BCAL: we’re rolling out the barrel and having a barrel of fun! z. papandreou university of regina presented at the GlueX Collaboration Meeting, held at

BCAL: we’re rolling out the barrel and having a barrel of fun!

z. papandreouuniversity of reginapresented at the GlueX Collaboration Meeting, held at Jefferson Labjanuary 28, 2009

on behalf of the GlueX-Regina Team: J. Chan, B. Giesbrecht, K. Janzen, S. Katsaganis, D. Kolybaba, S. Krueger, B. Leverington, T. Li, G. Lolos, E. Plummer, A. Semenov, I. Semenova, Y. Sun, K. Vuthitanachot, Y. Yongzhe, A. Heinrichs, L. Sichello, A. Watson

overview

schedule & invoicing facilities, personnel, materials, document control fibres: QA testing matrix construction progress procedures transmission uniformity summary

Z. Papandreou & GlueX-Regina Team, GlueX Collaboration Meeting, January 25, 2010

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schedule & invoicing• Construction Prototype: signed May 6, 2009

• Planned completion date: September 25, 2009; actual October 23, 2009

• Production Modules: signed August 7, 2009

• Delivery dates:

• first 4: Feb 10, 2010

• now: April 10, 2010

• Project Progress

• Readiness review: JLab inspection/site visit to Regina (Nov 4)

• quality issues in Construction Prototype → build Module 01 alone

• Reporting: EVMS, bi-monthly

• Invoicing: is smoothing out

3Z. Papandreou & GlueX-Regina Team, GlueX Collaboration Meeting, January 25, 2010

facilities, personnel, materials, documents

Facilities Construction 1300 ft2 ; Fiber & Sensor QA 1100 ft2

Presses and Swager: operational Fibre sorting table: operational

Detector lab (two stations): operational Underground lab (overflow): operational New Storage (500 ft2): ready

• Personnel Construction Manager: Dan Kolybaba; officially on board October 1 Undergraduates:

full time/contract: 4x 12-month Engineering Industrial Interns, 1x Engineering CoOp, 2x 0.5 Physics = 6 (4 of them on construction and 2 on fibre QA), + one permanent staffer (recent B.Sc. graduate) for project’s duration

• Materials, Machining Incidentals, Consumables: weekly inventory and replenishment

Fibers: first 8 shipments clockwork; minor packaging and shipping issues resolved! Lead: first 2 (of 4) large shipment from Vulcan received, 3rd in early Feb, 4th in April - check quantity before 4th Epoxy: supply regular, contract in place Spare parts: in hand for everything except swager (JLab will handle)

RMS: 46 top plates + 8 base plates + 2 modules machined, contract will be put in place next week Crates: disposable, design is done, work on 1st crate starts today!

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Document Control Checklists: in place Hardcopy logbooks: in place E-log: operational, web access Excel Worksheets: implemented for

build stats, epoxy tracking, fibre tests Traveler docs: done Web site: password: operational Versioning system: in place Manual: written after 1st 4 modules


fibre QA tests• First Article: bench reference

• Production:

Condition/packaging (checklist, pictures)

Diameter, Spectral Response

Attenuation length: LED, photodiode current

Npe at 200cm: 90Sr, PMT, external trigger

•Contract Specifications:

Diameter: 1.00mm, RMS<2%

Attenuation length: >300cm, RMS<10%

Light output: >3 p.e., RMS<15%

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• Nearly 300,000 fibres on hand!• 30-40 fibres per day at each station• Goal is to test ~1% from each shipment


fibre spectral response

• qualitatively the spectra measured at Regina agree with the Kuraray data

• integrals are close, but shapes are different

• response is acceptable and scales by distance in a similar fashion

• spectra from production fibres have been acquired; they look nominal

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Kuraray brochure

Kuraray Batch JS072

Fibre K06-3


fibre attenuation length


... but fibres meet specs

Category A Category B

Noticeable lot-to-lot variationLarge Shipment-to-shipment change

1 2 3 4 5 6 7 2nd dye change

Kuraray and

Regina results

track each other

fibre light output


... but fibres meet specs

Small lot-to-lot variationSmall Shipment-to-shipment change

1 2 3 4 5 6 7

2nd dye change

Kuraray and

Regina results almost track

fibre attenuation-Npe correlation


• Shipments 1-6• Shipment 7

Npe at fibre’s end

Npe at fibre’s midpoint

simulated fibre performance spread

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• BCAL coordinates• attenuation accounted for• Poisson + Gauss

