ISOLDE Technical Coordination Meeting

Tuesday 25 Nov 2025, 14:00 → 15:00 Europe/Zurich

508/1-001 (CERN)

14:00 → 14:05 General news, agenda review, minutes approval

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

minutes_2025_18_11_Draft.docx

minutes_2025_18_11_Draft.pdf

14:05 → 14:20 Operation Report - REX/HIE ISOLDE update

Speakers: Alberto Rodriguez (CERN), Eleftherios Fadakis (CERN), Emiliano Piselli (CERN), Erwin Siesling (CERN), Joachim Vollaire (CERN), Miguel Luis Lozano Benito (CERN), Simon Mataguez (CERN)

ISOLDE week 47.docx

ISOLDE week 47.pdf

14:20 → 14:30 RILIS report

Speakers: Anjali Ajayakumar, Cyril Bernerd (CERN), Joachim Vollaire (CERN), Jordan Ray Reilly (The University of Manchester (GB)), Katerina Chrysalidis (CERN), Manikanta Elle (KU Leuven (BE)), Reinhard Heinke (The University of Manchester (GB)), Sebastian Rothe (CERN)

14:30 → 14:40 MEDICIS & Building 179

Speakers: Charlotte Duchemin (CERN SY/STI/RBS), Edgars Mamis, Joachim Vollaire (CERN), Laura Lambert (CERN), Manikanta Elle (KU Leuven (BE)), Matthieu Deschamps, Patricija Kalnina (University of Latvia (LV)), Ralf Erik Rossel (CERN)

MEDICIS

• There was a Sc-47 run from TiC-nano last week. Unfortunately the run was cut while the collected activity was nicely raising, because the target failed due to the power cut on friday afternoon.
• A Tb-155 run ongoing thanks to the indirect irradiation we got before the HRS BTY line magnet issue.
• We would like to bring #921M (re-irradiation of ThO2 SCK CEN target) after the target change on HRS and stay indirect.

 

b.179

• Gas storage
  • Old gas storage dismantled
  • Temporary metal crates to the left of the main entry. One for full bottles, one for empty ones.
  • 1m wide walkway remains between the building and the barriers in place so the gas point remains accessible 
• CV during IBDRS works
  • MELISSA vents will be closed off with plastic and a metal plate on top to ensure fully sealed
  • Equipment on roof will be checked once or twice a week during works, if filters require a change, will request for RP to perform checks beforehand
• Visit from IAEA tomorrow

14:40 → 14:50 Targets, Schedule and Physics

Speakers: Hanne Heylen (CERN), Isabel Frank (CERN), Matthias Alexander Grasser, Simon Thomas Stegemann (CERN)

Physics

On HRS, post-accelerated ⁶⁶Ni beams were sent to the Scattering Experiment Chamber on the third HIE-ISOLDE beam line. This was the final HIE-ISOLDE run of the year. The aim was to study quasi-fusion and fusion reactions of ⁶⁶Ni on a ²³⁸U target, forming a compound state with Z = 120 protons, which is predicted to lie in the so-called island of stability for superheavy nuclei. This region is normally out of reach at ISOLDE and the goal was not to produce such nuclei, since the cross section is extremely small and would require months or even years of beam time. Instead, the idea was to study the decays following quasi-fusion and fusion and use these to infer properties of the briefly formed Z = 120 compound state, which exists for less than E-20 seconds. The experiment started well, although they struggled with low count rates. After the power cut, only stable 58Ni beam was available, but they continued regardless since this was the first time their setup had been used and it allowed them to collect valuable benchmark data. Thanks to everyone who worked over the weekend to get beam back for them.

 

Schedule

- Date for review not on Tuesday 16/12

14:50 → 14:55 Hall activities / Mechanical workshop requests

Speaker: Oscar Fjeld (CERN)

Last Week:

• Configuration of new 3D printer
• IDS drilling holes for laser alignment support
• IDS modification of T piece - faraday cup
• Gas racks distributed in the hall
• Cleared out space for nacel

 

Next Week:

• Rubber gasket Joao Correia
• Adapters for chemical cabinet
• Covers for germanium detectors

 

New requests:

• Follow fabrication and installation of new ISOLDE logo
• Aid for Miniball dismounting 

14:55 → 15:00 Safety, AOB, visits

Speakers: Alexander Schmidt, Alexandre Dorsival (CERN), Elodie Aubert (CERN), Hanne Heylen (CERN), Line Le, Melania Averna (CERN), Mia Au (CERN), Nadine Conan (CERN), Oscar Fjeld (CERN), Simon Mataguez (CERN)

cables ITC meeting.pdf

cables ITC meeting.pptx

RILIS lab upgrades - cables

• We need to identify / remove / temporarily suspend all the cables above and below the RILIS structure, those of you who know you have cables there, can you please contact Laura Lambert, and we can make a visit on site together to identify them so we know how to proceed.