ATLAS Inner Detector MO_B 2012 closure 2013 mid-year status 2014 request

ATLAS Inner Detector MO_B 2012 closure

2013 mid-year status2014 request

H. Pernegger / Pixel PL & ID Resource Coordinator

D. Robinson / SCT PL and ID PL

A. Romaniouk / TRT PL

3/7/2013 1

Report from April RRB

• Book closing 2012

2

BalanceID Pixel SCT TRT Total

Entry Amount (kCHF)Budget 2012 575.00 540.00 635.00 685.00 2435.00Carry over from 2011 81.00 125.00 70.00 -86.00 190.00Total payments 614.00 655.00 799.00 407.00 2475.00

Carry over to 2013 42.00 10.00 -94.00 192.00 150.00

23/7/2013 H. Pernegger / CERN RRB July 2013

Book closing 2012

• Expenses by categories

Totals paymentsID Pixel SCT TRT

Category Amount (KCHF) TotalMech+gas+cool 33.00 0.00 0.00 8.00 41.00Elec+control 54.00 330.00 450.00 132.00 966.00Areas 183.00 53.00 31.00 17.00 284.00Comms 4.00 2.00 5.00 3.00 14.00Stores 14.00 23.00 11.00 12.00 60.00Sub-det spares 0.00 0.00 0.00 0.00 0.00Manpower 326.00 247.00 302.00 235.00 1110.00

TOTAL 614.00 655.00 799.00 407.00 2475.00


2013 Budget


Mid-year spending

• So-far spent about 53% of the budget• Pixel L2 and SCT TX still to come• Expenses to-date include much of 2013 manpower commitments

Balance 2013 ID Pixel SCT TRT Total (kCHF)

Budget carry-over from 2012 42 10 -94 192 149

2013 Budget 673 610 637 545 2465

Spent (by June 2013) 480 182 146 422 1230 Remaining 235 438 397 314 1384


Main Cost Drivers and LS1 activities

• Manpower for LS1 scheduled work:• Pixel : Integration of IBL and Pixel detector new Service

Quarter Panel replacement• ID: Installation of the new thermo-siphon C3F8 cooling

system• TRT: Address leak issue and consolidate gas system• Consolidation of SCT readout: Order of new TX plug-ins and

production of new BOC card.• This consolidation of SCT readout is carried out with the

current budget during the shutdown. • The overall budget of the SCT is maintained at 637 kCHF


Pixel extraction / nSQPNew Service Quarter Panels (nSQP) will replace current Pixel services to move new opto-boards outside the Pixel detector volume (decided by ATLAS & Pixels in January 2013)

Thereby also repair of Pixel RO channels, redundant links, faster, installation of Diamond Beam Monitor,...)

Extraction of PIXEL done in April, now in SR1 clean room, un-cabling has been completed

Re-installation in UX15 from January to March 2014 followed by commissioning

Consolidate readout system to cope with Run 2 beyond-design luminosities


Integration of IBL

• IBL Module and Staves– Module production now in full swing , expect to

finish in September – Stave loading with modules has started with first

5 of 14 installed staves done– First tests on production stave in SR1 show good

results

• IBL integration – Tooling prepared– Work now on final assembly of support structures– Expect to start integration during August

• IBL installation in March 2014• Full commissioning of pixel starts May/June

2014


Data taking in 2012SCT and PIXEL operated with pileup and physics occupancy which far

exceeded the original design levels for the highest foreseen LHC luminosities

(e.g. 0.2-0.5% SCT occupancy with m~23 at L ~ 1x1034cm-2s-1)

Design

PhysicsTest runs

Pixe

l occ

upan

cy

Bunch Luminosity [10^30]

Design

Pixel Occupancy for different Layers


m=80

SCT DAQ Expansion

100kHz at m~87

Maximum sustainable L1 rate as a function of pileup, 14TeV, 25ns

FEROD8176 data links

RODROSExisting 90 Slinks

RODROSWith 128 Slinks and data compression

✗ 100kHz at m~33

100kHz at m~87

We will adapt the existing DAQ system to cope with the high pileup conditions in Run2• 90128 RODs and BOCs• Improved data compression on RODBoth FE and ROD bandwidth compatible with pileup close to 90 at 100kHz 103/7/2013 H. Pernegger / CERN RRB July 2013

