TUL vs NTuple Grouping

TUL vs NTuple GroupingTUL vs NTuple Grouping

Drift Chamber Tracking Drift Chamber Tracking

T.O.F Resolution StudyT.O.F Resolution Study

LNS Exp. Analysis by yokota

Kohsuke Yokota M1 Tohoku Univ.

HES meeting 08/05/09

B1

B4

TUL vs NTuple Grouping

■ Condition・ In LNS Exp. , We got TUL Grouping Output

( Grouping 1~8 ).So, we can compare TUL and NTuple Grouping.・ NTuple Grouping EFF. ( TUL Counts / NTuple

Counts )

Beam

Group 1 ( F1| F2| F3|F4) & (B1| B2| B3|B4)

Group 2 ( F1&B1) | (F1&B2).........

Group 3 ( F1| F2) & (B1| B2)

Group 4 ( F3| F4) & (B3| B4)

Group 5 ( F2| F3) & (B2| B3)

Group 6 ( F1 & B4) | ( F4 & B1)

Group 7 ( F2 & B1) | ( F3 & B2)

Group 8 ( F2 & B3) | ( F3 & B4)

F1

F4

D.C ( 2Layer )



■ Event distribution at Hodo Scope and D.C.

Ehodo distribution

0

10000

20000

30000

40000

50000

60000

70000

Ehodo_0Ehodo_1 Ehodo_2Ehodo_3

coun

ts ForwardBack

● Distribution @ Ehodo　・　相対的に中心はだいたい合っている。　・　 Grouping の結果とも Consistent.

● Distribution @ D.C.　・　相対的に D.C.Backward がかなり右に

ずれてしまっている。　・　 Backward に Offset をつけて、調整。 .


Drift Chamber Distribution

1

10

100

1000

10000

100000

Channel

Cou

nts Drift Chamber

ForwardDrift ChamberBack


■ NTuple Grouping Efficiency ( NTuple/TUL )

NTuple Grouping EFF.

0

20

40

60

80

100

120

ACC.

Group

1

Group

2

Group

3

Group

4

Group

5

Group

6

Group

7

Group

8

[%} Run173

Run167Run166


Group6 :: Bag Check

■ x vs TDC @ DC_Forward plane

@DC_Forward

HES meeting 08/05/09Drift Chamber Tracking

■ x vs TDC @ DC_Forward plane

@DC_Forward

HES meeting 08/05/09Drift Chamber Tracking

■ x vs xp @ Ehodo_Forward plane

Drift Chamber Tracking

RED : @Ehodo_Forward BLUE: @DC_Forward


• Trigger Counter 、 Ehodo 、の全ての組み合わせに対して Slewing Correction を施す。　（　 Slewing Correction は、二次関数を用いて行った。　）

• 誤差の伝播公式を用いて、それぞれのカウンターの時間分解能を　求める。

■ Procedure

Slewing Correction

・　 BIN を分割し Y 軸に Projection する。

・　 Fitting の対象には、 Entry 数が、　分割した際に平均以上ある点のみ。

・　 Fitting には二次関数の逆数を使用。

y = [ 0 ] * ( x – [ 1 ] )-2 + [ 3 ]

Timing Resolution Study


■ Slewing Correction ( ADC%TDC ) Ehodo_F2



■ Slewing Correction ( ADC%TDC ) Ehodo_F3



■ Slewing Correction ( ADC%TDC ) Ehodo_B2



■ Slewing Correction ( ADC%TDC ) Ehodo_B3



■ After Slewing Correction Ehodo_F3F4B3B4


Ehodo_F3 TOP and BOTTOM

Ehodo_F4 TOP and BOTTOM

Ehodo_B3 TOP and BOTTOM

Ehodo_B4 TOP and BOTTOM


■ After Slewing Correction ( ADC%TDC ) T1F,T1B



MY EYE POWER !!

!! 　細すぎ。。。

■ TOF Resolution for Trigger Counter


TOF_meanTOF_resolution(siguma)[psec]

TOF_resolution(siguma) error [psec]

8.08636 116.503167 1.217827


■ TOF Resolution for Trigger and Ehodo


Ehodo_Forward 2 Ehodo_Forward 3

Trigger Counter Forward

Trigger Counter Backward




Ehodo_Forward 6 Ehodo_Forward 7

Trigger Counter Forward

Trigger Counter Backward





　 TOF_meanTOF_resolution(siguma)[psec]

TOF_resolution(siguma) error [psec]

T1f+Ehf2 23.1957 116.800167 0.884225

T1f+Ehf3 7.78756 135.424833 1.461422

T1f+Ehb2 9.02133 112.030833 0.966782

T1f+Ehb3 21.6042 125.448167 1.491145

T1b+Ehf2 -3.14603 116.290167 0.989475

T1b+Ehf3 -1.60764 124.641333 1.267787

T1b+Ehb2 -1.72888 109.017 1.068598

T1b+Ehb3 -2.9888 117.311167 1.647235

Trigger Counter

8.08636 116.503167 1.217827

■ Timing Resolution for Trigger and Ehodo



Counter IDTiming Resolution sigma

[psec]

Ehodo_F2 82.44

Ehodo_F3 100.75

Ehodo_B2 73.7

Ehodo_B3 89.22

Trigger_FT 84.37 ( w/ Ehodo_B2 )

Trigger_BT 80.33 ( w/ Ehodo_B2 )

Documents

TUL vs NTuple Grouping