ISOLDE Technical Coordination Meeting (LS3)

Tuesday 8 Sept 2026, 14:00 → 15:00 Europe/Zurich

508/1-001 (CERN)

14:00 → 14:05 General news - Review of minutes

Meeting on the 15/09 is cancelled !

Speakers: Erwin Siesling (CERN), Hanne Heylen (CERN), Joachim Vollaire (CERN)

Link to last week minutes

14:05 → 14:15 Safety matters

Speakers: Andreas Herty (CERN), Hanne Heylen (CERN), James Devine (CERN), Joachim Vollaire (CERN)

From A. Herty (DSO BE): (in the frame of the access to the ISOLDE target zone for ulling cables on 16/09):

Pour votre information, la procédure d’un accès via une porte fin zone vient d’être mis à jour. 

 https://edms.cern.ch/document/2902030/1.3.

 

C2E (Charge d'Exploitation Electrique):

• Electrical safety role under CERN's electrical safety project (ESP): installation authority, hazard management & lockout operations
• E. Siesling for the ISOLDE expreimental hall 170.
• C2E for the target & primary areas will be appointed by SY/STI

14:15 → 14:20 IBDRS project update - Work in the primary areas - BTY line @ 2 GeV

Speakers: Ana-Paula Bernardes (CERN), Joachim Vollaire (CERN), Melania Averna (CERN)

Target zone installation of cables (16/09): Need to open the emergency door (Democrite site)

• In agreement with A. Herty (DSO BE) and N. Conan (RP):
  • Ouverture de la porte rouge d’évacuation de la zone cible Isolde par RP le 16.09 (appel préalable à la CCCPS pour anticiper l’alarme).
  • Une personne RP reste sur place le temps avec EN/EL le temps de l’intervention  (1m derrière cette porte – en haut de l’escalier de l’issue de secours => aucun accès dans la zone cible) et referme la porte dès le travail effectué.
  • La CCCPS sera avertie de la fermeture de la porte.

 

 

197 BTY & Separators Power supplies consolidation:

• • Phase 2: Adaptation of the floor for the new rack configuration can start: 2wks of work in October
  • Asap: Core drilling for CV (SCE for A. Fournier) followed as of 05/10 with reinforcement of the 197 false floor (S. d'Armancourt), followed by:
  • CV work as of 19/10 (A. Fournier), AC cabling (P. Gallay), DC cabling
  • Remaining cupboard EPC - J. Parra-Lopez will be contacted

 

Infrastructure / cooling and chilled water cut (IBDRS related) (dates:  11/09 (wk 37)   -  May '27 ?  ):

• Scaffolding on the 170 wall side reception 09/09.
• Cooling will be stopped (slightly later than planned) end of wk37 (11/09)
• Pipes will be cut and removed between 07-22 /09 (Cranes avilability)
• Scaffolding dismantling foreseen 23/09 onwards.
• Installation for the chilled water supply to 508 is foreseen for wk 38 (14 Sept) -> AC in 508 is expected to be back in operation in wk 39/40 (end Sept/beginning Oct).
• For the machine - return of cooling water:
  Timeline fits with Cryo tests foreseen Q4 2027 in the frame of the integration of the LHe dewar and restart of the Cryo plant - 27 demi cooling water needed (N. Guillotin, T. Dupont)

14:20 → 14:25 RILIS Laboratory upgrade project - Exhaust gas line re-routing - activities update

Speakers: Carlotta Porzio (CERN), Katerina Chrysalidis (CERN), Laura Lambert (CERN), Sebastian Rothe (CERN)

14:25 → 14:35 Machine related activities in the experimental hall

Speakers: Erwin Siesling (CERN), Simon Mataguez (CERN)

 

Compressed air cut Wednesday Sept for 3hrs:  time 8 - 11h - (Alexandre Fournier)

• Transparent, normally no impact
• VSC, BI and Cryo informed: No impact expected.
  
  

Request Bernard Crepieux: Nr of He gasbottles at ISOLDE (ISCOOL) on his name?

• Action Erwin/Miguel
  
  

Overhead crane PR214 preventive maintenance Friday-morning 09/09  8h30-12h

• Will take place on the SAS tranpsport side and the crane access platform. No impact on visits.

 

Platform EPC:

• Reception of the 400 cables to be done (status?). Due to non-available resources this will not be finsihed before wk 38 (14 Sept) - final handover and dossier. 
• With the RILIS rerouting of the vacuum tubes starting end Nov till May 2027 the time for HWC and tests by OP will be limited.

 

REX/HIE ISOLDE: 

• REX/HIE LINAC:
  - On the list: replacement prim. pumps CMs, backing & roughing lines - Oct/Nov (after LHC LS high peak work).
  - Ongoing: Modification of the chamber of the XL9GP Quad (last in REX LINAC before CM1/DBox) (N. Thaus TE/VSC). 
  - The XL9GP Quad does not need to be taken out if the new chamber can be welded in situ and modifs (info N. Thaus & A. Newborough), The Quad was refurbished in 2015.
  - Modifications on the existing classified as contaminated vacuum chamber to be done in 109: No availability of the tooling for the moment: Schedule wise ok with the chamber to be back in the machine only next summer latest.
  - Additional NEG pump is to be added onto the XLN2 DBox: After re-installation end of '27.
  - Replacement of the 9 GAP structure vacuum seal to be scheduled with RF, transport and vacuum: This will require a sector opening of the REX/HIE tunnel roof to allow crane acces to lift the 9 GAP cover.
  