SCT New Optical Transmitters (TX)

1 2 3 4 5 6 7 8 9 10 110

1

2

3

4

5

6

7

8

9

10

Currently installed VCSELs were operationally robust during 2012,but two significant issues developed which impact on future operation:

1. 10% drop in optical power 2. Small but significant death rate

Optical power (IPIN data) vs Date Number of deaths vs channel number

SCT will move to commercially packaged optical array assemblies, back engineered to match the mechanical and connectivity constraints of the

existing BOC hardware and fibresInstallation scheduled for Spring/Summer 2014 113/7/2013 H. Pernegger / CERN RRB July 2013

Consolidation of Pixel readout

• Pixel readout:

• During next run LHC will reach “beyond-design luminosity” which

will lead to data rates for which the Pixel readout was not built.

• The beyond-design peak luminosity leads to saturation on backend

electronics

• This caused pixel detector inefficiency already in Layer 2 and will later cause inefficiency on Layer 1

• The saturation and resulting inefficiency is a function of Luminosity, L1A rate, hit rate per double column, error rate and number of FE-chip with hits


Pixel Readout

The bandwidth between module and ROD depends on the layer:• 160 Mb/s (2x80Mb/s) on two optical fibers for the B-layer• 80 Mb/s on one fiber for layer 1 and disks• 40 Mb/s on one fiber for layer 2

13

.

.

. 16 FE

.

.

16 x 40 Mb/s FE/MCC links

Col pairs

EOC bufferand logic

..9..

MCC

..16..

ROD40, 80 or 160 Mb/s

MCC/ROD links

MCC buffers ROD buffers


Link occupancy at future luminosities

• Pixel readout link Link Occupancy for different luminosities : 7x1033 at 50ns 1x1034, 2x1034 and 3x1034 at 25ns

• MCCROD link occupancy at 75 and 100 KHz LVL1 rate:

• At and above 2x1034 first Layer 2 will saturate, then followed by Layer 1– Run 1 limitations at start of fill and due to ROD computing power limits when m>>

design

• Priority for consolidation: Fix now Layer 2, followed later by Layer 1 14

µ B-Layer Layer 1 Layer 2 Disks50 ns 37 39% 34% 52% 30%

25 35% 31% 48% 27%51 53% 59% 66% 39%76 71% 73% 111% 64%

Link occupancy at 75 kHz L1 Trigger

25 ns; 13 TeV

µ B-Layer Layer 1 Layer 2 Disks50 ns 37 51% 45% 69% 40%

25 47% 42% 65% 37%51 71% 67% 88% 52%76 95% 97% 148% 75%

Link occupancy at 100 kHz L1 Trigger

25 ns; 13 TeV


Pixel IB

Layer 2 limitations already in 2012

• Observed already limitations during Run 1 at start of fill– Observe high number of desynchronized modules in Layer at start of fill.

Decrease follows luminosity decrease

13/6/2013 H. Pernegger / CERN 15

Consolidation of Pixel readout

• Consolidation of Pixel Layer 2 readout system by using IBL ROD/BOC for Layer 2/1.

– Bandwidth increase:

– L2: from 40 Mb/s to 80 Mb/s on a single fibre– L1: from 80 Mb/s to 160 (2x 80) Mb/s on two fibres

• Usage of IBL boards for Pixel readout consolidation– Boards provide bandwidth and computing power safety margin

also at high pileup– Adoption to Pixel can be done in firmware

• B-Layer and disks shall remain with present ROD/BOC – opto packages will need replacements

• Cost estimate based on IBL production number is 315 kCHF for Layer 2 consolidation

• 120kCHF included in 2013 MO_B budget• Request additional 70kCHF for 2014 and 100kCHF for

2015


This pipe should be repaired.

