a study of tracker resolution by satellite
DESCRIPTION
A study of tracker resolution by Satellite. 宮本彰也 2008 年 6 月 4 日 ACFA-SIM-J meeting. B dependence of s r j. B: 3 4T, s rf and Pt improves by 25% at High momentum. Geometry Dependence of D K. < Dk > is the avarage of Dk of three geometry results. Costh dependence. - PowerPoint PPT PresentationTRANSCRIPT
A study of tracker resolution by Satellite
宮本彰也2008 年 6 月 4 日
ACFA-SIM-J meeting
B dependence of r
2Akiya Miyamoto, KEK
2 2 20
22
/
1/
r d eff drift
d eff
C N L
C NB
B: 3 4T, rf and Pt improves by 25% at High momentum
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Geometry Dependence of K
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<> is the avarage of of three geometry results
Costh dependence
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Pt resolution at low momentum
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gldapr08 gldprim j4ldc
before TPC 3.235 3.235 3.232
TPC Inner Support 2.086 1.98 1.98
TPC Drift 1.337 1.132 1.024
Accum. 6.689 6.378 6.239
TPC Lever arm(cm) 154.05 130.5 118
1/(B√L) 0.02686 0.025011
0.023014
Material thickness in unit of radiation lngth (%)
0
1/
Xp p
BL X
when multiple scattering dominates
j4ldc would be about 15% better than gldapr08 at low momentum if fiited by TPC onlySatellite fitting uses TPC+IT+VTX. Difference would be smaller
From http://ilcphys.kek.jp/soft/geom2/geantino/ScanSummary.htm
Backup
Control of TPC spatial resolution
If $SATELLITESROOT/macros/S4Macros.C is used, TPC spatial resolution formula can be selected by S4TPC.SpatialResolution. = flat: constant in rphi and Z = experimental: formula implemented by Yamaguchi san = ILD or ILDAuto: ILD formulardescribed by the previous page.
If ILD, q1 term is not scaled by Bfield. ILDAuto is default( Scaled by B)
JSF parameter name and default values. They are defined in $SATELLITES/macros/S4Macros.C p1=S4TPC.Sig00 [ 0.005 ] p2=S4TPC.Sig0SinDep [0.090] q1=S4TPC.SigLDep [ 0.00053 ]
r1=S4TPC.SigmaZ [0.040]
S4TPCHit::SetXXXXX can be used to set parameters.
13Akiya Miyamoto, KEK
About TPC Resolution
Formula suggested by TPC experts: Ron and KeisukeRef) Mail to ild-detector-optimization mailing list, 22-Feb-2008
14Akiya Miyamoto, KEK
[Tesla] Field Solenoid :B
[cm] length drift
height) pad 6mm for
:
:
)sin/22/(25/(
(00053.01:sin/41
09002),(005.01sin21
22
2122
222
2
L
NCd
)cmqBqQ
(cm).pcmpppP
QLP
eff
/
r
)(008.02),(04.01:21 2/1222 cmrcmrLrrZ
Control of TPC spatial resolution
If $SATELLITESROOT/macros/S4Macros.C is used, TPC spatial resolution formula can be selected by S4TPC.SpatialResolution. = flat: constant in rphi and Z = experimental: formula implemented by Yamaguchi san = ILD or ILDAuto: ILD formulardescribed by the previous page.
If ILD, q1 term is not scaled by Bfield. ILDAuto is default( Scaled by B)
JSF parameter name and default values. They are defined in $SATELLITES/macros/S4Macros.C p1=S4TPC.Sig00 [ 0.005 ] p2=S4TPC.Sig0SinDep [0.090] q1=S4TPC.SigLDep [ 0.00053 ]
r1=S4TPC.SigmaZ [0.040]
S4TPCHit::SetXXXXX can be used to set parameters.
15Akiya Miyamoto, KEK