nino cards and bigbite timing hodoscope update · r. montgomery, sbs meeting, 14/07/17 10 pmts and...

Rachel Montgomery, John Annand SBS Winter Collaboration Meeting

23/02/18

1

NINO Cards and BigBite Timing Hodoscope Update

R. Montgomery, SBS Meeting, 23/02/18 2

NINO Front End Cards


NINO FE Cards

NINO

NINO

16 Inputs

Amplifier Outputs

LVDS Outputs

OR-8 Out

Internal/External Threshold Jumper

External Threshold LV

Internal Threshold Adjust

NINO LV

• 16-channel amplifier/discriminator cards (2 NINOs)

• Outputs: amplified analogue; LVDS (time-over-threshold); OR (1/NINO)

• Internal potentiometer/external LV supply for discriminator threshold control

• 2 versions: Rev G; Rev D1 • Rev G (co-ax inputs): BB GRINCH; hodoscope • Rev D1 (2x 8-pair IDC): SBS CDet (RICH?; HCal?)

Example Schematic 1 ChannelNINO

LVDS

Amplified Analogue

Signal

Input

NINO w/ GRINCH PMT Amplified

Input

LVDS


Rev D1 and G Current Status

Rev D1: SBS CDet • >2k ch = 185 cards requested • First 28 @JLab to instrument 1st module (June 2016) • Jan 2017 further 160 cards produced to complete instrumentation (8 spare)

• 160 testing in Glasgow on-going • 84 good, 20 of which delivered to JLab (April 2017) • 30 awaiting re-test/fix (NINO fine):

• most require replacing faulty capacitor on LV supply line • some high-freq noise check (power cycling/flat ribbon connect both outputs)

• Aiming to complete testing/repairs by end April 2018 (testing will end in couple weeks) • Currently ready to ship another CDet batch when required (64 ready)

Rev G: BB GRINCH (35 cards); Hodoscope (12 cards) • Require MCX/RG179 custom input cables

• 35 cards and 560 cables @JLab for GRINCH, currently instrumenting prototype

• Most hodoscope cards faulty (4 good, 11 bad - mostly input connector issue, would require re-seating at company Zot)

• Upcoming production will replace faulty cards (faster) • 200 x 1.5m length co-ax cables @JLab • Expect procurement and complete testing of new hodoscope cards by Summer 2018


Current Activities/Production

• Procured all components for production of 210 more cards • 150 x Rev D1; 60 x Rev G

• Will provide spares for detectors currently using cards • Rev G for BB hodoscope faulty card replacement • Cards available for other detectors if needed

• Production outsourced to Zot • Components currently being sent to Zot - production starting soon • Production time quoted 6 - 8 weeks (in past more like 2 - 3 wks) • Expect delivery Glasgow end April 2018 (latest), expect complete testing by end winter

(unless urgent demand, e.g. hodoscope cards will be ready by summer 2018)

150 x Rev D1 SBS CDet (RICH/HCal?)

60 x Rev G BB GRINCH, Hodoscope


NINO Summary

• 64 cards immediately ready to ship for CDet when required • Soon production of a further 210 cards will begin (150 Rev D1, 60 Rev G)

• Expect production complete by end April 2018 latest • NINO cards for BB hodoscope can be tested by end May 2018 • These will act as spares/replacements for current detectors and be

available for any other detectors wishing to use NINO FE cards


BigBite Timing Hodoscope


• Positioned between BB pre-shower/shower calorimeters

• High precision timing info for 2-arm (e,e’N) measurements • (pulse height (NINO ToT) information; high efficiency for MIP

over BB momenta range; hit position information may assist high occupancy tracking)

• Set-up: • 90 vertically stacked scintillator bars • Light guides at each end, alternating straight/curved • Single channel PMT readout at each end (x180) • Custom designed PMT bases and NINO readout

• Original installation attempt July 2017, return to Glasgow for modifications of PMT assembly components

