PEANUT summary @ Nagoya

2006/12/08

M. Komatsu

Scanning trials• Feb. 2006 : BL039,040,041,050,052,060

– PL1 and 2 scanned with S-UTS prototype. – SFT matching has done. But we faced alignment problem by

corner for Scan Back with plate changer system.

• March 2006 : BL112,118,BF021– PL1 and 2 scanned with S-UTS prototype as same as previous

trial.– X-ray mark alignment perfectly work!

• Special thanks to Gina and Byron

• June, July 2006 : SFT prediction by UTS scanning– PL1 and 2 was scanned based on SFT predictions.– S-UTS was not available due to fabrication of new track

recognition hardware.

March trial• X-ray guided alignment

• S-UTS scanning with limited angular acceptance <0.15

• SFT matching has done– BL118 = 799 tracks, BL112 = 506 tracks and

BF021 = 402 tracks– Select interesting events by SFT eye check.

• 14 triggers and 15 tracks selected.

– 3 neutrino interactions located

PEANUT BL118 history• @Fermilab

– Brick assemble : Nov./25/2005– Beam exposure : Nov./25/2005-Feb./28/2006– X-ray marking : Mar./15/2006– De-packing : Mar./16/2006

• @Nagoya– Arrival from Fermilab : Mar./20/2006– Develop : Mar./20/2006– Doublet film scan : Mar./21 (20hour by S-UTS)– CS emulation by SFT matching : Mar./22– Track follow trial : Mar./22– Location trial : Mar./23

X-ray Generator

X-ray mark exposure bench

1m

Exposure time : 5 secAngle : 4.8 degree

X-ray exposure @ Fermilab• We brought X-ray exposure bench to Fermilab

X-ray generator

X-ray slit 50m wide

PEANUT brick

X-ray slit

CS emulation (SFT matching)• S-UTS(UTS unit) scanning

– tan()<0.15, 100cm2 x 2 film = 20hour– matched tracks are tagged in 2mm, 40mrad

mm

mm

rad

rad

Scanning using X-ray

X-ray

Brick Intersection of two planes (X-ray) defines a reference line in the Brick.

Reference PointReference Point

X-ray

Scan Back ResultEvent Selectio

ncategory

SFT matching at pl01-02 SFT Matchingat pl03

Scan BackResult

Note

dx dy dtx dty dtx dty

BL118-0082

Multi -359.8 -220.9 0.0034 -0.0151 -0.0078

0.0050 Penetrated

BL118-0092

Multi 28.0 425.2 -0.0054 -0.0103 0.0125 0.0035 Stop at pl45 Neutrino Int. Cand.

BL118-0344

Multi -30.6 -1409.8

0.0166 0.0295 0.0209 -0.0194

Penetrated

BL118-0784

Multi -1910.0

364.7 -0.0104 0.0050 -0.0257

0.0182 Penetrated

BL118-1105

Multi -285.2 -195.9 0.0068 -0.0015 -0.0124

0.0129 Stop at pl37 Neutrino Int. Cand.

BF021-0084

Multi -529.6 1548.1 -0.0198 -0.0025 -0.0040

0.0300 Penetrated

BF021-0093

Kink 320.4 1428.3 -0.0028 -0.0239 -0.0144

-0.0052

Penetrated Kink

BF021-0138

Kink 206.5 884.1 -0.0006 0.0026 0.0018 0.0021 Penetrated Kink

BF021-0283

Multi 166.1 -71.5 -0.0122 -0.0116 -0.0080

0.0120 Penetrated

BF021-0490

Multi -725.3 -23.0 -0.0122 -0.0003 -0.0110

0.0100 Penetrated

Measured at pl02

1st

2nd

Fukuda

Scan Back Result ( continued )

