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

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

  7. CS emulation (SFT matching) • S-UTS(UTS unit) scanning • tan(q)<0.15, 100cm2 x 2 film = 20hour • matched tracks are tagged in 2mm, 40mrad rad mm rad mm

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

  9. 2nd Scan Back Result 1st Fukuda Measured at pl02

  10. Scan Back Result ( continued ) 3rd

  11. SFT tagged event for trial BL118 S-UTS – SFT agreement dX=-285mm, dY=196mm dqx=6.8mrad, dqy=-1.5mrad

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

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

  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) Run Event Stopped plate 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 VTX confirmation sample in this time Interaction in emulsion layer We have another 8 stop tracks, not summarized in this slides

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

  17. 78 94019 Stop at pl06 Scan back track X projection U projection edge out at pl16 edge out at pl15 Stop at pl06 Y projection

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

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

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

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

  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 (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 BF021)

  23. BL040 PL1-2 8 x 7 cm2 SUTS scan Alignment in MINOS hall Alignment in Transportation

  24. BL040 PL1-2 After virtual erase

  25. BL040 PL1-2 Peak 2 Peak 1

  26. BL040 PL1-2 Peak 1 Peak 2