[PPT] - ATLAS NSW Trigger Alex Tuna Harvard University DPF @ Fermilab 31 PowerPoint Presentation

SLIDE 1

ATLAS NSW Trigger

1

DPF @ Fermilab 31 July 2017

Alex Tuna

Harvard University

SLIDE 2

Alexander Tuna

related talks this week

2

Yu: ATLAS MDTs for HL-LHC Monday afternoon Catrin: ATLAS trigger algs in Run 2 Monday afternoon Heather: ATLAS trigger menu in Run 2 Monday afternoon Tom: ATLAS Muon for HL-LHC Wednesday afternoon Xiangting: ATLAS tRPCs for Run 3+ Thursday morning Liang: ATLAS NSW Electronics Thursday morning Jared: CMS GEM for Run 3+ Thursday afternoon

SLIDE 3

Alexander Tuna

3

introduction

SLIDE 4

Alexander Tuna

4

LHCb LHCb ATLAS ATLAS ALICE ALICE CMS CMS

L a k e G e n e v a L a k e G e n e v a Salève Salève

LHC LHC

SLIDE 5

Alexander Tuna

a 20-year plan for the LHC

instantaneous luminosity increasing — experiments must adapt!

5

ATLAS has suite of upgrades for near-term (Phase 1) and long-term (Phase 2)

SLIDE 6

Alexander Tuna

the new Small Wheel (NSW)

6

NSW replaces current SW — under construction now comprised of eight layers each

f two new detectors for ATLAS

!"# $%&'()*+, %-%.+/)'%0 1%02 3/45+, "&+2)'% !4--&/0

!676,899:

Micromegas (MM) small Thin Gap Chambers (sTGC)

SLIDE 7

Alexander Tuna

the new Small Wheel (NSW)

7

ffers two major improvements to ATLAS muon spectrometry

rate capacity

detector elements much smaller in NSW than current SW e.g. MM strip pitch ≈ 0.5 mm whereas CSC strip pitch ≈ 5 mm smaller flux per element @ NSW latest HL-LHC estimate: 7.5x1034

SLIDE 8

Alexander Tuna

the new Small Wheel (NSW)

8

ffers two major improvements to ATLAS muon spectrometry

trigger

NSW adds layer of coincidence for hardware trigger decision powerful reduction of triggers not

riginating from muons

η RoI

2
1

1 2

Number of RoI

50 100 150 200 250 300

L1_MU11 RoI RoI matched to reconstructed muon >10GeV reco. muon

T

RoI matched to p

ATLAS Preliminary

ATLAS Run 201289 [LB 96-566], LHC Fill 2516, Apr. 15 2012, 50ns spacing

emphasis of this talk

SLIDE 9

Alexander Tuna

the new Small Wheel (NSW)

9

ffers two major improvements to ATLAS muon spectrometry

trigger

New Small Wheel IP

Z

end-cap toroid

∆θ

LL_SV_NSW

A B C

EI

Big Wheel EM

NSW adds layer of coincidence for hardware trigger decision powerful reduction of triggers not

riginating from muons

emphasis of this talk

SLIDE 10

Alexander Tuna

10

sTGC & MM triggers

SLIDE 11

Alexander Tuna

11

sTGC trigger electronics

strip TDS pad TDS ART Router GBT GBT Trigger processor Trigger processor Config Pad trigger

NSW Electronics Trigger & DAQ dataflow

TTC

USA15

n-chamber
n NSW rim

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

n e t w

fibres

Readout

ASIC

ratjon

sTGC MM “ADDC” sTGC MM

ART VMM strip TDS

# VMMs per FEB: MM: 8 sTGC strips: 6 or 7 sTGC pad+wire: 2+1

strip TDS

3/FEB 1/FEB

FELIX FELIX

candidate merging

LV power GBT SCA 2xGBT

fibre

“L1DDC”

n-detector FEB

near-detector

ff-detector

American institutes building many pieces! BNL for FE chip: VMM Michigan for drivers: TDS and Router Illinois for trigger functions: Trigger anc.

SLIDE 12

Alexander Tuna

12

sTGC trigger electronics

ask for many-layer coincidence with coarse pad triggers
readout strips within pad trigger tower

active pad-tower covers active strip band

pping pads.

