PEANUT meeting summary@ Fermilab

Giovanni and Komatsu

23/Jan./2007

Agenda1. NuMI - MINOS Short summary of NuMI-MINOS status ... Gina

2. PEANUT summary Situation of PEANUT analysis ... Komatsu European Scanning System(ESS) ... Giovanni SUTS status ... Komatsu 3. SFT based analysis PoT of PEANUT ... Gina Scanback result of BL040 ... Fukuda Time stumping for Emulsion tracks ... Nonoyama Activity in Naples ... Giovanni Summary of European lab analysis ... Giovanni

4. Non-bias analysis Full area scanning in Naples ... Giovanni SUTS scanning of BL118 ... Morishima NetScan for BL118 ... Komatsu

5. Discussion for paper 6. New exposure NuMI-MINERvA plan and schedule ... Vittorio Exposure plan

Gina reported about PoT of NuMI She will provide PoT corresponds to PEANUT exposure period.

Giovanni and Komatsu made a review ofScanning system we have.

Two main analysis scheme is reported,One is SFT based analysis and the otheris general scan.

Then we discussed work sharing betweenUS side and Japan and Europe side.

PEANUT period

Situation of PEANUT analysis• Before last December, works in each lab was

not synchronized.– We re-form PEANUT analysis working group to wo

rk for physics output.– Regular meeting (video link) is scheduled.

• We decided to do PEANUT analysis in OPERA frame work at least for all labs.– CS(PL2 and 2) scanning – Scanback

• First phase : SFT matching required• Second phase : All CS tracks

• Non-bias analysis, apart from OPERA

Scanning status in Europe

Giovanni De Lellis

University of Naples

Brick number

Brick wall

Lab Exposure days

Cosmic rays (h)

SFT alignment

SFT trigger

Emulsion-SFT position offset (resolution) μm

Emulsion-SFT angular offset (resolution) mrad

Scanning mode In progress

BL089 2 Bari 28 12 OK 3-D tracks 5310 (792), 3359 (735) 3 (17), 5 (15) prediction total scan

BL042 2 Bari 21 2 not yet general 37cm2 for 3 plates SFT alignment

BL091 2 Bari 28 12 not yet general 26cm2 for 3 plates SFT alignment

BL092 2 Bern 30 12 OK

BL034 1 Bologna 18 2 OK 9/20 planes 9072 (770), 1755 (890) 6 (8), 6 (9) general 80cm2 for 26 plates general scan

BL044 2 Bologna 21 2 OK general 30cm2 for 57 plates

BL088 2 Bologna 28 12 OK 9/20 planes 10564 (474), 3456 (566) 10 (7), 10 (10) general 80cm2 for 23 plates; scan-back from triplets (250)

total scan

Lyon

BL045 2 LNGS 20 2 not yet general: 16cm2 for 3 plates; 80cm2 for 2 plates; 16cm2 for 3 plates with new filter

SFT alignment

BL056 3 LNGS 21 12 not yet general 16cm2 for 2 plates SFT alignment

BL033 1 Naples 18 2 OK 9/20 planes -10555 (605), -2080 (443) -24. (5.), -3. (8.) general 48cm2 for 43 plates and 24cm2 for 57 plates

general

BL046 2 Naples 18 2 OK 7/20 planes -6830 (430), -4120 (430) -3. (6.), -3. (8.) general 100cm2 for 3 plates

BL054 3 Naples 21 12 not yet general 9cm2 for 7 plates (efficiency)

BL043 2 Neuchatel 21 2 not yet general 16cm2 for 18 plates scan-back from 3 first plates

volume scan - SFT alignement

BL081 1 Salerno 36 12 OK 3D Tracks -6164 (491), -3600 (482) -7. (7.), -7. (7.) General on 2 plates

BL082 1 Salerno 36 12 OK 3D Tracks -4237 (490), -3140 (484) -8. (7.), -13. (7.) General on 2 plates

BL047 2 Salerno 21 2 OK 3D Tracks -5700 (745), -1350 (465) -12. (5.), -9. (4.) General on 2 plates

Conclusion• 17 bricks under analysis in Europe (about 1000 events

expected)• Emulsion to SFT alignment performed for the majority of

them • The scan-back has been performed in a few bricks only• Different criteria have been used: SFT triggers, SFT-

emulsion matching and volume around the stopping point to be scanned (skewed, how many, etc..)