Negligible effect!

construction prototype

• Procedure changes (deliberate)

• Press adjustments, leveling

• Lunar lander feet

• No vaseline! →problems

• Poly sheet, foam rubber, fettuccine

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• Difficult, slow, errors made

• Proven: “surplus” lead/rolling

• Proven: swaging

• Proven: procedure changes

• Proven: press plate contact

Poly 0.006”, Rubber 1/8”Lunar Lander feet

Front edge

Back edge

2 mm

lessons learned• Building sensitive to amount of glue, lead shape and lead rolling• We have learned and overhauled procedures and re-trained!

• control glue, changed lead swaging, re-check before laying• use alignment posts, runner & wire• with the new lead, swaging and laying is going well• controlling gluing time and ram sequence

Prototype 2: Green-blue fibres

jumped lead layer

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dead fibres?

Remarkable build: height within 1mm everywhere!


• Alignment posts required press anchoring; this contributed to front/back height asymmetry

• Rubber foam also contributed to asymmetry

• Lunar lander feet did not help; they have been dropped

• Back to thicker (2” total) press plate

construction prototype matrix build - visually

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Side A/B colour Side A/B b/w

Blow up

Issues:•profile mismatch•jumped tracks•kink in lead sheet•Fix: patch•Fibre clean up

(Machined at RMS, Oct. 14-23; traveler docs provided)


kink

patc

h

faces - comparison

• ‘Ruler’ test: spectacularly poor!

• Effect resembles cross talk

• ‘Top 40’ layers good except at a few spots

• We believed we can do even better. JLab believed as well.

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Side A Side B


‘Beauty’ and the ‘Beast’

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CPMod 01

‘ora

ng

e b

an

ds’

BeautyBeast

‘orange bands’

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•... have been seen in• Prototype 2: BCF-20 fibres• CP: SCSF-78MJ fibres• Mod01: SCSF-78MJ fibres • Nothing remarkable about the Kuraray fibres: attenuation, Npe, spectral nominal• Pressing cannot cause this effect• Machining cannot either (vertical passes)• Gluing preparation appears nominal• It could be epoxy oxidation: will check wavelength under UV LED excitation

spectra

l

Np

eatte

nu

atio

n le

ng

th

optical transmission setup

• Objective: measure light transmission through finished modules, in order to test optical uniformity of each module

• Method: it is based on a 4 x 9 4cm2 grid, stable (few x 10-3), easy, fast, portable (use at RMS), and yields reproducible results

• Next: method has been applied to Construction Prototype and soon to Prototype 02 and Module 01

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• Light source: Winston Cone, UV LED, low voltage supply

• Readout: Winston Cone, photo-diode, picoammeter

• Aluminum mask with four sets of bolts to base plate, to allow for overlapping pattern coverage

optical transmission tests

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Construction Prototype

• Source: • UV LED (380 nm) at 3V (supply in constant current mode)• Light intensity at exit of Winston Cone is ~330 μA

• Measured by taping both WC together• Stable: change only in 3rd digit over 30 min

• Measurements with dry-dry, grease-dry, grease-grease contact:• grease necessary at input, makes small difference at output• Transmission throughput around 1/100 of incident light

construction - summary & proposal• matrix layup

• facilities are operational; two-press build started in January 2010• students are now fully trained: new, strict protocols• lead rolling and runner-post-wire alignment• careful placing of thick press plate plus high density polyethylene minus lunar feet• epoxy and ram sequence control• drawings are near final, travellers ditto

• transmission uniformity method finalized • fibres: within specs

• module progress:• Module 01: machined, transmission tests & traveller pending• Module 02: constructed, will be shipped to RMS for machining/transmission/traveller• Module 03: construction in progress (near layer 110)• Module 04: construction in progress (near layer 20)

• First four modules to JLab in early April

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Roll out the barrel, we'll have a barrel of fun Roll out the barrel, we've got the blues on the run Zing, boom, tararrel, ring out a song of good cheer Now's the time to roll the barrel, for the gang's all here

Beer Barrel Polka

available as ringtone

Documents

BCAL: we’re rolling out the barrel and having a barrel of fun! z. papandreou university of regina presented at the GlueX Collaboration Meeting, held at