1. PEANUT summary @ Nagoya 2006/12/08 M. Komatsu

2. 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.

3. 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

4. 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

5. X-ray Generator X-ray mark exposure bench 1m Exposure time : 5 sec Angle : 4.8 degree

6. X-ray exposure @ Fermilab We brought X-ray exposure bench to Fermilab X-ray generator X-ray slit 50  m wide PEANUT brick X-ray slit

7. CS emulation (SFT matching) S-UTS(UTS unit) scanning –tan(  )<0.15, 100cm 2 x 2 film = 20hour –matched tracks are tagged in 2mm, 40mrad mm rad

8. Scanning using X-ray X-ray Brick Intersection of two planes (X-ray) defines a reference line in the Brick. Reference Point X-ray

9. Scan Back Result EventSelection category SFT matching at pl01-02SFT Matching at pl03 Scan Back Result Note dxdydtxdtydtxdty BL118-0082Multi-359.8-220.90.0034-0.0151-0.00780.0050Penetrated BL118-0092Multi28.0425.2-0.0054-0.01030.01250.0035Stop at pl45Neutrino Int. Cand. BL118-0344Multi-30.6-1409.80.01660.02950.0209-0.0194Penetrated BL118-0784Multi-1910.0364.7-0.01040.0050-0.02570.0182Penetrated BL118-1105Multi-285.2-195.90.0068-0.0015-0.01240.0129Stop at pl37Neutrino Int. Cand. BF021-0084Multi-529.61548.1-0.0198-0.0025-0.00400.0300Penetrated BF021-0093Kink320.41428.3-0.0028-0.0239-0.0144-0.0052PenetratedKink BF021-0138Kink206.5884.1-0.00060.00260.00180.0021PenetratedKink BF021-0283Multi166.1-71.5-0.0122-0.0116-0.00800.0120Penetrated BF021-0490Multi-725.3-23.0-0.0122-0.0003-0.01100.0100Penetrated Measured at pl02 1st 2nd Fukuda

10. Scan Back Result ( continued ) EventSelection category SFT matching at pl01-02SFT Matching at pl03 Scan Back Result Note dxdydtxdtydtxdty BL112-0224 BL112-0271 Multi-168.8 -1169.6 1398.3 -380.3 0.0284 -0.0234 0.0056 0.0077 -0.0256 0.0000 0.0157 0.0006 Penetrated same event BL112-0486Multi-298.1-156.60.00880.0001-0.01130.0191Penetrated BL112-0635Multi-370.0-816.40.00140.0039-0.01470.0113Stop at pl43Neutrino Int. Cand. BL112-0700Multi-652.1573.90.01340.0084-0.00190.0172Penetrated 3rd

11. SFT tagged event for trial BL118 S-UTS – SFT agreement  X=-285  m,  Y=196  m  x=6.8mrad,  y=-1.5mrad

12. Event BL118-0092 SB track Looking SFT hits, two tracks are exist. (-0.043, 0.028) =(#1,#0) SB track (-0.408,-0.449) =(#2,#1) 0 1 3 2 4 0 1 2 2(2,1) 0(0,1) 1(1,0 ) Pb 2nd 15/May/2006

13. Event BL112-0635 Looking SFT hits Surely interaction but too many hits. (0.123,0.048) =(#0,#1) SB track 0 2 SB track 1(0,2 ) Pb 3rd 17/May/2006

14. 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.

15. 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 plateRun Event VTX confirmation sample in this time We have another 8 stop tracks, not summarized in this slides

16. Process of Vertex confirmation ① Pick up stop Event ② General scan at stopped plate ③ Pick up partner track candidates ④ Virtual erasing ⑤ Parent search ← not yet tried in this report ⑥ Penetrate check ⑦ Follow down ⑧ SFT matching (only PEANUT)

17. 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

18. 47 193723 X projection Y projection U projection Scan back track

19. 64 78092 X projection Y projection U projection Scan back track Stop at pl24

20. 64 116018 X projection Y projection U projection Scan back track edge out at pl16

21. 65 17307 X projection Y projection U projection Scan back track

22. 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 (100cm 2 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 BF021)

23. BL040 PL1-2 Alignment in MINOS hallAlignment in Transportation 8 x 7 cm 2 SUTS scan

24. BL040 PL1-2 After virtual erase

25. BL040 PL1-2 Peak 2 Peak 1

26. BL040 PL1-2 Peak 1Peak 2