1. OPERA Stato dell’esperimento Run 2007
Stato CNGS e prospettive per il run 2008
OPERA CF&RC
Richieste Finanziarie
CSII Roma 5 Giugno 2008
Lucia Votano

2. OPERA Detector Today SM1 SM2 Detector at 05/29/2008:
Target (29 walls) +
Target Tracker (6.7m)2
Spectrometer:
XPC, HPT, RPC, magnet
BMS
Veto
Detector at 05/29/2008:
electronics fully instrumented and tested
Brick filling is in progress, bricks have already been inserted
88% target

3. Detector Filling

4. Problems in ventilation control units of the proton target
CNGS 2007 RUN
CNGS integrated intensity from Sept. 24th to Oct 20th 2007:
20/10/07
12/10/07
Comissioning
Physics
Problems in ventilation control units of the proton target
9/10/07
pot
59 : CNGS very stable at pot/day
Nominal intensity :
pot /yr (1yr=200 days)
5/10/07
pot

5. 2007 run :  Interactions in the Target
326 expected events in bricks
38 events registered during the CNGS run :
29 CC NC
p.o.t.
Brick handling, Film Processing, Scanning : first test on real
neutrino interactions

6. Event Location & Data analysis
Europe
Japan
All events
19 (15 CC, 4 NC)
19 (14 CC, 5 NC)
Events confirmed in the CSd 18
Events located in the bricks 14 10
Interactions in TT 1
CS-Brick mismatch
Analysis in progress 2 6
Not found
Wall Finding : > 95%
Brick Finding : 80% +- 7%
For 28 events out of 36,
analysis is almost completed
On this small sample
more data needed for a complete tuning

7. CS to brick: design accuracy in position and angle
Test-beam
 = 22 µm
 = 5 mrad

8. CS to brick connection for neutrino interactions
Data quality looks fine
 = 54 µm
 = 9 mrad
Systematical uncertainties (gap, marks, …) dominate

9. Scan-back accuracy
 = 4 µm
 = 2 mrad

10. Vertex analysis PRELIMINARY Kinematical reconstructed variables
Impact parameter
Multiplicity

11. Event
CC interaction / 9 prongs

12. Event 180400976 PRELIMINARY Hadronic re-interaction muon kink
Tracks TX TY
P GeV
IP (m) 1
0.026
-0.097 -
5.7 2
-0.024
0.019
>20
1.2 3
0.045
0.197
2.3 –
1.7 4
0.024
0.203
2.6 5
0.100
0.051
7.9 6
-0.047
0.199
2.9 7
0.073
0.152
8.8 8
0.085
0.254
10.3 9
0.074
0.201
4.6 10
0.114
0.010
9.0 11
0.132
-0.001
18.1
Event
kink
PRELIMINARY
Hadronic re-interaction mu
kink
muon
e-pair
Secondary Vertex
Daughter momentum =
kink = rad
Flight length = 5901 m (too long for )
PT = 59 MeV ( cut for charm ≥250 MeV)

13. Event
CC interaction / 4 prongs

14. Event 173520769 PRELIMINARY Tracks TX TY IP (m) 1 0.012 0.160 1.9 2
-0.739
0.095
4.7 3
-0.033
-0.060
6.3 4
-0.015
0.065
4.1
PRELIMINARY
E  1 : ~ 510 MeV
E  2 : ~ 260 MeV
  : 300 ± 20 mrad
compatible with 0  2  :
estimated 0 mass: 110 ± 30 MeV

15. Event
CC interaction / 10 prongs

16. Event 180718369 PRELIMINARY kink e.m.shower Secondary Vertex Tracks TXTY IP
(m)
Momentum
(GeV) 1
0.005
0.036
3.3 2
0.139
1.0
parent 3
0.002
0.064
6.6
>20.0 4
-0.021
7.1 5
-0.029
0.046
2.8
>8.4 6
-0.031
7.3 7
-0.076
0.068
4.2 8
-0.089
0.141
6.9 9
-0.183
0.106
5.4 10
-0.297
-0.143
19.2 11
-0.067
0.008 12
-0.069
16.8
Event
PRELIMINARY
kink
e.m.shower
First charm candidate
e.pair
e.pair
Secondary Vertex
Daughter momentum =
kink = rad
Flight length = 3247 m
PT = 796 MeV
PTMIN = 606 MeV (90% C.L.)

17. 2007 run: Interactions outside the Target
331 events passed the analysis cut
303 had been expected:
ratio similar to the one observed in 2006
CNGS operated
in the same conditions as in 2006 run
Muon vertical angle
Energy of the muon (RPC)

18. CNGS Electronics - underground
Layout of the ventilation control
Designated “radiation safe” areas for electronics
electronic equipment

26. CNGS schedule completion of the modification work OK - week 22 :
testing and commissioning
yesterday news: delay 1 week
- week 23 : test with low intensity proton beam
- week 24 : no SPS beam for physic
- week 25 : (16-22 June) setting up at 2 10**13 pot per extraction
-………Collecting data

28. 2008 run : expected statistics
Expected 2008 run
Nominal CNGS
Number of days
140
200
Super Cycle (sec.)
27.6
Circulating proton
2x2 1013
efficiency
80%
55%
Integrated pot
Total number of interactions
~ 2500
Tau candidate 10-3 eV2)
~ 1
~125 evts/week

30. brick (first emulsion)
Brick Preparation
CS-Analysis
x-ray markings for alignment  ~ 10 mm
connection of CS-doubletts and brick
search area is scanned for track with matching angle
x-ray machine
brick (first emulsion)
CS2
CS1
150 mm
Blackness of spot allows to identify the side of emulsion
Brick-Alignment
x-ray markings  ~ 40 mm
first film to film connection
film number identifier

31. LNGS: Development Facility
Line for the automated
emulsion development
5 chains ready
3 fully operatives
Full Rehersal before ‘08 run
Maximum rate:
~ 50 bricks/day
(16 hours)

33. European Scanning System
R&D on 20 cm2/h European Scanning System completed successfully (end 2004)
31 ESS distributed among 10 labs ( 23 ESS in 8 Italian labs ):
Bari, Bern, Bologna, Lngs, Lyon, Napoli, Padova, Salerno, Roma, LNF
Integrated in a online computers network :
including DB, manager , on line computation , plate changer …..

35. CF&RC Consuntivo 2007

36. CF&RC 2008

37. Richieste (K€):
MI Sblocco 172sj di cui 40 a Bari sono una tasca generale
Cons Sblocco 75sj INFN CF&RC ( 79 ancora da assegnare)
App Sblocco 50sj materiale spare per microscopi
Pendente richiesta 40 K€ per controller RPC