φ ID

large data reduction with pad “pre-triggering”

3 out of 4 && 3 out of 4

SLIDE 13

Alexander Tuna

TDS ASIC x 9

4 Gb/s 120b/116b encoding per packet,

ne packet per BC

pad trigger data x

13

sTGC trigger electronics

×2 quadruplets — 8 centroids of strips — 2 centroids of centroids — LUT for “track”

−2 2 4 6 8 10 12 14 16 18 50 50 50 50

14.00 layer 1 12.00 layer 2 10.08 layer 3 8.28 layer 4

Event 1906 strip # Q from Time−Over−Threshold

y ly e d- f er ts s- es n- d n ia e n i-

φ coordinate measured by pad

SLIDE 14

Alexander Tuna

14

MM trigger electronics

ART GBT GBT Trigger processor Config

NSW Electronics Trigger & DAQ dataflow

TTC

n-chamber

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

n e t w

fibres

Readout

ASIC

ratjon

MM “ADDC” MM

ART VMM

# VMMs per FEB: MM: 8 sTGC strips: 6 or 7 sTGC pad+wire: 2+1

FELIX FELIX LV power GBT SCA 2xGBT

fibre

BNL for FE chip: VMM Arizona for FE card: MMFE8 Harvard for trigger card: MM TP BNL for driver card: ADDC Illinois for trigger functions: Trigger anc. American institutes building many pieces!

SLIDE 15

Alexander Tuna

15

only readout first strip per VMM
“ART”: Address in Real Time
64 strips per VMM covers ~2.5 cm

zhalf (2.5 mm)

xhalf

zdrift (5mm)

ti, xi x z

horizontal

stereo stereo MM φ information inferred from stereo planes with θstrip = 1.5°

“U” “V” “X”

MM trigger electronics

~20x less data than full readout

SLIDE 16

Alexander Tuna

16

all ART strips received at MM TP , then filtered by roads in FPGA large data reduction with road filtering: ~500 roads per chamber

4 m

7.6 m 7.8 m 1 m R z IP

𝙔

MM trigger electronics

filtered strips then “fit”

for track parameters

𝙔 𝙔 𝙔 𝙔 𝙔

✓

SLIDE 17

Alexander Tuna

17

all ART strips received at MM TP , then filtered by roads in FPGA large data reduction with road filtering: ~500 roads per chamber

4 m

7.6 m 7.8 m 1 m R z IP

MM trigger electronics

filtered strips then “fit” for track parameters

✓

SLIDE 18

Alexander Tuna

18

all ART strips received at MM TP , then filtered by roads in FPGA large data reduction with road filtering: ~500 roads per chamber

4 m

7.6 m 7.8 m 1 m R z IP

MM trigger electronics

filtered strips then “fit” for track parameters

SLIDE 19

Alexander Tuna

19

performance

SLIDE 20

Alexander Tuna

20

simulated performance

Entries 10 20 30 40 50 60 70

NSW

φ

BW

φ 0.1 − 0.05 − 0.05 0.1

NSW

η

BW

η 0.1 − 0.08 − 0.06 − 0.04 − 0.02 − 0.02 0.04 0.06 0.08 0.1 ATLAS Simulation Preliminary

Phase I upgrade study = 40 GeV

muon T

p = -0.25

RoI

φ = -1.39,

RoI

η

simple OR of sTGC and MM decisions excellent matching resolution between NSW and existing BW NSW-BW coincidence efficiency expected to be 90-95% or better for flagship L1 pT(μ) > 20 GeV

SLIDE 21

Alexander Tuna

21

simulated performance

simple OR of sTGC and MM decisions muon trigger rates dominated by fakes in the endcaps Muon level-1 trigger rate [Hz] 10 10 10

η η

threshold [GeV]

T

p 5 10 15 20 25 30 35 40 45 Muon level-1 trigger rate [Hz]

3

10

4

10 10

η |<1.05 η | Extrapolation with NSW

ATLAS Preliminary

6

10 = 14 TeV s

1

s

2

cm

34

L=10

Extrapolation η η

5

3

10

4

10

5

10

η η

w i t h

u

t N S W with NSW barrel substantial rate reduction (~3x) predicted with NSW

Extrapolation to 14 TeV, L=1034 cm-2s-1

SLIDE 22

Alexander Tuna

22

MM performance in data!

