1. Alan Bross 6th Plenary Meeting of the IDS-NF
Detector Baseline
Alan Bross
6th Plenary Meeting of the IDS-NF

2. Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010
Detector Baseline
MIND is the baseline
Better En threshold turn-on
Done for idealized dipole field, however
Required R&D is well defined
Scintillator
Existing Technology OK
Photodetector
SiPM
Magnet
SCTL
Inputs for costing well understood
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

3. Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010
MIND
100 kT Fiducial Mass
15m X 15m plates
3 cm thick Iron
X-Y dual readout per plan (2 cm scintillator)
0.8 mm WLS fiber readout
SiPM photo-detector
Approximately 1.1M channels
100 kA-turn excitation current for B
Plate color – Chartreuse
Coffee Machine – Black & White
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

4. Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010
MIND - Latest Results
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

5. MIND - Latest Results II
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

6. Caveat: Current MC studies use Uniform Dipole Field

7. Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010
MINOS vs MIND
Differences
Real toroidal field in MINOS
What you see is what you got
Algorithmic
Event efficiency vs. bkg rejection
MINOS approach not optimized for NF case
Nevertheless
MINOS is now looking very closely at m charge mis-ID (n vs nbar data)
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

8. At Face value MINOS is not getting nearly the mis-ID rate we need
m charge ID in MINOS
From Patricia Vahle’s talk at Neutrino 2010
Anti neutrino selection & backgrounds
At Face value MINOS is not getting
nearly the mis-ID rate we need
(or see in the MIND
Simulation)
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

9. Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010
MINOS ND Low E
Masaki Ishitsuka
NuFact08
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

10. Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010
MINOS
According to Patricia Vahle, 3.4% of nm feed into anti nm data
Averaged over all energies
Problems
Short tracks
MCS
Confusion from hadronic part of event
This is 10X worse than what is required in MIND
Can we do as well as we claim in a realistic environment?
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

11. Toroidal Field in MIND

12. Semi-Realistic Field - Toroidal
Field map for 92kA
excitation on 15m plate
MINOS – 15kA
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

13. Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010
Field Excitation
Back to the Future
Superconducting Transmission Line:
$$ /m ($100k)
0.1W/m (20W)
100 kA-Turn
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

14. Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010
The Big “M” of MIND
So, it appears that an acceptable toroidal field can be obtained with 15m plates
Requires SCTL
But this also gives very small hole (10 cm) compared to MINOS that is essentially empty
However
In order to really fully understand MIND’s performance, the MC must be done with realistic fields
Requires engineering design for plates in order to get realistic toroidal field, not idealised
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

15. Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010
Big Plates
Present Big Problems
Enormous floor loading
Large (much too large) stresses if hung
Plate buckling
Out of plane issues
Fabrication
Welded up from many 2m strips
Fabrication/installation in mine with a shaft is ugly
“Keep Head Out of Shaft”
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

16. Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010
MINOS Plate
Far Detector
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

17. MINOS Plate – FEA Analysis
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

18. MINOS Plates – Structural Rigidity
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

19. MINOS Plate – Out of Plane Distortions
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

20. Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010
MIND & 15m Plates
There are significant mechanical engineering issues with a 15 m plate
Most of the support approaches used in MINOS are not acceptable
For example, with 2” plates a bolt pattern on 3m centers would be needed
Floor loading requires bedrock or an enormous foundation for a surface building
200’ wide
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

21. Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010
2-MINOS Solution?
Twice the channel count
SCTL
Of course, you can just make a MINOS with a length that gives 100 kT
Fiducial Mass, or a combination – slightly larger plate (11m?)
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

22. Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010
Readout
Extruded scintillator
WLS fiber
SiPM readout
Possibly double-ended
This is in very good shape
Required R&D already underway
3 cm
1.5 cm
15 m
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

23. Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010
Moving Forward
Analysis and simulations:
Improve digitization and optimize geometry
Add toroidal field
Move to GENIE for neutrino interactions
Improve hadronic reconstruction: energy and angular resolution
Add nt signal to oscillation signal
Final sensitivity plots and systematic errors
R&D effort:
Prototype detectors with SiPM and extruded scintillator
Measure charge mis-ID rate
Develop CERN test beam for neutrino detector R&D – European AIDA proposal to make H8 into low E beam
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

