ALICE 5 o’clock meeting Wk 49 .

7/12/10 1

ALICE 5 o’clock meeting

Wk 49

http://indico.cern.ch/conferenceDisplay.py?confId=115692

7/12/10 5 o’clock meeting 2

Access requestCavern and surface

• You should submit an ADI and a task procedure

Two persons minimum

Work breakdown structure – risk associated at each step

ADIhttps://edh.cern.ch/Document/ADI

Task procedureTemplate EDMS 1103355

Attach task procedure


ALICE Christmas break schedule

OpenOpenExperimentExperiment

TRDTRDEMCalEMCal CloseClose

ExperimentExperiment

Open L3 doors

Close L3doors


UX25 access

Rules for access restrictions:Removal/installation of shielding (restriction includes RB24 triplets)

• PX24 blocks: no access CR5 and UX25• PX24 beams (35t): no access CR1-5, Expo, and UX-25• All other blocks: no access to UX-25

LHC evacuation test (7/12 after 18:00 and 24/12 tbc) – no access UX25Gas functional test (10/12 - 2 hrs) – no access UX25 and CR1-5AUG test (20/1) (Arrêt Urgence General – General Emergency Stop) – no access UX25DSO test (12-13/1) (Department Safety Officer) – no access UX25

No access SX2 during manipulation of blocks in SX2 (except ACR and WRs)


L3 (and MNF) access

NoVentilation

EMCal EMCal

EMCal

NoVentilation

+AUG

Wks 50 and 4: access (TPC) to be coordinated with TC (transport)

Wks 1-2: no access during EMCal SMs insertion inside L3 (see day-by-day)When moving from low-beta to yellow platform: no access to MNFWhen inserting the module: no access L3 and MNF

Watcher needed in wk 49 and from wk 4 onwards

Wk 6 or 7 (tbd): Kr calibration – TPC T stability (all interventions to be agreed by TC/RC)

24 31

Evac.

Day-by-day schedule

UX25 and MNF - Wk 49


• 18:00: end HI program– Ramp down both magnets. !!! Emergency dump !!!

• 18:00 – 22:00: access system test. No access UX25• 22:00: RPE survey (Jiri + 2nd person)

– Then go to restricted mode

Week 49 - 6/12 MondayProgram


Activities in UX25 - Week 49 - 6/12 Monday

No access UX-25 - possibility of access from 22:00

ITECO

HAULOTTE

TRD team at CERN: 6 to 10/12


• 8:00 - 18:00: UX25 cavern in Restricted mode– No access UX25 (except Transport, VAC, TC and RP)

• 8:30 - 9:30: RP liquid (and gas) sampling (Adeline, Pierre)– Collect RP samples (Fernando, Philippe)

– Survey L3 and Dipole

• 18:00 - 21:00: evacuation test – No access UX25• From 21:00 - Cavern in General mode

• 14:00 - 15:00: Portuguese Press visit. 10 persons

Week 49 - 7/12 TuesdayProgram


• ALTEAD: PX24 shielding blocks – top layer removed– 8:00 to 18:00: no access CR5

• Reinstall crane electronics - Problems (ongoing)• 14:00 to 15:00: put SM16 into the rotator - Ongoing• VAC: Neon injection preparation - Started

– Transport needed (EDH 4472100)

– Remove “green fence” (P2 technician)

• Stop flammable gases i-C4H10 and CH4 (Ar/H2 on 10/12) - Done• 8:30: Lock L3+Dipole power converter + compensator magnet - Done• Test transmission of alarm lift to FB• 8:30: inspection PHOS cooling plant (Arturo, Dominique, Philippe, Sasha) – Done

(will install temporary line)• 15:15: VIC SPD – Done + Gas VIC• DCS: 10:00 – 12:00, interruptions of the GPN link to/from P2 – Done. DCS got stuck.

Investigating why• MCR (Magnet Control Room): HW modifications (Pascal B.) – Started• TRD (after 21:00): Wiener PS back-plane modification and LV consolidation (L3)

Week 49 - 7/12 TuesdayActivities


Activities in UX25 - Week 49 - 7/12 Tuesday

8:00 to 18:00: no access UX25 (except Transport, VAC, TC and RP)

18:00 – 21:00: evacuation test (No access UX25)

VA

C

RP samples

PX24 shielding: blocks

TRD Wiener PS

TRD Wiener PS


• 8:00 - 18:00: UX25 cavern in Restricted mode– No access UX25 (except Transport, VAC, TC and RP)

• From 18:00 - Cavern in General mode

• 18:00: Confined Space Training– Tour in L3 at the end of the course

Week 49 - 8/12 WednesdayProgram


• ALTEAD: PX24 shielding beams (35t)– 8:00 to 18:00: no access CR1-5 and Expo– Stabilizers (after 18:00)– Move nacelle ITECO