Event Selectioncategory

SFT matching at pl01-02 SFT Matchingat pl03

Scan BackResult

Note

dx dy dtx dty dtx dty

BL112-0224BL112-0271

Multi -168.8-1169.6

1398.3-380.3

0.0284-0.0234

0.00560.0077

-0.02560.0000

0.01570.0006

PenetratedPenetrated

same event

BL112-0486

Multi -298.1 -156.6 0.0088 0.0001 -0.0113

0.0191 Penetrated

BL112-0635

Multi -370.0 -816.4 0.0014 0.0039 -0.0147

0.0113 Stop at pl43 Neutrino Int. Cand.

BL112-0700

Multi -652.1 573.9 0.0134 0.0084 -0.0019

0.0172 Penetrated

3rd

SFT tagged event for trial

BL118

S-UTS – SFT agreementX=-285m, Y=196mx=6.8mrad, y=-1.5mrad

Event BL118-0092

SB track

SB track

SB track

Looking SFT hits , two tracks are exist.(-0.043, 0.028) =(#1,#0) SB track(-0.408,-0.449) =(#2,#1)

01

324

0

12

2(2,1)

0(0,1)1(1,0)Pb

Pb

2nd 15/May/2006

Event BL112-0635

Looking SFT hits Surely interaction but too many hits. (0.123,0.048) =(#0,#1) SB track

0

2

SB track

SB track

1(0,2)Pb

Pb

3rd 17/May/2006

SFT based UTS trial• BL118

– 428 tracks are selected for UTS scanning.• Require multi 3D tracks trigger.

– 124 tracks found by UTS.– 50 triggers are selected by SFT eye check.

• Plate changer based scan back was applied for 50 candidate tracks– 18 tracks stopped in BL118 brick.

• These are sent to vertex confirmation process.

Stop Event list (06,7/4)

BL112 78 94019 pl43 BL118 47 193723 pl45 BL118 64 78092 pl37 BL118 64 116018 pl26 BL118 65 17307 pl23 BL118 66 16200 pl16 BL118 74 2872 pl37 BL118 77 116741 pl14 BL118 62 64681 pl06 BL118 70 45922 pl23

Interaction in emulsion layer

Stopped plate Run Event

VTX confirmationsample in this time

We have another 8 stop tracks, not summarized in this slides

Process of Vertex confirmation

① 　 Pick up stop Event② 　 General scan at stopped plate③ 　 Pick up partner track candidates④ 　 Virtual erasing⑤ 　 Parent search ← not yet tried in this report⑥ 　 Penetrate check⑦ 　 Follow down⑧ 　 SFT matching (only PEANUT)

78 94019

X projection

Y projection

U projection

Stop at pl06

edge out at pl16

Stop at pl06

edge out at pl15

Scan back track

47 193723

X projection

Y projection

U projection

Scan back track

64 78092

X projection

Y projection

U projection

Scan back track

Stop at pl24

Stop at pl24

64 116018

X projection

Y projection

U projection

Scan back track

edge out at pl16

edge out at pl16

65 17307

X projection

Y projection

U projection

Scan back track

Summary• Limited angle scan < 0.15 (Feb. 2006)

– BL039,040,041,050,052,060– Brick-SFT matching performed

• Limited angle scan < 0.15 (Mar. 2006)– BL112,118,BF021 (100cm2 scan)– 15 trk(14 trigger) selected by SFT eye check– 3 interactions and 2 kinks confirmed in bricks

• UTS based predicted scan (June,July 2006)– BL112,118– Multi 3D track triggers for UTS scanning( CHORUS like ).

• 124 tracks found and 50 tracks are selected by SFT eye check to follow up by Plate Changer System.

– 5 confirmed(Multi track) int. and 12 stops.

• Full angle scanning with SUTS (Oct. -> ) – BL040,BL052,BL064,BF021– Under study. (Pilot scan back, 1 multi track event is seen in BF02

1)

BL040 PL1-2

Alignment in MINOS hall Alignment in Transportation

8 x 7 cm2 SUTS scan

BL040 PL1-2After virtual erase

BL040 PL1-2

Peak 2

Peak 1

BL040 PL1-2

Peak 1 Peak 2