• Testing on-going, almost complete • Aim to ship back components March • Expect installation after BB frame welding completion

(spring/summer 2018; will fix schedule March)

BigBite Timing Hodoscope


Light Guides and Scintillator Bars

• 90 (+6 spare) Eljen technologies EJ200 plastic scintillator bars (600 x 25 x 25 mm)

• Light guides glued using UV curable cement

• Signal sizes large enough for for dry/air coupling with PMT

• Bars @JLab and ready • Bars have been visually checked, made

light-tight July 2017


PMTs and Bases

820k390k

13 1214 2 11 3

Modified plastic scintillator, −ve HV for higher current operation.

10 4 9 5 6 7

Voltage divider for ET9142SB 28mm PMT, Hall−A JLab.

Vmax 1.5kV

−1.3 kV

Imax 0.35 mA

J.R.M.Annand 28/05/2014, modified PS Lumsden 30/03/2016

220k 220k 220k 220k 220k 220k 560k 560k50R

Resistors 0.330W, 150V 200ppm/C

D8D7D6D5D3 D4D1 D2 D9 D10K

10n

200 V

10n

2kV

10M

10n4.7n2.2n

A

• ET Enterprises ET9124 PMTs • Optimal trade-off performance/cost • Time resolution 0.15ns • (measured w/ cosmics, curved light guides,

scintillator, NINO, meant time)

• Custom bases (-ve HV) • Low gain, high linearity over wide dynamic range • Faster, cheaper than ET option

• MCX connector - cables ready @JLab • DIRC PMT pattern HV connector - need cables

• 180 (+ 20 spare) PMTs procured, @JLab • 180 (+ 20 spare) bases and containers

manufactured, @JLab • Bases must be made light tight


PMT Assembly Components

Light Guide Clamp

Gas Inlet

Heat Shrink

Outer Mu Metal

Base Collar

Mu Metal

Light guide clamp, gas inlet connection

Al PMT case and end base collarWasher

PMT

Base Cover

Base

Base Collar

Clamp

Mu Metal

• Since July 2017, several components modified • Currently under final tests • Expect to ship March 2018 to be in JLab April

(subsequently set installation date)


• Original assembly modified for new shorter PMT • After July 2017, returned collars to Glasgow to re-bore for

wider bases • 200 collars now machined

• Procured set screws for fixing PMT base in collar • Plan to fix collar in Al case using fast set epoxy • Looking at possibility of springs to fix Al case to light-guide

clamp/keep slight pressure on PMT against light-guide

Light-Tightness: • Heat shrink and o-rings for added light-tightness • Huge leaks in base/PMT glass bottom, filling base with

silicone sealant works well, investigating solution to do this efficiently for 200 during installation

PMT Base Assembly End


• Nylon washer, supporting PMT, modified for better gas flow

• White plastic gas nozzle changedto short Al pipe • Located in clamp collar, will fix with glue • Straight pipe is a source of light leak, bend pipe • Procured enough pipe and bending tool, still to cut/bend x200

• Gas clearance around light guide tight - tested ok with pressurised air

• Heat shrink for light tighting. Will not fit over gas pipe - use silicone sealant around pipe base

Gas System/Light-Guide End


Outstanding Requirements for Set Up in Hall A

60m for signal cables should be sufficient

• Expect commissioning of hodoscope to take place as part of BB commissioning in ESB, • Would aim for installation, set up of cables, DAQ, online software by end 2018/start 2019 to start

commissioning/calibration shortly after

Document describing proposed final set up/readout in hall (J. Annand). (please see document for more details)

LVDS to ECL convertor

Need to know cable lengths for HV/LV


Low and High Voltage Supplies, Distribution and Cables

• HV and LV distribution panels should be as close to hodoscope as possible • HV and NINO LV distribution panels - design and construction is needed (2nd half) 2018