  
• REX Low E development:
  - Replacement of the leaking REX mass slits actuator for a bellow type one - actions in the direction of a remotely controlled version have been taken. Christoph Mitifiot has been contacted and a meeting is se for 14/09 to see in situ to discuss options and the integration of the equipment (PLC controller, etc.) (Fredrik Wenander)
• Work on the REXTRAP innner structure planned to start in October (J. Schoonwater), surrounding work permitting (coordination with the RILIS team ongoing). Request for workspace in 179 to finalize next week when L. Lambert will be back (L. Lambert, V. Berlin, F. Wenander, J. Schoonwater)

• BI work in the allocated test bench zone (between XT02 and 03) is starting. For the dismounting of the various D-Boxes for calibrations and modifications MSC (Antony Newborough) has been asked to disconnect the DC, water and WIC connections of the 13 D-Boxes in question.

 

Separator zones HRS & GPS:

• --

Fiber Optics work:

• 2nd phase of the White Rabbit fiber optics installation (N. Simic) postponed to 14/06/27 - 25/06/27

 

IT cable work:

• Wk 41 (05/10) installation work is forseen of IT cables for the deployment of the radiation monitor system in the PUMA area. Cables will be crossing over the (beam) entrance side of the REX/HIE tunnel for which a cherrypicker is foreseen (Lucas Correia IT/FCS)
• Still valid: Remark from the IT/FCS section: please collect any possible future IT cable requests using the same routing to optimise the availability of the team and equipment for the existing cabe request.
  
  

Fume cupboard exhaust GLM/GHM zone:

• Timeline: in the cause of '26

14:35 → 14:40 Experiments related activities in the experimental hall

Speakers: Hanne Heylen (CERN), Oscar Fjeld (CERN)

Upcoming 

• Week of 21st of September - ISS He-fill - need space in SAS and HIE-ISOLDE, no need for crane

14:40 → 14:45 Experiments related activities in the experimental hall

Speaker: Erwin Siesling (CERN)

ISOLTRAP:

• Finilazing the platforms and walls as well as re-installation of infrastructure and equipment is ongoing (A. Jaries)
• Emergency ladder on the mezzanine side is in place. Advice J.Devine is to eventually move the cable/tubes tray down - to be investigated.
  
  

COLLAPS/CRIS platform:

• COLARIS platform integration well advanced (Vincent Barozier, Liss Vazues Rodriguez, Kara Lynch)
• Proposal to reuse some of the 80x80 concrete blocks (with side re-enforcing plates) to construct a single pillar to hold the experiements laser mirror boxes. Integration and feasibility being studied (V. Barozier, M, Guinchard, J. Devine).
• The AC units in the laser labs will be connected to the existing chilled water. In a first stage the circuit towards RILIS will be changed to a larger diameter and in a second stage the tubing towards the laser cabins will be installed. The first stage will be scheduled for the beginning of '27 in coordination with the RILIS project. Budgets for the equipment and different stages will/have been allocated.
• Existing concrete pillars and walkway to be removed towards the end of '26 - to be discussed with Y. Seraphin.
• Timeline COLARIS platform: CE design and quotation by the end of the summer, ECR ready by the end of the year, start platform construction Jan '27

 

Beamlines:

• RC6/RL7 installation work continuing
• Cabling work in the RC6/RL7 area has finished (J. Allamandy). Reception to be done + dossier handover to EPC (wk 38)
• EN/EL AC cable work was supposed to start end of Aug wk33/34 however due to illness within EN/EL this has been postponed - Difficult to reschedule due to LS3 work elsewhere by the contractor. Effort will be made to have the same contractor to install the AC cables. With budget availability in mind the work needs to be done within '27. EN/EL is looking into a solution.
• IT cabling for the PUMA related radiation monitoring system foreseen wk 41.
• New PUMA RP monitor at the end of RC6 will be a permanent installation where as the monitor next to the PUMA solenoid will be a portable unit taken in account the number and duration of the short periods the PUMA setup will be in place each year (RP, TC, Miniball team)

 

IDS:

• In the frame of the upcoming 228Ac test at IDS a solution was found in routing the exhaust gasses outside the hall. The old obsolete XT03 temporary (flamable) gas line tube has been rolled back towards IDS and the missing 20m will be added to reach the IDS setup (O. Fjeld). Tube expected to be fully installed by next week. RP (N. Conan) approved.
• Request from the IDS team (James Cubis) to have some long existing issues at the IDS beamline addressed during LS3:
  - the rigidity of the beamline support before their chamber
  - a standard DBox in their line (replacing the non-standard one)
  - a thorough fix of the ISOLDE PAM readout electronics used for their in-chamber FC
  Above has been briefly discussed and is to be seen with resources within the BI team.

 

 

14:45 → 14:50 Mechanical Workshop and other support requests

Speaker: Oscar Fjeld (CERN)

Last week 

• Cover area under RILIS platform with plastic 

 

 

 

 

 

 

 

 

 

 

• Pulled temp exhaust to IDS 

 

• LN2 at ISOLTRAP

 

• Signs mounted in the ISOLDE corridors b26 and 3 

 

 

New requests :

• Machine missing Alu piece for quad doublet - Fredrik Wenander

 

 

 

14:50 → 14:55 LSA at ISOLDE

Speakers: Emiliano Piselli (CERN), Erwin Siesling (CERN)

ISOLDE_LSA_EP.pdf

ISOLDE_LSA_EP.pptx

14:55 → 15:00 Planned visits and AOBs

• Removal of temporary ramp 508: the 21/09 and the 02/10
• Meeting to find location of new chemical fumehood in the ISOLDE hal

Speaker: Hanne Heylen (CERN)