000

2000

3000

4000

5000 htotEdep_ec_scinleadEntries 99995Mean 78.62RMS 5.226Underflow 0Overflow 0

ec



2000

4000

6000

8000

10000

12000

14000 htotEdep_ec_totalEntries 99995Mean 97.38RMS 4.021Underflow 0Overflow 0

ec

100 MeV/c, e+ 7modules configura0on(old)

shower scin shower lead

preshower scin Al

scin + lead

total

Mylar

depE/flux_pEntries 9999Mean 0.9743RMS 0.032Underflow 0Overflow 5365

totEdep/E0.75 0.8 0.85 0.9 0.95 1

events

0

200

400

600

800

1000


100MeV/ce+

100MeVe-


totEdep/E0.75 0.8 0.85 0.9 0.95 1

events

0

1000

2000

3000

4000

5000depE/flux_p


100MeV/ce-

TotalEdepositfrac0on


totEdep/E0.75 0.8 0.85 0.9 0.95 1

eve

nts

0

500

1000

1500

2000

2500 depE/flux_pEntries 9998Mean 0.9789RMS 0.0296Underflow 0Overflow 2836

100MeV/cγ



totEdep/E0.75 0.8 0.85 0.9 0.95 1

events

0

20

40

60

80

100

120

140

160 depE/flux_pEntries 1000Mean 0.9661RMS 0.0182Underflow 0Overflow 01GeV/ce+


totEdep/E0.75 0.8 0.85 0.9 0.95 1

even

ts

0

2000

4000

6000

8000

10000

12000

14000depE/flux_p


1GeV/ce-


Fortheenergyovercoun0ngissue:Ø Nothappenforneitherlowandhighenergyelectron

Ø  Happenforlowenergyposi0on(photon).

Toexplorethisproblem:ü  Simulatelowenergy(100MeV)positrontohitonawholepieceof

lead(20X0),inordertoseparatethephysicsprocessissueandthestructureissue

TWwindow:100ns

1,10,and1000ns

Thesameconclusionas100nsTWwindow

PVDISEnergyResolu0onStudy

Nofielde-beam:1.  θe=25o,30o,35oandφ=0οvertex=(0,0,10cm)

1.  allangles:θe=[22o,35o],andφ= [-180ο,180ο] vertex=(0,0,10cm)vertex_spread=(0.21,20)

E (GeV)2 3 4 5 6 7

Edep/E

0.01

0.02

0.03

0.04

0.05

0.06 / ndf 2χ 8.161 / 6Prob 0.2265p0 0.001662± 0.05383 p1 14.87± 0 p2 0.005046± 0.04843

/ ndf 2χ 8.161 / 6Prob 0.2265p0 0.001662± 0.05383 p1 14.87± 0 p2 0.005046± 0.04843

/ ndf 2χ 9.395 / 6Prob 0.1525p0 0.0004199± 0.04788 p1 0.003318± 0 p2 0.001543± 0.04852

/ ndf 2χ 9.395 / 6Prob 0.1525p0 0.0004199± 0.04788 p1 0.003318± 0 p2 0.001543± 0.04852

/ ndf 2χ 19.5 / 6Prob 0.003399p0 0.0004957± 0.06066 p1 0.006597±08 −1.409e− p2 0.001927± 0.05778

/ ndf 2χ 19.5 / 6Prob 0.003399p0 0.0004957± 0.06066 p1 0.006597±08 −1.409e− p2 0.001927± 0.05778

/ ndf 2χ 8.727 / 6Prob 0.1895p0 0.0004843± 0.0584 p1 0.008495±10 − 9.704ep2 0.001835± 0.05744

/ ndf 2χ 8.727 / 6Prob 0.1895p0 0.0004843± 0.0584 p1 0.008495±10 − 9.704ep2 0.001835± 0.05744

° nofield [22,35]°nofield 25 °nofield 30°nofield 35

EC Shower calibrated energy / E_toal

Allangles

θ=25o

θ=30o θ=35o

!0!

!+ !1 ! + !2

!!

E (GeV)2 3 4 5 6 7

Edep

/E

0.01

0.02

0.03

0.04

0.05

0.06 / ndf 2χ 8.161 / 6Prob 0.2265p0 0.001662± 0.05383 p1 14.87± 0 p2 0.005046± 0.04843

/ ndf 2χ 8.161 / 6Prob 0.2265p0 0.001662± 0.05383 p1 14.87± 0 p2 0.005046± 0.04843

/ ndf 2χ 9.395 / 6Prob 0.1525p0 0.0004199± 0.04788 p1 0.003318± 0 p2 0.001543± 0.04852

/ ndf 2χ 9.395 / 6Prob 0.1525p0 0.0004199± 0.04788 p1 0.003318± 0 p2 0.001543± 0.04852

/ ndf 2χ 19.5 / 6Prob 0.003399p0 0.0004957± 0.06066 p1 0.006597±08 −1.409e− p2 0.001927± 0.05778

/ ndf 2χ 19.5 / 6Prob 0.003399p0 0.0004957± 0.06066 p1 0.006597±08 −1.409e− p2 0.001927± 0.05778