ART GBT SCA GBT Rx-Tx Trigger processor Config

NSW Electronics Trigger & DAQ dataflow

TTC

n-chamber
n NSW rim

ASIC Config

DCS

E-links

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

n e t w

r

k

fibres

Readout

ASIC

calib- ratjon

MM “ADDC” sTGC MM

ART

“L1DDC”

VMM

# VMMs per FEB: MM: 8 sTGC strips: 6 or 7 sTGC pad+wire: 2+1

FELIX FELIX

candidate merging

LV power GBT SCA 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

computer for DAQ and config.

scintillator trigger clk/trig. distributor

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Front end boards

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre MMFE8 FPGA

ADDC V1 MMTP on VC707 MMFE8s w/VMM2

Harvard CRTS

built 8-layer micromegas mini-chamber at Harvard to measure performance with cosmic ray muons chamber equipped with prototype electronics, and recording both trigger and offline data

SLIDE 23

Alexander Tuna

23

MM cosmic ray test stand

[mrad]

MMFE

θ −

MMTP

θ 60 − 40 − 20 − 20 40 60 Events 1 10

2

10

3

10

4

10

RMS: 5.7 mrad 96.9% 100.0% 24 strips ± Road size: < 15 θ ∆ < 100 θ ∆

[mm]

MMFE

〉 x 〈 −

MMTP

〉 x 〈 4 − 3 − 2 − 1 − 1 2 3 4 Events 1 10

2

10

3

10

4

10

RMS: 0.41 24 strips ± Road size:

angular resolution spatial resolution

taking offline (full) readout as reference, trigger algorithm fully functioning and performs within spec

RMS 0.41 mm RMS 5.7 mrad Harvard CRTS Harvard CRTS

SLIDE 24

Alexander Tuna

24

summary

SLIDE 25

Alexander Tuna

summary

25

NSW trigger hardware and algorithms in advanced state, already making triggers with cosmic ray muons New Small Wheel (NSW) is under construction now, planned to be operational for Run 3 of the LHC and beyond

SLIDE 26

Alexander Tuna

26

bonus

SLIDE 27

Alexander Tuna

some references

27

New Small Wheel Technical Design Report https://atlas.web.cern.ch/Atlas/GROUPS/ PHYSICS/UPGRADE/CERN- LHCC-2013-006/index.html Muon Spectrometer Technical Design Report http://atlas.web.cern.ch/Atlas/GROUPS/ MUON/TDR/Web/TDR.html NSW Public Results https://twiki.cern.ch/twiki/bin/view/ AtlasPublic/NSWPublicResults L1 Muon Public Results https://twiki.cern.ch/twiki/bin/view/ AtlasPublic/L1MuonTriggerPublicResults Muon Trigger Public Results https://twiki.cern.ch/twiki/bin/view/ AtlasPublic/MuonTriggerPublicResults

SLIDE 28

Alexander Tuna

the current Small Wheel (SW)

28

cham- with a anode-cathode pitch

b-
n

avalanche eso- the interpolation cathode

Figure 1-10 Schematic diagram of the Cathode Strip Chamber

Anode wires Cathode strips d d W S

Figure 1-9 Schematic drawing of a rectangular MDT chamber constructed from multilayers of three monolayers each, for installation in the barrel spectrometer. The chambers for the end-cap are of trapezoidal shape, but are

f similar design otherwise.

Longitudinal beam In-plane alignment M u l t i l a y e r Cross plate

innermost layer of ATLAS muon spectrometer endcap not built to withstand HL-LHC!

Monitored Drift Tubes (MDT) Cathode Strip Chambers (CSC)

SLIDE 29

Alexander Tuna

reminder: Harvard test stand

Overview at last Muon Week

ART GBT SCA GBT Rx-Tx Trigger processor Config

NSW Electronics Trigger & DAQ dataflow

TTC

n-chamber
n NSW rim

ASIC Config

DCS

E-links

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

n e t w

r

k

fibres

Readout

ASIC

calib- ratjon

MM “ADDC” sTGC MM

ART

“L1DDC”

VMM

# VMMs per FEB: MM: 8 sTGC strips: 6 or 7 sTGC pad+wire: 2+1

FELIX FELIX

candidate merging

LV power GBT SCA 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

computer for DAQ and config.

scintillator trigger clk/trig. distributor

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Front end boards

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

Config

NSW Electronics Trigger & DAQ dataflow

Config

n twin-ax

fibre fibre fibre

twin-ax twin-ax

twin-ax

w

fibres

ratjon

sTGC pad+wire: 2+1

LV power 2xGBT

fibre

MMFE8 FPGA

collected a few 100k cosmic muons with low noise in May ADDC V1 MMTP on VC707 MMFE8s w/VMM2

29