Access outside is blocked. The only way to repair is from inside of the pipe.

Pictures from inside of the PEEK pipes taken

with Endoscope.

A special tool was developed andAll active pipes at the exit of the TRT ECs were replaced

(including not leaking ones).

However some leaks were in inaccessible areas.and only way to keep leaks under control is a modification of

the TRT Active Gas System.

TRT Gas system


Modification of TRT Active Gas system

• Modification or replacement of different parts of the gas system to allow parallel operation with Argon

• Distribution racks in UX area which includes a remote control of the gas flows through individual gas supply lines (80 channels).

• Fully controlled Ar-mixer rack and analysis system to supply some parts of the TRT with Ar-mixture

• Distribution module for Ar mixture (UX area) direct supply (without circulation) of some parts of the TRT with Xe-mixture with detailed monitoring of the gas consumption

• Pressure control system in the gas return lines (USA area)

• Improvements for better stability183/7/2013 H. Pernegger / CERN RRB July 2013

Projection to end 2013

• 53% of the budget spent to date;• Large cost drivers which will come in next months

include:– Pixel consolidation of readout for Layer 2/1

component order– SCT order for Lightable VCSEL arrays for TX plug-ins

and BOC cards• Integration of IBL and new Pixel services integration, the

change of the ID C3F8 cooling system and the TRT leak fixes are the core activities of the LS1 shutdown. Those activities dominate the manpower expenses

• SCT will fully absorb -94kCHF negative carry-over not this year but in 2014.


Requests for 2014

Budget numbers in kChF20

EXPERIMENT: ATLAS request 2014Subsystem: ID Pixel SCT TRT IDGEN Total

Mechanics 0 0 0 0 0Gas-system 0 0 70 0 70Cryo-system 0 0 0 0 0Cooling system 0 0 0 0 0FE electronics (spares) 0 0 0 0 0Standard electronics, PS (LV, HV) 70 115 40 10 235Standard electronics, Crates 35 60 50 0 145Standard electronics, RO Modules 130 110 15 35 290Controls, (DCS, DSS) 10 20 10 5 45Sub-Detector Spares 0 0 0 0 0

Areas

SR-maintenance facility (buildup) 30 0 0 0 30

SR-maintenance facility (operation) 30 20 30 120 200

Testbeam and irradiation 30 0 0 0 30

Systemtests 0 0 0 0 0Communications 1 5 5 8 19Store Items 24 30 30 80 164Hired Manpower @ CERN (CHF) 0 0 0 0 0

Standard tasks 150 177 195 215 737

Special interventions 100 100 100 200 500TOTALS [kCHF] (excl. FTEs) 610 637 545 673 2465

Technical Manpower [FTE] , OTP 48 24 27 30 129


2015 and beyond

• For 2015 and beyond preserve a flat MO budget– Add IBL core electronics maintenance into 5% model of pixel.

The readout of Layer 2/1 with IBL ROD/BOC will still contribute to 2015 expenses


RRB July 2013

Summary

• Preserve model of spending 5% of core for electronics– Excellent experience, this is a good match to our needs, always sufficient

number of spares available;– SCT managed to absorb TX failures in 5% maintenance model

• Request for a 100 kCHF IDGEN manpower increase for 2014 as the shutdown is now the full two years– Main objectives are consolidation of C3F8 cooling, maintenance of heater

system and re-commissioning of ID with new cooling systems (thermo-siphon and C02)

– Cover the LS1 activities with today’s knowledge and based on 2013 experience

• Request of additional 70+100 kCHF in 2014 and 2015 for electronics for Pixel readout consolidation– This is consolidate the Layer 2 readout ready for Run-2

• In Jan 2013 it was decided to de-install pixel and replace service quarter panels. The Pixel and IBL integration, installation and commissioning is the major LS1 activities for 2014

3/7/2013 H. Pernegger / CERN 22

Documents

ATLAS Inner Detector MO_B 2012 closure 2013 mid-year status 2014 request