• Agilent high-current PSU for NINO LV available from Glasgow • 1 more LV supply (low current, ~20mA) for NINO external threshold needed (2nd half) 2018

• HV: CAEN SY1527LC mainframe, 4 x A1932A 48-channel HV distributers w/ individual channel control (1x SY1527LC; 8x A1932A available from Glasgow)

• HV output on 52-pin connector - an option could be multiway HV cable, with Cu braiding - design and construction of HV cable is needed

• Connect multiway cables to a distributer panel; individual HV cables to PMTs needed • For HV cables urgently need to find connectors to match PMT bases (originally came from

JLAB from BaBar DIRC PMTs). They are not in Glasgow. • All HV and LV distributer panels, cabling, connectors, and final HV cable lengths will need

design and construction asap (2nd half) 2018

Example LV distribution for NINO

SY1527LC mainframe

48 H

V C

onne

ctor

A1932A 48 HV chan distr


NINO Signals

• NINO cards must be situated as close to hodoscope as possible • 200 co-ax signal cables for PMT to NINO are currently @JLab, 1.5m length

• Space is required on BB frame for 12 NINO cards • (Area NINO card 76mm x 122mm, with minimal thickness ~30mm for each card

with cables attached)

• Expect ~60m cables from NINO to readout should be long enough • Use an existing LVDS to ECL converter from JLab for NINO digital signals

• Enough flat ribbon available in Glasgow for LVDS signals • Cables/connectors can be made in Glasgow


NINO Signals QDC and TDC Readout

• TDCs for digital LVDS signals • CAEN V1190A VME TDC • 128 channels; multi-hit; 100ps resolution; already

tested with NINO and hodoscope signals • V1190A connector (34-pair Robinson-Nugent) will

require custom cables or procurement of convertor (commercially available)

• Glasgow can make TDC cables and Robinson-Nugent connectors

• QDCs needed for sub-set of analogue signals (32/64) • CAEN V792 32-channel VME QDCs • Will not be used in production data • To calibrate NINO time-over-threshold (ToT) • Is there sufficient co-axial cable in JLab for QDC

signals? 60m length?

• Available from Glasgow: • 3 x V1190A TDCs • 2 x V792 QDCs • 1 x Wiener VME64x6023 crate

V1190A VME TDC

Robinson Nugent Connector

17-pair IDC to Robinson Nugent convertor


Current Software Considerations

• Will require slow control of HV and LV (EPICS) • Will require CODA/DAQ control

• Basic display for online running (essentially what we had in Glasgow during prototyping, has to be migrated to Hall A quasi-online)

Calibrations • Need limited number QDC channels • QDC spectra; calibrate ToT; time walk

correction All runs • All channels: TDC spectra; ToT distributions • Per bar: mean time distributions; time diffs

Mean Time

Time Diff

ADC pulse height PMT left V right

Mean ADC pulse height of bar

Further analysis for offline: • Hodoscope (X,Y) hit positions (bar vertical

number (Y) + time difference (X)) • Correlation of hodoscope to GRINCH and

reconstructed GEM tracks • Mean time corrected for for flight-path length

from target (after GEM reco) • Correlation corrected mean time to beam

bunch …

Time Diff Vs hit position


Proposed Roadmap of Tasks - Hardware

Immediate timeline for assembly: • March 2018 ship components to JLab • Spring/summer 2018, install 90 bars, 180 PMT assemblies in BB

• End May NINO cards ready, ship to JLab • Summer 2018 mount NINO cards to BB frame (will need to arrange/design)

Required before post-assembly for commissioning: • Ship VME crate/HV units/QDCs/TDCs/LV PSU (summer 2018) • LVDS cables+connectors manufactured in Glasgow and shipped to JLab (summer 2018) • Need to source QDC cables in JLab (2018)

• Low current LV supply for NINO threshold needed (2nd half 2018) • Design, manufacture of LV and HV distribution panels needed (2nd half 2018)