• Unification of all the cuts is ongoing: trigger conditions, SFT matching criteria and volume scanning standardized

• After a quick revision of the analysis, it will be possible to merge all the data

Time stamping for Emulsion Tracks with Gyaku Data Base method

070122

Y.Nonoyama

Residual of Emulsion track to hits ofdirectory below plane

• This showed residual.• extension emulsion track to below SFT plane.• Select tracks matching with SFT trigger as Rock Muon type by eyes.

y x x y2 3

mm

If matching is real, its residual will be into 500m.

mm

mm

mm

PL 43I.P. 1.5m

summary

• Now looking for good separation parameter.

• One is below SFT plane hits.• This selection power is very good.• Bud SFT link efficiency is effected by

SFT efficiency.• So, other selection parameter will be

needed for efficiency.

Reconstruction of neutrino interactions in PEANUT in general

scanning (unbiased) mode

Giovanni De Lellis on behalf of Andrea Russo

Naples University

Scanning areasAll 57 plateshave been

general scanned:

5.55 x 4.30 cm^2 = 23.9cm^2

General scanning mode

Measured density of aligned base-tracks: 4 base-track / mm2 (transportation order)

0.7 base-track / mm2 (assembly order)

38 plateshave been

general scanned:

11.1 x 4.30 cm^2 = 47.8 cm^2

Beam tracksat least 4 segments in the plots shown

NuMI beam peak(x, y-( ~ )50,0 )

mrad

MIP particles:<Grain number> ~ 24

Tracking efficiency

Density of aligned base-tracks ~ 0.7 / mm2

Expected number of events in the brick

Beam Begin End Duration (days)

NEUTRINO2005/10/20

16:252005/11/07 09:20 17.75

COSMIC2005/11/07

09:402005/11/07 11:40 0.08

Neutrino interaction ratein an iron target exposed to NuMI

in the near hall(2 * 105) / (year * ton)

43 ± 7 neutrino interactions expected in the analyzed volume

Nmes/total = 44 ± 9 neutrino interactions estimated from the 24 observed events after efficiency correction

This value (increased by 8%) accounts for the lead target

Conclusions• A volume of 413 cm3 (58% of the brick volume) was

general scanned in one PEANUT brick• Detailed single brick Monte Carlo simulation of PEANUT

used to define a procedure to identify neutrino interactions

• 24 neutrino interactions with SFT matching have been identified in the volume

• After the efficiency correction, we estimate (44 ± 9) neutrino interactions happening in the volume

• Good agreement with the number of expected events (43 ± 7) computed from the flux

• 8 events with larger multiplicity found without any match with the SFT (6 with 3 tracks, 1 with 4 and 1 with 9 tracks)

NetScan for BL118

PEANUT meeting @ Fermilab

22-23/Jan/2007

Possibility of non-bias analysis

• Naples already did full scanning for one brick.– Giovanni’s report

• Pilot analysis of BL118 NetScan is started.– 5x5 25cm2 area is scanned by SUTS

• Today I report first 21 plate data.

• We used base track for NetScan framework– For the first attempt.– How much we can reduce scanning power is next

subject.

Nagoya->Fermilab Fermilab->Nagoya

Pulse Height distribution

Nagoya->Fermilab Fermilab->Nagoya

Efficiency as a function of slope

Alignment in exposure• Virtual erasing is applied

– 3,530,479 base track remains for 21 plate.– Right table shows number of base tracks for

each plate.– Still large amount of junk base track is there.

• ECFSAL– 139,777 track (nseg>=2) are reconstructed.

• 128,015(2seg), 8,294 track (3seg)• 3,468 track (nseg>=4)

– Too large amount of nseg<=3• To reduce junk track, I applied 30mrad angular mu

ch for nseg<=3 tracks• Reduced to 37,125(2seg), 1,475(3seg)

66394 f001.001 100730 f002.001 335458 f003.001 232095 f004.001 286247 f005.001 404625 f006.001 314017 f007.001 172725 f008.001 110706 f009.001 100512 f010.001 85604 f011.001 106800 f012.001 116955 f013.001 137667 f014.001 119846 f015.001 142189 f016.001 127642 f017.001 135839 f018.001 141562 f019.001 126336 f020.001 166530 f021.0013530479 total

4 segment or more track

Eff. As a function of slope Eff. As a function of plate

Preliminary vertex hunting• ECVTXA is used for preliminary vertex hunting.