• VAC: Neon injection

Activities after 18:00:

• EN-CV: empty TPC tank• TPC: replacement of damaged FECs (C-side)• TRD: Wiener PS back-plane modification and LV consolidation (L3)• SPD: cut inox pipes• Muon TRK: CROCUS firmware upgrade

• Muon TRG: Maintenance Local decision electronics and upgrade FE threshold distributors

• T0: investigation broken amplifier (MNF and L4-rack)

Week 49 - 8/12 WednesdayActivities


Activities in UX25 - Week 49 - 8/12 Wednesday

PX24 shielding:

beams (35t)

VA

C

8:00 to 18:00: no access UX25 (except Transport and VAC)

18:00 to 8:00: access in general mode

MoveTRD Wiener PS

TRD Wiener PS

Cut SPD pipes

Stabilizers

Muon TRG

TP

C F

EC

an

d

TR

D L

V

TPC cooling

Muo

n T

RK

: C

RO

CU

S f

irmw

are

upg

rade

T0


Activities in MNF - Week 49 - 8/12 Wednesday

8:00 to 18:00: no access UX25


T0


Activities in UX25 - Week 49 - 9/12 Thursday

VA

C

MNF shielding


8:00 to 18:00: no access UX25 (except Transport and VAC)

TRD Wiener PS

TRD Wiener PS

RAMSES: removal of Data Acquisition modules CR5

Stabilizers

No access CR1-5 during lifting up of 5 big beams

Interruption on auto-transfert network (from 07:00 till 07:05). No access underground

TP

C F

EC

an

d

TR

D L

V

EMCal team at CERN: fit rollers on all SMs

Muo

n T

RK

: C

RO

CU

S f

irmw

are

upg

rade


Activities in MNF - Week 49 - 9/12 Thursday




Activities in UX25 - Week 49 - 10/12 Friday

Move if needed

LV156

Gas functional test (2h no access UX25 and CR1-5)

Maintenance PX24 MAD (transparent)

MNF shielding

No access CR1-5 during lifting up of 5 big beams


8:00 to 18:00: no access UX25 (except Transport)

TRD Wiener PS

TRD Wiener PS

TP

C F

EC

an

d

TR

D L

V

EMCal team at CERN: fit rollers on all SMs

Muo

n T

RK

: C

RO

CU

S f

irmw

are

upg

rade


Activities in MNF - Week 49 - 10/12 Friday




Activities in UX25 - Week 49 - 11/12 Saturday

LV156

MNF shielding


8:00 to 18:00: no access UX25 (except Transport)

TRD Wiener PS

TRD Wiener PS

TR

D L

V


Activities in MNF - Week 49 - 11/12 Saturday




Activities in UX25 - Week 49 - 12/12 Sunday

Access in general mode


Activities in MNF - Week 49 - 12/12 Sunday

Access in general mode

Services interruption


Maintenance gas systems

Functional tests

New gas monitoring

13-15/12:• Stop N2, CO2, Neon, Ar and C2H2F4 (24 hours max N2, CO2 and Neon)• TRD backup (N2 bottle in CR5) – HMPID backup (Ar bottle in SG2)

13


Gas system status over Christmas

Albin

• TPC & TRD: ON• TOF: ON – stop from 12 to 21/1 (cooling stop, KNF pump stopped)• HMPID: ON (Ar backup)• PHOS: N2 flushing• PMD: ON (except wks 1-2 – gas stop)• Muon TRK: backup CO2• Muon TRG: backup Ar

• No flammable gases from 7 Dec until 21 Jan PM (after maintenance L3 ventilation)


Maintenance cooling unitsCooling Plants and Primary Network

Cooling towers

Maintenance on production network. No primary water from 12/1 (PM) to 21/1CR1-2-3, the Wiener PS and detector cooling plants affected (plants can RUN, but no cooling power). Part of DCS will be kept running

Maintenanceand

consolidation

17

21

12

TOF/PHOSEMC

HMPID

SPD

TPC

TPC 10

Maintenance on cooling plants. Replacement of pneumatic actuators for TOF/TRD/TPC plants + TOF/PHOS flowmeter. CP will be stopped during maintenance

SSD/SDD

TRD


Maintenance ventilation units

SG2

UX25, Muon

TRK-TRG

17

12

UX25, Muon TRK-

TRG

L3


Safety and electrical systems

PX24 fire detect.20

UX25 fire detect. + red phones

UPS UPS

AUG

UPS

DSO

Evacuation

DSSSNIFFER mainten.Auto-transfert

Evacuation

Evacuation

Early morning/late evening (tbc)


• LHC evacuation tests (7/12 after 18:00 and 24/12 tbc)

– no access UX25

• EN/EL: interruption on auto-transfert network (9/12 from 07:00 till 07:05):

– All 'normal power‘ will be cut for 5 minutes: wall outlets, non-UPS in the ACR, SXL2, non-UPS power for the cooling plants, gas systems

