Transcript dir_rev_scin_cable[1].

MINERnA
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
NuMI
MINERvA Director Review
Optical Cables and Scintillator Extrusions
10 January 2005
1
Optical Cables and Scintillator Extrusions
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
MINERnA
Active detector elements
NuMI
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WLS (wavelength shifting) fibers in scintillator
Extruded triangular scintillator pieces 3.3cm by 1.7 cm
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ID - Active Target - triangular scintillators form a layer (128 triangles/layer)
Light sharing between adjacent strips gives position measurement
Extruded square scintillator pieces – 1.9 cm square
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OD - Side hadron calorimeter - 6 layers
10 January 2005
2
Optical Cables and Scintillator Extrusions
MINERnA
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
Active Detector Elements
NuMI
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WLS fiber – 1.2 mm, 175 ppm, s-35 multi-clad Kuraray fiber
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Same kind of fiber used CMS HCAL and CDF Preshower
» Slightly less flexible than the most flexible Kuraray fiber
» With attenuation length of more transparent fiber
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Readout one end – mirror the other end
Longest WLS fiber length – 3.5 m
Clear fiber in optical cables takes light to PMT box
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1.2 mm s-35 Kuraray multi-clad fiber
Length about 1.2 m OD -1.4 m ID
10 January 2005
3
Optical Cables and Scintillator Extrusions
MINERnA
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
Active Detector Elements
NuMI
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PMT Box
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Brings light from clear fiber cable to multi-channel PMT
The piece which consists of the optical connector and clear fibers we call
the ODU (optical decoder unit)
» Cable end connects to the clear cable
» Fiber end glued to PMT cookie
10 January 2005
4
Optical Cables and Scintillator Extrusions
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
MINERnA
DDK Optical Connectors and Cables
NuMI
Clip
Box
Ferrule
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3 Parts Ferrule, box, and clip – uses clip instead of pins and screws
Designed by DDK (now Fujikura) in conjunction with the CDF Plug Upgrade
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RMS of light transmission - 1% to 2% (connection – reconnection)
For CDF – holes for 0.83 mm, 0.9mm, and 1.0 mm fiber
Also used by FOCUS, D0, and STAR experiments
We will have DDK design new ferrule for 1.2 mm fiber – same clip and box
Optical Cables – MSU STAR method to make light tight
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For light tight - RTV boot on both ends with black tube surrounding the fiber
10 January 2005
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Optical Cables and Scintillator Extrusions
MINERnA
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
Physics Requirements
NuMI
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We require enough light to get a position resolution of 3 mm
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8 pe/layer (photo-electron /layer) from Monte Carlo program
» Per doublet for a MIP with perpendicular incidence
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To determine particle type from dE/dx
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8 pe/layer from Monte Carlo program
The position and dE/dx determination should be measured
directly rather than deriving them from the Monte Carlo
program with the # pe
Less than a few mm of warping of scintillator in xy direction
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Need to know position of scintillators
However, source scanning of layers will give this information
10 January 2005
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Optical Cables and Scintillator Extrusions
MINERnA
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
Vertical Slice Test I - # pe
NuMI
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#pe is measured with VST I
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First triangular extrusions from Lab 5 - NICADD/FNAL
Extruder
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However, the hole is oval and slightly oversize
» Highest light yield – fiber tight in hole
» 0.5 m long and painted with TiO2
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Minerva electronics and MINOS pmt (M64) in MINOS
PMT box
1.2 mm, 3.5 m, mirrored WLS fiber – mirror at
scintillator end
» Length simulates the worst case
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No clear 1 m cable in VST I
» must multiply the result by 0.75
10 January 2005
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Optical Cables and Scintillator Extrusions
MINERnA
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
VST I
NuMI
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#PE – 1 Layer of triangles
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10 pe – scaling the single pe peak
12 pe - inefficiency with /10 optical filter in connector
These agree well – average – 11 pe
Scale to 11*0.75(for cable)=8 pe/layer
10 January 2005
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Optical Cables and Scintillator Extrusions
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
MINERnA
Near Term Tests
NuMI
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VST II - measure position resolution directly
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Source R & D Tests
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10 January 2005
Jan – Feb 2005
All parts exists
Use next generation of extrusions
Measure position resolution
Compare light between the 3 layers to show dE/dx
resolution
Compare to Monte Carlo program
VST II is this decisive test
Illuminate a separate 5 triangles array with a source
Compare light between different configuration
Compare glue to no glue, etc.
