Infrastructure activities planned on ATLAS during YETS 2015 Thanks to all the experts who contributed Bruno Saint Sulpice, Denis Dumas, Serge Deleval,

Infrastructure activities planned on ATLAS during YETS 2015

Thanks to all the experts who contributed

Bruno Saint Sulpice, Denis Dumas, Serge Deleval, Caroline Fabre, Nicolas Broca, Sylvia Grau, Dirk Mergelkuhl

M. Raymond02 Oct. 2015

ATLAS infrastructure activities during YETS 2015 2

Content

M. Raymond - 02 Octobre 2015

ATLAS overview Electricity Cooling and Ventilation Cryogenics Access and Safety Systems Vacuum Survey Transport


ATLAS overview


Many maintenance and consolidation activities are foreseen on the experiment.Some of them require access to inner parts of the Detector.Priorities have been defined to stay within the YETS duration (12 weeks)

1 234

On side C, Standard Opening

5

6

On side A, Forward region

⑤ Repair of MDT gas leak (EO & BW)⑥ PMTs replacement on LUCID⑦ 4 TGC1 chambers to be replaced on Big Wheels

7

① ECT-C vacuum bellows ② 5 Tile drawer repairs③ 2 CSC chambers to be dismounted and

repaired ④ 1 TGC1 chamber to be replaced on Big

Wheels


What does it entail ?


The 2 pits will be opened and shielding lifted up to surface, then heavy systems (End Cap Toroid, Small Wheel, End Cap Calorimeter) will be moved Access to UX15 strongly disrupted on week 51

Team organized in 2 shifts : 5h – 20h30, access to underground areas must not be limited weeks 51, 52, 1

Test secours accepted on Dec. 18th (short disruption)Request to move the Safety test @P1 on week 53

ATLAS will be mainly stopped at the beginning of the Technical stopBut needs to wake up progressively starting NO LATER than beginning of February

Disruptive interventions shall be completed by end of January 2016The full picture of the required interventions must be presented and discussed as early as possible, and in any case before the YETS starts

All interventions presented in the next slides are extremely new (10 days max.), they have not yet been presented to ATLAS systems, neither discussed. As a consequence, plans are very preliminary and most of them (if not all of them) will have to be confirmed.


AFP installation


• AFP is made a double arm detector– In YETS 2015 only one arm will be installed at

C6R1 – Installation will be pursued in EYETS (2017)

• Each detector consists of 2 Stations containing Roman Pots placed at 205 m and 217 m from IP

o secondary vacuumo air cooling

• Integration in tunnel in collaboration with EN-MEF• Cabling• Drilling of holes for the AFP supports • Installation of the stations planned by the end of the YETS

after commissioning of equipment on surface• Modify Exterior vacuum chamber between Q5 and Q6

2 VPI2 BLM, 1-2 BPM


AFP installation (2015-2016)


• Install cables for trigger in the service tunnel for both arms (04/01 – 17/02)o After discussion with surveyors agreed to install this year both sides not to

duplicate the dismounting of the surveyors equipmento This work will entail the passage of the cable from the LHC tunnel to the surveyors

gallery o Need to check tightness of sealing after installationo Cable installation will be done in collaboration with EN-MEF (Gianluca Canale)

• Install cables for services from Stations to US15 (not yet clear if services from both ARM will be installed in 2016)o This work will be done in collaboration with EN-MEFo The cabling from US15 to USA15 (in the UX15 cavern) can be done by ATLAS team

• Install patch panels/crates/racks at 205 m, 217 m, and 212 m

• Controls, Vacuum and motorization of the roman pots done in collaboration with PH-DTo Commissioning of motorization, interlocks, and detectors


Electricity (EN-EL)


Interventions Consequences Compensatory measures Duration Tentative schedule

Test AUG LHC1 No power, no access UPS swap to batteries and Diesel 1 day 25/01/2016 TBC

WE prefered

Test AUG LHC2 Cut of ventilation racks US15 – possible DSS alarms 1 day 08/02/2016 ??

Test auto transfer ATLAS limited at 240 A1 day on WE with no access Switch off all what can be 4 days No later than end

of January

Test secours No general power, no access UPS swap to batteries and Diesel 10 min. 18/12/2015

Addition of 1 column in UIAC120 for EN/CV

No impact from power supplyBut still to be investigated on control side : ventilation stop may happen

Experts will be on site, ready to intervene 2 days To de defined, no

strong issue (?)

EQD2/1H : Addition of 1 column for TE/CRG

Power cut of cryogenics (MR, Shield compressor) 2 days 15-16/12/2015 or 25-

26/01/2016

Modifications on EXD4/15A and EBD1/15A

Impact on Atlas Magnets to be cleared up

Work asked by PH-DT (magnet control) To be confirmed


Electricity (EN-EL)



Replacement of breakers with contactors on EXD1/15X and EXD2/15X (+ modification PLC)

Several systems affected: BWs, - commissioning avec DCS

Switch off related systems 2x4 days To be defined

Modifications on EOD8/15A Impact on IBL IBL could be re-powered

provisionally 2 days +

commissioning To be defined

Modification EXD2/1DXTDAQ

May be extended to all switchboards EXDi/1DX (x6)