/ ndf 2χ 8.727 / 6Prob 0.1895p0 0.0004843± 0.0584 p1 0.008495±10 − 9.704ep2 0.001835± 0.05744

/ ndf 2χ 8.727 / 6Prob 0.1895p0 0.0004843± 0.0584 p1 0.008495±10 − 9.704ep2 0.001835± 0.05744




/ ndf 2χ 371 / 121Prob 27− 3.48eConstant 8.6± 580.6 Mean 0.2± 454.7 Sigma 0.19± 20.35

totEdep(MeV)0 100 200 300 400 500 600 700 8000

100

200

300

400

500

600htotEdep_ec



ec



totEdep(MeV)100 200 300 400 500 600 700 8000

100

200

300

400

500

600 htotEdep_ecEntries 7717Mean 445.1RMS 54.58Underflow 0Overflow 0


ec

Allangleswithoutfield

Allangleswithfield

2GeVe-ECALenergydepositdistribu0on

σ/µ nofieldinfluence

WhyP2islargeforthesimula0onresult?Ø  Inordertocheckthisissue,theexperimental

testresultisneeded.

Ø  Fittheplotbyignoringthep2term.

E (GeV)2 3 4 5 6 7

Edep/E

0.01

0.02

0.03

0.04

0.05

0.06 / ndf 2χ 93.07 / 7Prob 17− 2.898ep0 05− 2.644e± 0.05896 p1 0.0009989±17 − 1.301e

/ ndf 2χ 93.07 / 7Prob 17− 2.898ep0 05− 2.644e± 0.05896 p1 0.0009989±17 − 1.301e

/ ndf 2χ 266.8 / 7

Prob 0p0 0.0001379± 0.05379 p1 0.0005699±17 − 1.301e

/ ndf 2χ 266.8 / 7

Prob 0p0 0.0001379± 0.05379 p1 0.0005699±17 − 1.301e

/ ndf 2χ 253.1 / 7Prob 0p0 0.0001661± 0.06734 p1 0.0007241±08 − 2.736e

/ ndf 2χ 253.1 / 7Prob 0p0 0.0001661± 0.06734 p1 0.0007241±08 − 2.736e

/ ndf 2χ 263.6 / 7Prob 0p0 0.0001625± 0.0652 p1 0.000684±15 − 5.197e

/ ndf 2χ 263.6 / 7Prob 0p0 0.0001625± 0.0652 p1 0.000684±15 − 5.197e


EC Shower calibrated energy / E_toalAllangles

θ=25o

θ=30o θ=35o

!0!

!+ !1 !

Theinfluenceofsupportstructure(2cmAl)onECALenergyresolu0onfromSOLID

GEMCsimula0on

2012.12.15

SOLIDECALStandAloneSimula0on

θe=[22o,35o]φ= [-180ο,180ο] vertex=(0,0,10cm)vertex_spread=(0.21,20)

E (GeV)2 3 4 5 6 7

Edep/E

0.02

0.025

0.03

0.035

0.04

0.045 / ndf 2χ 93.07 / 7

Prob 17− 2.898ep0 05− 2.644e± 0.05896 p1 0.0009989±17 − 1.301e

/ ndf 2χ 93.07 / 7Prob 17− 2.898ep0 05− 2.644e± 0.05896 p1 0.0009989±17 − 1.301e

/ ndf 2χ 65.18 / 7Prob 11− 1.385ep0 0.0001889± 0.05865 p1 0.001014±17 − 1.301e

/ ndf 2χ 65.18 / 7Prob 11− 1.385ep0 0.0001889± 0.05865 p1 0.001014±17 − 1.301e

° nofield [22,35]

no Al°nofield [22,35]


!0!

!+ !1 !

E (GeV)2 3 4 5 6 7

Edep/E

0.02

0.025

0.03

0.035

0.04

0.045 / ndf 2χ 8.161 / 6

Prob 0.2265p0 0.001662± 0.05383 p1 14.87± 0 p2 0.005046± 0.04843

/ ndf 2χ 8.161 / 6Prob 0.2265p0 0.001662± 0.05383 p1 14.87± 0 p2 0.005046± 0.04843

/ ndf 2χ 8.485 / 6Prob 0.2047p0 0.0009698± 0.05513 p1 8.94± 0 p2 0.003747± 0.03918

/ ndf 2χ 8.485 / 6Prob 0.2047p0 0.0009698± 0.05513 p1 8.94± 0 p2 0.003747± 0.03918

° nofield [22,35]

no Al°nofield [22,35]


!0!

!+ !1 ! + !2

!!

Anycommentsandsugges0ons?

Summary

² ForSoLIDPVDISconfigura0on:theECALenergyresolu0onbecomeworsebyincreasingthepolarangleofelectronbeam.

² Thefullpolaranglecoverage[22o,35o]energyresolu0onfromGEMCsimula0onislargerthanthePcDRresults

² From1GeVelectronbeamσΕ/Εcomparison,thepreshowerleadinfluencetheECALenergyresolu0onratherthansupportstructureandfield.

ecal energy resolu0on updates ! 0 2 1 · 6/1/2017 · !0! ⨁!1⨁!2! ecal energy resolu0on...

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