Infrastructure activities planned on ATLAS during YETS 2015 Thanks to all the experts who...
-
Upload
bethanie-walters -
Category
Documents
-
view
219 -
download
0
description
Transcript of Infrastructure activities planned on ATLAS during YETS 2015 Thanks to all the experts who...
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 infrastructure activities during YETS 2015 3
ATLAS overview
M. Raymond - 02 Octobre 2015
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
ATLAS infrastructure activities during YETS 2015 4
What does it entail ?
M. Raymond - 02 Octobre 2015
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.
ATLAS infrastructure activities during YETS 2015 5
AFP installation
M. Raymond - 02 Octobre 2015
• 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
ATLAS infrastructure activities during YETS 2015 6
AFP installation (2015-2016)
M. Raymond - 02 Octobre 2015
• 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
ATLAS infrastructure activities during YETS 2015 7
Electricity (EN-EL)
M. Raymond - 02 Octobre 2015
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
ATLAS infrastructure activities during YETS 2015 8
Electricity (EN-EL)
M. Raymond - 02 Octobre 2015
Interventions Consequences Compensatory measures Duration Tentative schedule
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
ATLAS infrastructure activities during YETS 2015 9
Cooling and Ventilation (EN-CV)
M. Raymond - 02 Octobre 2015
Interventions Consequences Compensatory measures Duration Tentative schedule
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
Chiller CNGS (700 kW)No backup on pump, electrical power cut must be avoided
4 weeks 15/01To be better defined
USA15 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
Ventilation maintenanceNo stop, redundancy affected,
perturbation expected on temperature, humidity and
pressureNone ? Parallel to cooling
ATLAS infrastructure activities during YETS 2015 10
Cooling and Ventilation (EN-CV)
M. Raymond - 02 Octobre 2015
Interventions Consequences Compensatory measures Duration Tentative schedule
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
ATLAS infrastructure activities during YETS 2015 11
Cryogenics (TE-CRG)
M. Raymond - 02 Octobre 2015
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.
ATLAS infrastructure activities during YETS 2015 12
Access & safety systems (GS-ASE)
M. Raymond - 02 Octobre 2015
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…)
ATLAS infrastructure activities during YETS 2015 13
Vacuum (TE/VSC)
M. Raymond - 02 Octobre 2015
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
ATLAS infrastructure activities during YETS 2015 14
Survey (EN-MEF)
M. Raymond - 02 Octobre 2015
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
ATLAS infrastructure activities during YETS 2015 15
Transport (EN-HE)
M. Raymond - 02 Octobre 2015
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
ATLAS infrastructure activities during YETS 2015 16
ALFA plans
M. Raymond - 02 Octobre 2015
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):