24. COSTING

25. MINOS Cost Plan Remember – 5.4 kT
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

26. MIND WBS 6th IDS-NF RAL, 22 September 2010 Num Item Cost (k$) % 1
Magnets: steel and coils
36.8
1.1
Steel plane fabrication
31.1
1.2
Steel handling fixtures
1.9
1.3
Support structures
0.7
1.4
Magnet coil
0.1
1.5
Detector plane prototypes
2.5
1.6
Steel management
0.6 2
Scintillator detector fabrication
32.9
2.1
Scintillator strips
7.2
2.2
Fibre
5.6
2.3
Scintillator modules
2.4
Photodetectors
Multiplex boxes and connectors
3.2
2.6
Calibration systems
2.7
Assay and test equipment
0.3
2.8
Factories
2.9
Scintillator management
0.5
Num
Item
Cost MIND (k$) % 3
Electronics and DAQ
7.9
3.1
Front ends
4.8
3.2
Hubs and interface crate
1.8
3.3
Central system and trigger farm
0.3
3.4
Data acquisition
0.6
3.5
Database
0.5
3.6
Auxiliary systems
0.2
3.7
Electronics management
0.1 4
Installation
21.6
4.1
Infrastructure
18.6
4.2
Materials receiving and handling
0.8
4.3
Detector assembly
2.1
4.4
Alignment and survey 5
Project management
5.1
Salary support
0.7
5.2
Travel support
Total
100
6th IDS-NF
RAL, 22 September 2010

27. Extrapolating from MINOS Project Plan to 100 kT MIND
Multiplier for Double MINOS
Steel + Plate Fab
125 1
1k$/metric Ton
Scintillator 35
Dual X-Y Readout PD 20 2 40
Fiber
Module Fab
1.5
52.5
Electronics 10
Coil 3
Fixturing
Factory Outrigging
Detector R&D 5
Cavern
150
Installation
Project support
1.2
Total v. Fid. Mass
Total
699.6
756.6
With escalation
909.48
» (1.04)7
983.58
Millions $
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010

28. Near Detector(s)

29. Near Detector No near detector baseline design yet, but ….
Near detector needs to have a leptonic TASD like detector with high granularity, a vertex detector for charm measurement and a MIND-like detector for flux extrapolation and muon momentum measurement
Assume these dimensions for costing
n beam
3 m
B=1 T
~20 m
Mini-TASD
95 t
Mini-MIND
460 t
Vertex
Detector
6th IDS-NF
RAL, 22 September 2010

30. Near Detector 6th IDS-NF RAL, 22 September 2010 Num Item Cost (k€) % 1
Mini-MIND
11.1
1.1
Steel plane fabrication MIND
2.3
1.2
Scintillator MIND
1.0
1.3
Fibre MIND
0.7
1.4
SIPM MIND
4.7
1.5
Electronics MIND
2.4
1.6
Coil Mind
0.1 2
Mini-TASD
41.4
2.1
Scintillator TASD
2.6
2.2
Fibre TASD
3.5
SiPM TASD
23.5
Electronics TASD
11.8
Coil 3
Silicon vertex
31.4
3.1
Silicon
26.2
3.2
Silicon electronics
5.2 4
Computing
1400
5.5
4.1
Central system and trigger farm
3.9
4.2
Data acquisition
0.8
4.3
Database
Installation
11.4
Infrastructure
7.8
Materials receiving and handling
1.6
Detector assembly
4.4
Alignment and survey
0.4 5
Project management
4.7
5.1
Salary support
5.2
Travel support
Total
100.0
6th IDS-NF
RAL, 22 September 2010

31. Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010
Conclusions
Overall
Baseline detector design in good shape
Too many options for NDs at the moment, however
Convergence on a detailed design will involve
Engineering to the point that produces a detailed plate design and B field configuration
Additional simulation work with realistic plate and B
Note: The MINOS plates are a complicated mosaic of many pieces welded together and this affects B. Final simulations took all this into account
Bigger will be even more complicated
Possible iteration
“Double-MINOS” or a “little-bigger” MINOS approach is worth looking into
Eliminates much of the ME R&D
Some price in Fid Mass/Total Mass
Near Detector “Baseline” will have Options for now
Alan Bross IDS-NF Plenary Meeting - RAL September 22, 2010