# Presentation: 547719

**Status of Electron ID**
**                           **Yoon
-                                     25 Apr. 2006
-                                     DONUT meeting

## Reject penetrating track  

**Δθ****<****4****0**** ****mrad**
**Δ****r ****<****10****0  ********m**

**Δθ****<****20**** ****mrad**
**Δ****r ****<****30  ********m**

**Reject penetrating track****  **

**Reject**
**single **
**track****  **

**Step1**

**Step2**

**Step3**

**Step4**

## Criteria for Electron ID in ECC

**Criteria for Electron ID in ECC**

**(<****ν****E****>~****80GeV****)**

-  **(1)  Position difference ** **Δ****r****<****30  ********m**
** ****(2)  Angle difference****   Δθ****<****20 mrad**
** ****(3)  More than 2 segments tracks.**

**Position difference Δ**
**      ****Angle differenceΔθ**

## Criteria for Electron ID in ECC

**Criteria for Electron ID in ECC**

**(<****ν****E****>~****80GeV****)**

-  **(1)  Position difference ** **Δ****r****<****30  ********m**
** ****(2)  Angle difference****   Δθ****<****20**** ****mrad**
** ****(3)  More than 2 segments tracks.**

**Position difference Δ**
**      ****Angle differenceΔθ**

- Size:**600x600μm**
- From vertex to most downstream plate in ECC

-                                                                        **Step1  2   3    4**
- 2812 11606 50208   421   3625  -0.0345 -0.0566    **36    31   2    0**
- 2812 11606 50209   432   3580  -0.0662 -0.0296    **26    23   2    0**
- 2812 11606 50210   421   6274  -0.0839   0.0158    **11     9    2    0**
- 2812 11606 50211   421   3506  -0.1292   0.0235    **10     9    1    0**
- 2812 11606 50212   421   6321    0.0166 -0.0919     **0      0    0    0**
- 2812 11606 50213   421   3608    0.0559 -0.0108    **97    60  17   ****4**
- 2812 11606 50214   421   3573    0.0281 -0.1057    **30    25   5    ****1**
- 2812 11606 50201   421   1654    0.0675  0.0046     **61    35   6    ****1**
- 2812 11606 50202   421   3506    0.0863  0.0788     **31    30   8    0**
- 2812 11606 50203   421   3583    0.0222  0.0981     **19    16   3    0**
- 2812 11606 50204   422   6914    0.1246  0.0304     **23    22   1    0**
- 2812 11606 50205     0      0        0.0112  0.0282      **0     0    0    0   No trk id **
- 2812 11606 50206   421   3551    0.0568  0.0486     **34    24   4   **** 1**
- 2812 11606 50207     0      0        0.1617  0.0578      **0     0    0    0   No trk id **

**Result.mod1 (part)**

**         ****Step4**** / all 1ry trk  ****(no trk id )**
**Mod 1     ****32**** ****/ 116   ****  (41)**
**Mod 2     ****15**** ****/ 128****     (46)**
**Mod 3     ****31**** ****/ 113****     (28)**
**Mod 4     ****17**** ****/  73****      (23)**
**Mod 5       ****6**** ****/  42****      (14)**
**Mod 7     ****40**** ****/  154****     (35)**
**Mod 8       ****1**** ****/  24****      (12)**
**---------------------**
** ****Total    ****142**** ****/  650****    (199)**

**New Located  Events**** **

** ***** Old Located  Events – 53 Nu E CC**

- Among tracks with non-zero in step 4
- (142 tracks) ...
- Using 3D viewer,
- we will select the further candidate tracks of electrons
- after rejecting penetrated tracks and single tracks.
- Method:
- Comparing tracks with wider allowance of
- Δθ and Δr (0.02 rad, 100 m)
- And then Manual check  ...

**Next Step**