– It will not affect the 'machine network‘ (all racks will remain powered (part of the 'EXD', machine, network)

– This network also provides the power to the UPSes, so they will run on battery for the time of this cut

– See https://edms.cern.ch/file/1106913/1/ENNC_2010_196.pdf

• EN/EL: AUG Test (20/1) (Arrêt Urgence General – General Emergency Stop)

– Major electrical perturbation. Also ACR affected

• DSS modification (13/1)

– Will stop the full DSS, trigger all interlocks, including stopping power to all racks

Safety and electrical systemsImpact on ALICE

https://edms.cern.ch/file/1106913/1/ENNC_2010_196.pdf


DAQ upgrade plans• 21st Dec PM till the 04th Jan included

– The DAQ will be OFF during the CERN closure.– The ACR PCs will be left ON to give access to the DCS for the detectors teams

who need it.• 5th to the 11th of January included

– DAQ restarted on the first working day for 1 week. The DAQ will be switched ON with the present version of all software. Allow a quick commissioning after the installation of new detector modules or the intervention on existing detectors.

• 12th to the 23rd Jan included– The DAQ will be OFF during the cooling interruption at P2.– DAQ renovated (see TB December)

• 24th January– The DAQ will be ON again. It will run under SLC5 64 bits unless there would be

an unexpected key problem.

• The electronic logbook will remain available during the whole period. When the DAQ will be OFF, it will be running in the DAQ lab in Meyrin. There will be a few hours of interruption to switch from P2 to Meyrin and back.

Pierre/Uli


DCS plans

• Baseline: DCS will be operational all times where technically possible– With ‘best effort’ support– With access restrictions during CERN End-of-Year closure (22/12 – 4/1)

• Many activities and upgrades are planned– Will be coordinated with individual detectors to minimise impact– For central systems, as much as possible in shadow of other perturbations (e.g.

cooling stop)– Perturbations (e.g. for reboots etc.) cannot be excluded

• Detectors are invited to communicate ‘critical periods’, with services needed– Will try to cater for detector needs as much as possible

• Known perturbations:– Tue 7/12 10:00 – 12:00, interruptions of the GPN link to/from P2

• Upgrade of router, test impact on ALICE

– Wk50 (13-17/12) – major updates to all PC (many perturbations to be expected) – 12/1 – 21/1 (cooling stop), only minimal central services. All detector DCS

switched off, except for special requests and if cooling power allows

• More detailed planning at weekly and daily meetings

André / Peter


DCS plans

• Wk 49– Tue 7/12 10:00 – 12:00: interruptions of the GPN link to/from P2

• No connectivity on GPN (mail on laptops etc.); could have impact on running systems (is the main reason for this test: try to spot dependencies)

• Done – switch upgraded to 10x higher bandwidth; experienced blockage of DCS; to be investigated more tests needed later.

– Wed 8/12 – Fri 10/12 (daytime): SW upgrades and patches to central systems, to detectors on request only (Operating system and PVSS)

• Systems unavailable for short (~hrs) periods, frequent reboots

• Wk 50– Mon 13/12 – Tue 14/12 (daytime): Force upgrades and patches to all remaining

systems• Systems unavailable for short (~hrs) periods, frequent reboots

– Support to detectors restarting/testing their systems after upgrades• Detectors shall test functionality as much as possible

• Wk 51– Tue 21/12 PM: Limit access to DCS cluster during end-of-year closure

• Register with your SRC if you require access (see message Peter 2/12/2010)

André / Peter


Magnet control upgrade

• Wk 49: nous devons intervenir dans la MCR pour:– changement des alimentations 24V et 48 V des systèmes MSS et MCR (préventif)– changement des modules convertisseurs PT100 des hots points du Solénoïde (correctif suite à deux

incidents ayant entrainés l'arrêt du Solénoïde) et en UX25, comme Philippe Bouvier l'a déjà signalé:– recâblage des AU du dipôle et du Solénoïde– signalisation du champ magnétique du dipôle et du Solénoïde

• Nous étudions toujours une solution pour le monitoring des températures du Solénoïde.• L'arrêt de fin d'année va permettre de faire une meilleure approche de ce qui est existant en

UX25.

• En ce qui concerne l'alimentation électrique de la MCR, nous dépendons actuellement d'une seule source de courant sous UPS avec secours diesel.

• Afin d'établir une redondance pour l'alimentation de la MCR je souhaiterais installer une seconde source d'alimentation sous UPS.

• Je sais qu'une étude est faite à ALICE pour augmenter la puissance des UPS existants en 2012.• Je souhaiterais que cette demande soit incluse pour le calcul de puissance des nouveaux UPS

(besoin pour la MCR: 16A en monophasé)

Pascal


AOB

• SLIMOS

ALICE 5 o’clock meeting Wk 49 .

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