tagger microscope construction update

Tagger MicroscopeConstruction Update

1

GlueX Collaboration MeetingJLab, Oct. 4-6, 2012

J. McIntyre, A. Barnes, R. Jones

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OutlineContract Status

Q.A. plan construction plan

Preparations for construction populating the construction space

Microscope electronicsadaptation for 50 micron pixel SiPMsscintillation yield with cosmic rays

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

3

Contract Status

Construction Plan Draft – Sept. 2012 ~ 50 page document Detailed instructions for construction Currently revising based on feedback

Copy location:https://docs.google.com/document/d/15OreBfdhb5mdpdXz6KMTVQt8ZWMU-4OV9i8Y6vp97Ms/edit

Quality Assurance & Acceptance Test Plan Draft – Sept. 2012 Currently revising based on feedback

Copy location:https://docs.google.com/document/d/1JL40gx7tPDDFu4aSiad3fTemAp0yiVBPI6D8FB5zb6o/

edit

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

4

Construction StatusContract timeline

Tagger Microscope t0 - October 2012 ???

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

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Construction StatusContract

timeline Active

Collimator

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

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Preparations for Construction

After

Before

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

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Populating the Construction AreaFiber Cutting

Station

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

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Populating the Construction AreaFiber Splicing

Station

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

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Populating the Construction AreaHeat Treating

Fibers

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

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Populating the Construction AreaHeat Treating

Fibers

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

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Populating the Construction AreaHeat Treating

Fibers

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

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Populating the Construction AreaFiber Testing

Station(inside a clean room)

Allows for testing of:

Single fibers Bundled fibers Cooling unit for

the electronics’ enclosure

Dark Box(main frame)

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

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Populating the Construction AreaStaging Areas &Work

StationsBundling Table

Heat Treating Station

Fiber Testing Station

(Clean Room)

Work Table (Clean

room)

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

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Populating the Construction AreaVentilation Unit

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

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Populating the Construction AreaAdditional

InfrastructureLighting &

OutletsBundle Storage

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

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Tagger Microscope ElectronicsExperimental setup

Current testing bench:• Dark chamber• NIM bin and modules• Can be used for all aspects of

quality assurance

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

Second testing bench:• New dark chamber• JLab FADC• Computer with CODA• Can be used for all aspects

of quality assurance

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Tagger Microscope ElectronicsElectronics changes

Change from 25 µm to 50 µm SiPM:

• Gain ~2.7x larger with 50 µm• Lowered amplifier gain to

compensate• Found 30% power reduction

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

Differences:• Increased 3 resistors while

keeping operating voltages the same

• Included parallel RC circuit to push low frequency gain ‘bump’ out of the operating range

50 µm25 µm

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Tagger Microscope ElectronicsFuture plans

• Engineering update of preamplifier, backplane, and control boards

• Submit design for fabrication and component population• Solder Eurocard connectors and SiPMs in lab• Perform basic board quality tests• Measure output pulse shape, gain, cross-talk• Run boards for an extended period of time to burn them

in

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

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Tagger Microscope Scintillation YieldBench Tests with Cosmic Rays

(from June mtg, 25 micron pixel SiPM)

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

pedestal tail

1pe = 5 channels

adc channels

single fiber readout with 250MHz FADCtrigger on the same channelonly tail of spectrum visible

from cosmic rate integral: median ~16pe130 pe / axial electron track

Tagger Microscope Scintillation YieldBench Tests with Cosmic Rays : update

(since June mtg, 50 micron pixel SiPM)

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

trigger

gain is re-balanced at 5chan/pixelcosmic yield: 30 pe (MP)

300 pe/axial electron track(specification is 220)

sum column 1

sum column 3

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Summary

Quality assurance & acceptance test plan being revised Construction plan written and being reviewed Infrastructure needed for construction is ~85% complete On track for readiness review (previously estimated - 11/2012) Scintillation yield with 50-micron pixel SiPM’s meets

requirements Electronics prototyping phase is completed Construction to begin as soon as contract is in place

GlueX Collaboration Meeting, JLabOctober 4-6, 2012

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Questions?

GlueX Collaboration Meeting, JLabOctober 4-6, 2012