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HES HKS meeting. 7/Feb/2011 T.Gogami. 今日の朝ごはん @ Quark café. Contents. New event cut strategy (idea) Event display for HES side E01-011 data analysis ( トラ ぺには ないですが ) データサマリはありますか?. Current Pre-track cut with TOF counters. TDC cut Pattern recognition Space points - PowerPoint PPT Presentation
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HES HKS meeting7/Feb/2011
T.Gogami
今日の朝ごはん@ Quark café
Contents
• New event cut strategy (idea)• Event display for HES side• E01-011 data analysis (トラぺにはないですが )
–データサマリはありますか?
CurrentPre-track cut with TOF counters
1. TDC cut
2. Pattern recognition– Space points
3. Combination of space points– Pre-track– Check corresponding TOF counters with the pre-track
4. Tracking
CurrentPre-track cut with TOF counters
1. TDC cut– e- e+ backgrounds
• ADC and TDC of Cherenkovs and TOF walls• Hit selection with TOFs
2. Pattern recognition– Space points
3. Combination of space points– Pre-track– Check corresponding TOF counters with the pre-track
4. Tracking
Multiplicity of TOF1X and KDC1-1x
Multiplicity of KTOF1X is mostly 1~2
CH2 , 76314 52Cr , 77124
Event cut strategy
• This picture shows only x-layer• x’-layer can be also used
Can be cut
KDC1 KDC2KTOF1X
KTOF2X
Event cut strategyKDC1 KDC2
KTOF1XKTOF2X
• 5~6% of the KDC sensitive region (x-z plane)
2671.61664.5
1499.6
Width = 95.0Width = 75.072.859.4
1220.0
Event cut strategy
Can be cut before pattern recognition
HES event display
HES tracking• EDC1
– Trans– Pattern recognition– Pre link– Cleanup– Left right– Track fit
• EDC2– Trans– Pattern recognition– Left right– Track fit
• • • e_physics
Hit information in EDC1
Hit information in EDC2
• Tracking information• x,x’,y,y’ at Reference plane• EHODO
start
data
HES event display
HESdisp
HESdetectorsEDC
EDC1EDC2 data
ENGINE
dat file
EMACS• makedata.sh
Multiplicity in chambers
22nd Indian-summer school (SNP2010)
CH2 target 52Cr targetmean ~ 6 hit
Multi-hit TDC
mean ~ 2 hit
CH2 target 52Cr targetmean ~ 1 hitmean ~ 1 hit
106layer
6 layer6
HES
HKS
CH2
Event display for HES (CH2)
EDC1
EDC2EHODO1
EHODO2
Track direction
BLACK : Hit wiresBULE : Selected wires
Track direction
Event display for HES (CH2)
ENGINE -> dat -> dat’ -> display
EDC1
EDC2EHODO1
EHODO2
Track direction
BLACK : Hit wiresBULE : Selected wires
Track direction
There’s bug
Event display for HES (CH2)
EDC1
EDC2EHODO1
EHODO2
Track direction
BLACK : Hit wiresBULE : Selected wires
Track direction
52Cr
Event display for HES (52Cr)
EDC1
EDC2EHODO1
EHODO2
Track direction
BLACK : Hit wiresBULE : Selected wires
Track direction
Event display for HES (52Cr)
EDC1
EDC2EHODO1
EHODO2
Track direction
BLACK : Hit wiresBULE : Selected wires
Track direction
Event display for HES (52Cr)
EDC1
EDC2EHODO1
EHODO2
Track direction
BLACK : Hit wiresBULE : Selected wires
Track direction
Get Event display
1. Copy/home/gogami/makeEdisp.sh
2. Execute$ ./makeEdisp.sh
Sample data• 76314 : CH2
• 77124 : 52Cr
bug
Miscount of hit num. per layer
Run IDEvent ID
Total hit
Total hit
11 ? 9 ?
EDC1EDC2
EDC1
EDC1EDC2
EDC2
Haven’t fixed yet
Summary and To do• Summary
– New event cut strategy for HKS (idea)• With TOFs before pattern recognition
– Event display for HES• Cleaner than HKS (multiplicity is less than HKS)• Found a bug in HKS tracking
– Miscount of hit num. per layer in EDC2
• To do– Quantitative results of tracking for each target
• Efficiency– With GEANT , With real data
• Resolution• Rate , multiplicity
– Cut background event which comes from NMR port• Before pattern recognition
– New event cut routine– ADC and TDC correlation of Cherenkovs or TOFs
– E01-011
END
CEBAF center
タバコを吸う場所
Residence facility
元バスケットコート
ここに道が通りました。 他にも色々と変わりました。6Feb2011