Racks to be switched off 2 days To be defined

Maintenance of all ATLAS UPS *

No protection in case of glitch or short power cut

Repowering thanks to normal network 6 days To be defined

Transformer maintenance EMD305/1DX

no power to TDAQ All EXDi/1DX are cut 4h To be defined

48V maintenance Expected to be transparent ? To be defined

* Critical UPS in USA15 will stay on UPS


Cooling and Ventilation (EN-CV)



SF1 maintenance No primary water Use of SPS loop : cooling power about 1.3 MW 5 weeks 16 dec - 20 jan

SUX1 maintenance No Mixed water, no chilled water

Chiller CNGS (700 kW)No backup on pump, electrical power cut must be avoided

4 weeks 15/01To be better defined

US15 maintenance No Mixed water, no chilled water



USA15 maintenance No Mixed water, no chilled water



Ventilation maintenanceNo stop, redundancy affected,

perturbation expected on temperature, humidity and

pressureNone ? Parallel to cooling


Cooling and Ventilation (EN-CV)



ALFA cooled cables (RR13 & RR17) Only on ALFA None ? ?

Installation of by-pass on ATLAS US15 mixed water Empty US15 racks ? // cooling US15

Qualification of compressed air vessel in SH1

Stop of compressor neededCut inert gas in USA15 racks

Cryo --> back-up rack of compressed air 1 day 15/12/2015

(agreed with TE/CRG)

SF1 : repair of silencers ? During SF1 stop

Modification of the firefighting water circuit in SUX1

Cut back-up in SDX1Stop He liquefier

(back-up only)None ( short duration) 1 day Not during SF1

week 4 or 5 (TBC)

Addition of ventilation/pressurization column

Expected to be transparent ? To be defined

Replacement of ED pumps (USA15), filling circuit & additional valve

Demineralized water (Bus bar cooling)

? To be confirmed

after TS3


Cryogenics (TE-CRG)


Interventions Consequences Compensatory measures Duration Tentative scheduleSolenoid dewar: repair faulty instrumentation. Requires installation of a scaffolding for access.

None None 1 week To be defined

MR dryer: addition of new electrical column Stop of Main Refrigerator 2 days 15-16/12/2015 or 25-

26/01/2016

MR dryer: commissioning No impact None ? In the shadow of

other activities

SH1 24V power supplies redundancy.

Sequence stop of MR, SR, ANRS.


Access & safety systems (GS-ASE)


Maintenance of safety systems1. Sniffers :

• LHCb done on TS2• ALICE planned on TS3 + completion on YETS• ATLAS planned from Jan. 15th to Feb. 25th

6 rotations to perform the full maintenance of ATLAS sniffersAccess to US15 required on 15/01, 22/01, 29/01, 05/02, 12/02, 19/02

2. ODH Annual maintenance : 3 days to be defined, should be transparent (tbc)3. GAS & ODH Annual maintenance at surface : 2 days to be defined, should be

transparent (tbc)4. Fire detection

• Annual maintenance : 1 day to be defined, should be transparent (tbc)• Sensor replacement : 5 days to be defined, alarms expected on DCS and DSS

5. Red phone maintenance : 1 day to be defined, transparent

Maintenance of Access systemConsequences of “Modification to access point key distributor” have to be understood and schedule agreed (mainly if not transparent…)


Vacuum (TE/VSC)


No major intervention planned on vacuum chambers

Neon venting is mandatory Access to VJ for LUCID photomultiplier replacement Opening on C side

During Opening process (side C only) :o Release VT fixed point and supports use of motorized supportso Release of VA fixed pointso Participation to Small Wheel movement ; planned on Dec. 23rd o Participation to Calorimeter movement (compulsory) ; planned on Jan. 4th o Installation of mechanical protections (VA and VT) : week #1

During the Closing process : reverse operations (8-16 Feb.)

Ready for Neon pumping on Feb. 19th


Survey (EN-MEF)


Usual activities related to every YETS or Shutdown• Measurement of the network • Stability of ground • Stability of TX1STF• Maintenance of HLS system• Detector position measurement when they are back to RUN position• TAS position measurement and adjustment (if needed)• Liquid Argon stability at the very end of YETS


Transport (EN-HE)


Usual activities related to every YETS or Shutdowno Transport of equipment from B180 and B609 to Point 1: weeks 49-50o Work in 2 shifts on week 51 2x3 crane drivers

• Pits opening• Shielding lifting to surface• Light Truck installation

o Mobile crane to store concrete beams : 14-15/12/2015 o Reverse process from Feb. 4th, 2016o Various transport related to maintenance activitieso After YETS, transport of specific equipment from Point 1 to B180 and

B609


ALFA plans


On behalf of Sune JakobsenNew LVDT + electronics on A7L1L.(hopefully not new alignment)New crate for movement to reduce noise.Update of firmware for movement.

New movement/interlock commissioning.New and plus additional FESA.New trigger commissioning.

New vacuum pumps.Splitting DCS project in 2 (install new DCS PC).

Replace fan filters.Migration to 64 bit SBC.

Executables for PXI (automatic recovery after power cycle).

Final firmware and software for ALFA_CTPIN (if not implemented before).

Remove A7L1 for cleaning and aim for reinstallation end of YETS or a TS.

New firmware for MB + PMF (Kris request).

Worst case scenario (if UFO problems prosiest/enlarges):

Documents

Infrastructure activities planned on ATLAS during YETS 2015 Thanks to all the experts who contributed Bruno Saint Sulpice, Denis Dumas, Serge Deleval,