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Optical Cables and Scintillator Extrusions
MINERnA
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
NICADD/FNAL Extruder
NuMI
 Extruded

scintillator much cheaper than cast scintillator
Can create unique shapes - MINERvA triangles
 FNAL group
experienced with extruded scintillator – MINOS, K2K
 Extruder is a collaboration between FNAL and NIU, owned by NIU
 Computer controlled
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 The
Regulate mixture of polystyrene pellets and dopants
Optimize temperature and extrusion speed
Extruder is the ideal size for MINERvA production
10 January 2005
Optical Cables and Scintillator Extrusions
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MINERnA
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
Extruder Dies
NuMI
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Two scintillator shapes – triangle and square
Triangular extrusion is more challenging shape
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Development of new die for square scintillator
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VST I – first die
Supported by FNAL, NIU, DOE-HEP through Rochester
Re-tune for making triangular extrusions for VST II
Expected to be easier
Co-extruder – coat scintillator extrusion with TiO2
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MINOS scintillator manufactored with coextruder
10 January 2005
11
Optical Cables and Scintillator Extrusions
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
MINERnA
Quality Control and Production
NuMI
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Production run tolerances for triangular shapes
Hole production and testing
10 January 2005
12
Optical Cables and Scintillator Extrusions
MINERnA
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
Fiber Procurement
NuMI

Purchase 57 km of clear fiber – Rochester Task
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QC – same procedure as CMS
» Use cable testing box to inject light to fibers
» Test 5 fibers in batch ( a fiber preform)
» QC tests done by Rochester physicist and a Rochester technician
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Purchase 119 km of WLS fiber – Rochester Task
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QC – Lab 6 automatic fiber scanner, UV lamp and pin diodes
» Not working now
» Could use manual setup in Muon Lab – source and PMT
» Measure 5 fibers from a batch
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Mirror fibers in Lab 7
» FNAL contribution budgeted in FNAL impact statement
» Lab 7 did this for CDF Plug, FOCUS, STAR ECAL, CMS HCAL, D0
» 3 steps – ice polishing sputtering and protecting the mirror
10 January 2005
13
Optical Cables and Scintillator Extrusions
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
MINERnA
Connector Procurement and Polishing
NuMI

DDK will design new ferrule for 1.2 mm fiber – initial QC
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Measure initial connectors with Avant Optical Gauge Comparator
» Coordinate measuring machine owned by Tech Support
» They will measure the position and angle of holes
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Measure RMS of the light of initial set of cables
Polishing at Lab 7
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Lab 7 has been polishing connectors for the last 10 years
» They have experience polishing these connectors - FOCUS
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DDK connectors have fiberglass which dulls the diamonds
» New diamonds or relapped diamonds after 40 connector polishes
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Lab 7 polishes 10 connectors at a time
» FNAL Lab 8 need to build fixture to hold the connectors
10 January 2005
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Optical Cables and Scintillator Extrusions
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
MINERnA
Optical Cables and ODU Assembly
NuMI
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ODUs – fibers-connector part used for the PMT box
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Cable construction same techniques and CDF and CMS
To make light tight – copy MSU STAR method
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Put RTV boot on both ends of cable
Can prototype existing DDK connectors for 1.0 mm fiber
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Like cable, but not made light tight
Fiber diameter doesn’t matter for test certain techniques
Test RTV light tight boot
Set up the production line
QC – Build quality control device
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Build light injection box – like CMS calibration box
Build box to take light in cables to pin diodes
Multi-channel pico-ammeter system readout out pin diodes
10 January 2005
15
Optical Cables and Scintillator Extrusions
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