• HV and LV cable length decision and cable manufacture needed (2nd half 2018)

• 2nd half 2018 need JLab help to set up CODA DAQ+connection to readout electronics

• Gas flow (hoses needed) ready and tested 2019 before move into hall


Proposed Roadmap of Tasks - Software

Required for commissioning: • In-house help from JLab required to set up slow control (EPICS) of LV and HV, via

ethernet connection, and CODA DAQ for readout (2nd half 2018)

Initial Software: • Towards end 2018, after installations, cabling and DAQ set up, main task is to develop a

basic display for online running • Had something similar to this during prototyping in Glasgow • This will include analysis and display of e.g.:

• For calibration runs: QDC spectra and ToT calibration and time-walk correction • For data runs: channel TDC spectra, channel ToT distributions, bar mean times, bar

time differences

Scripts for further analysis required before running includes (develop in 2019): • Hodoscope hit position reconstruction • Scripts to analyse correlation of hodoscope to other detectors • Analysis for mean time corrected for flight-path length and beam bunch correlation


Hodoscope Summary

• Final testing of PMT assembly underway • Plan to ship assembly components next month to install bars/PMTs in spring/summer 2018

• Further items available from Glasgow: • Flat ribbon cables (60m) and connectors for NINO LVDS signals • 3 x V1190A TDCs; 2 x V792 QDCs; 1 x Wiener VME64x6023 crate • Agilent high-current PSU for NINO LV • CAEN SY1527LC HV mainframe and 8x A1932A HV distributers • Need to set required dates/arrange shipping above items (summer 2018?)

• Issues outstanding/equipment needed (not available from Glasgow) before commissioning: • HV and LV cables - connectors, required length, manufacturing (2018) • HV and LV distribution panels - design and manufacturing (2018) • Low current 20mA LV supply for NINO threshold control (2018) • Can use an existing LVDS to ECL converter in JLab • Gas system (hoses, will be ordered from JLab vendor) (2019 before hall move)

• Install and commissioning, before move to hall, will take place in ESB with BB

• Currently software requirements for final analysis/event displays under consideration

• Immediate software goal would be basic display for online running, develop in 2018, starting after the hodoscope is installed, and cables and DAQ are set up. This would include display of quantities such as:

• QDC and TDC spectra; bar mean times and time differences, reconstructed positions


Questions


NINO ASIC

Voltage Supply 2.5 VPower 27 mW/channel

Peaking Time 1 nsFE Time Jitter <10 psSignal Range 30 fC - 2 pC (1.8e5 - 1.2e7 e-)Discriminator

level10 fC - 100 fC (0.62e5 - 1.2e5 e-)

Noise < 2500 e-Output LVDS

Rate capability >> 10 MHzInput

Impedence50 Ω

• NINO: ultra-fast, low-power, front-end differential amplifier/discriminator ASIC

• doi:10.1016/j.nima.2004.07024

• Single photon sensitive • Scintillator signals may require attenuation

• Several BB/SBS detectors using NINO cards

voltage difference = LV supplied to circuit - 1.25V

Width 12ns, falling 5ns, rising 14ns

NINO LVDS OUT

Example Input

ToT


Post-Production Tests

• Production outsourced to Zot company • Cards received from Zot tested in Glasgow before shipping to JLab

• Input 3 x 3 x 1 cm plastic scintillator, single channel PMT, cosmics

• Test procedure repeated for every card; logging: - current (NINO & threshold circuit supplies); noise; LVDS height/widths;

threshold levels of input and amplified out; low/high threshold settings; internal/external threshold control

Example: 47 RevG cards

NINO supply current

LVDS Min

Width (a)

Input Threshold

(b)

Amplified Threshold

(c)

(a)

(b)

(c)

nino cards and bigbite timing hodoscope update · r. montgomery, sbs meeting, 14/07/17 10 pmts and...

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