11 6 0 -56561.9 76531.2 -20969.1

151 5941653 9 141 7118239 5 1.8 -7.2 -46.6 -1149.9 7.03 0.1931 141 7070732 7 151 5941653 9 -7.1 -12.1 27.9 -1075.3 12.83 0.1179 151 5941653 9 151 5981499 7 -3.2 4.7 -26.7 -1129.9 0.98 0.2085 141 7070732 7 151 5981482 6 1.7 -7.2 -0.2 -1103.5 13.39 0.2461 151 5941653 9 151 5981482 6 -2.2 5.6 -32.9 -1136.2 1.99 0.1440 151 5981482 6 151 5981499 7 -1.9 4.5 -6.6 -1109.9 0.05 0.0767 141 7118239 5 151 5981482 6 -1.0 -5.3 53.4 -1049.9 8.63 0.0695 151 5979255 6 151 5981499 7 -5.0 2.3 -4.3 -1107.6 7.78 0.4589 151 5979255 6 151 5981482 6 -4.7 1.7 -2.2 -1105.5 7.52 0.4606 151 5941653 9 151 5979255 6 -7.2 1.4 -4.3 -1107.5 3.24 0.5722 141 7070732 7 141 7118239 5 4.5 -14.9 -35.0 -2370.3 8.35 0.3018 151 5941653 9 9 6 0 -56719.7 76458.9 -19865.9 -0.1384 -0.0688 -1103.2 6.01 0.0056 141 7118239 5 8 7 0 -56435.4 76458.8 -18633.8 0.0521 -0.0259 -2335.4 15.32 0.0052 141 7070732 7 8 7 0 -57120.7 76205.2 -18633.8 -0.2309 -0.1333 -2335.4 23.83 0.0036 151 5981499 7 7 6 2 -56485.4 76495.1 -19865.9 0.0633 -0.0351 -1103.2 6.57 0.0065 151 5981482 6 7 6 2 -56555.2 76446.0 -19865.9 0.0066 -0.0814 -1103.2 4.56 0.0056 151 5979255 6 7 3 8 -56189.2 76008.7 -19865.9 0.3437 -0.4720 -1103.2 7.64 0.0010 3 3 0 -68817.8 47444.7 -22457.2 161 5359881 14 151 2935076 4 1.9 -3.9 2.5 -1388.3 4.33 0.2893 161 5359426 7 151 2935076 4 2.2 -9.6 -25.2 -1416.0 14.66 0.0634 161 5359881 14 161 5359426 7 -0.4 0.7 -10.7 -1401.6 0.21 0.2969 161 5359881 14 16 5 0 -68562.0 47525.6 -21066.4 0.1840 0.0556 -1390.8 3.70 0.0005 151 2935076 4 4 6 11 -69042.4 47305.5 -19865.9 -0.0876 -0.0519 -2591.3 5.53 0.0008 161 5359426 7 10 5 6 -68908.7 47288.0 -21066.4 -0.0652 -0.1134 -1390.8 0.44 0.0010

Another 23 two track vertex IP<20 is exist.Local alignment is not done.

Summary• Apart from OPERA, NetScan is good method

to perform non-bias neutrino interaction analysis.– Especially for electron neutrino location.

• NetScan with SUTS is feasible.– But, currently noise track density is bit too high to

do clean analysis.SUTS scanning should be well tuned.

– Also, cut applied for base track is too tight.Should be revised.

Discussion for paper• We agree on two types of output

– SFT track based scanback.– General scan to detect electron neutrino flux.

• US provide PoT and SFT-MINOS matching information soon.– Komatsu (Luca) provide list of SFT 3D tracks.

Already sub-sample matching has done in year ago.

• One target date to make summary is mid April (MINOS-meeting is scheduled)

Location of MINERvA

Schedule of various MINERA detectors…

2007 2008 2009 2010

Final Construction

Testbeam Detector

Tracking Prot

Full Module

Construction (1st Unit)

Cosmic/Source

Beam

Calibration DB

Slow Controls, Monitoring

Core Reconstruction Software

Neutrino Beam Simulations,

Measurements

Detector Simulation“Real”

DAQ

(From December 2006 Minera collaboration meeting)

Possibility of new exposure

• There is interference between PEANUT and MINERvA.– MINERvA installation will start on end of 2007– Summer shutdown is foreseen in June or July.– PEANUT detector should move to somewhere before

MINERvA installation start.

• Komatsu propose possible configuration for new exposure with lighter brick (not OPERA brick).– T952 second run needs some paper works to be appr

oved.