MINERnA
Scintillation Extrusion Schedule
NuMI
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Schedule based on experience from extruder R & D
2 dies – 2 months of testing the tuning for each die
90 Days for production
People
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2 FNAL technicians
NIU Production Coordinator – 50% time
NIU Run Supervisor – 50% time
9 month after June 1 – March 2005
10 January 2005
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Optical Cables and Scintillator Extrusions
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
MINERnA
Schedule
NuMI
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WLS Fiber
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3 months to acquire WLS fiber 4 months to mirrors fiber – 4 technicians
June 2005 – Dec 2005
An Fall accelerator shutdown could effect this schedule
Optical Cables and ODUs
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3 months to acquire prototype ferrule
1 month to test
1 month acquire production connectors
1 Rochester R&D Technician – Finish Nov 2005
7.5months – 2404 ODUs – Rochester 4 techs – Finish Jun 2005
12 months - 4607 Cables – 6 techs - Finish Jun 2006
10 January 2005
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Optical Cables and Scintillator Extrusions
MINERnA
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
Cable Costs
NuMI
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As-real eng – as realized and engineering costs estimate
Exp as-real – direct extrapolation from as realized costs
Act as-real – actual as realized costs
Sim/exp as-real – direct/similar extrapolation from as realized costs
Cost +
Sub-category roll-ups
Contingency Cont
Cable/ODU Materials
optical cable tester M&S
$13,510 0.40
clear fiber (includes vendor shipping)
$231,203 0.59
mold and associated tools
$5,063 0.28
RTV
$7,187 0.31
black cable sheathing
$8,432 0.43
gluing tools
$2,880 0.20
epoxy and gluing consumables
$12,634 0.37
Category Total
$280,910 0.54
Cable/ODU Labor
optical cable tester EDIA, assembly
design of light tight RTV mold
Prototyping
Technicians in Factory
Category Total
10 January 2005
$8,720
$8,640
$47,400
$316,540
$381,300
0.40
0.20
0.30
0.60
0.54
Spare &
Waste
BoE Type
BoE Source
n/a
15% (37.5%)
4.5% (14.5%)
4.5% (14.5%)
4.5% (14.5%)
n/a
4.5% (16%)
as-real eng
vendor quote
exp as-real
exp as-real
exp as-real
as-realized cost
exp as-real
CMS Cal Box + quotes
Kuraray
MSU Star
MSU * , Ventor
MSU * , Ventor
CMS HCAL
CMS HCAL
n/a
n/a
n/a
4.5% (16%)
act as-real
act as-real
sim exp as-real
sim exp as-real
CMS Cal Box
MSU *
MSU *
MSU * + CMS HCAL
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Optical Cables and Scintillator Extrusions
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
MINERnA
Polishing and WLS Fiber Costs
NuMI
Sub-category roll-ups
Connector/Polish Materials
connector cost (incl. vendor design)
polishing diamond abrasive
relapping diamond abrasive
polishing consumables (bits, etc.)
Category Total
Cost +
Contingency Cont
Spare &
Waste
BoE Type
BoE Source
vendor quote
exp as-real
exp as-real
exp as-real
Fujikura quote
Lab 7 + CDF exper
Lab 7 + CDF exper
Lab 7 + CDF exper
$81,754
$24,640
$52,635
$5,926
$164,954
0.33
0.53
0.53
0.66
0.42
4.5%
4.5%
5.5%
6.5%
Scintillator Materials
Scintillator Dopants
Bulk polystyrene (Styron 663)
Category Total
$113,400
$95,505
$208,905
0.50
0.52
0.51
11.5% (17.5%) vendor quote
11.5% (17.5%) vendor quote
Kuraray
Single Batch
WLS Fiber Materials and Labor
fiber and vendor shipping
shipping from FNAL to VA factories
$471,735
$19,280
0.51
0.40
15% (37.5%) vendor quote
37.5% (37.5%) physicist quo
Kuraray Oct 04
Single shipping
Category Total
$491,015
0.51
10 January 2005
(16%)
(39%)
(39%)
(39%)
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Optical Cables and Scintillator Extrusions
MINERnA
Director’s Review
10 January 2005
H. Budd
Univ. of Rochester
MINERnA
Costs – Scintillator Extrusions
NuMI
Cost +
Contingency
Scintillator Extrusions Labor
Production Coordinator & Run Supervisor
$
Scintillator Extrusion Equipment and Materials
Co-extruder
Die and sizing tooling (4 diff. sets @ $12,000/ea.)
Scintillator Dopants
Bulk polystyrene (Styron 663)
Consumables (jars, tubing, labels, UV lamp,...)
Shipping
Machine shop
Carpenter shop (to build 28 crates)
10 January 2005
59,441
52,000
48,000
$113,400
$95,505
6,000
5,307
1,164
15,456
Cost +
Overhead Contingency Cont
1.28
1.00
1.00
1.00
1.00
1.28
1.28
1.28
1.28
Spare & Waste
Contingency
76,084.48
52000.00
48000.00
$113,400
$95,505
7680.00
6792.96
1489.92
19783.68
BoE Type
Exp as-real
vetdor quota + cont
sim/exp as-real
0.50 11.5% (17.5%) vendor quote
0.52 11.5% (17.5%) vendor quote
Exp as-real
physicist quote
BoE Source
Prototype of MINERvA strips
From prototype die
Kuraray
Single Batch
Ventor
vendor quote
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Optical Cables and Scintillator Extrusions