ISOLDE Technical Coordination Meeting

Tuesday 2 Dec 2025, 14:00 → 15:00 Europe/Zurich

37/R-022 - 37/R-022 (CERN)

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

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

minutes_2025_25_11_Draft.docx

minutes_2025_25_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 48 2025.docx

ISOLDE week 48 2025.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

• Last Tb-155 run of the year happened last week with the new target material developped by Patricija (TaC-carbon nano tubes).
• This week we have the ThO2 from SCK CEN back on the FE as part of the PhD of Lisa GUBBELS on Ac-225 production.
• We have #805M being parasitically irradiated for a new Sc-47 run.
• The Sc-47 will be shipped to LV for the 1st time.
• We will place a target to catch the last indirect protons until 08th of Dec to pill-up long half life RN activity for next year operation.
• On Friday we receive an external source of Sm-153 from POLATOM for a last mass separation of this RN that will be shipped to Heidelberg in Germany.

 

b.179

• Gas point
  • Temporarily not accessible for a few days.
  • If anyone needs access urgently, please let me know and we can make something work. 
  • The work site manager has been informed to please provide more notice if they block this again in the future.
• Issues with door between R-201 and R-101
  • This has been fixed
  • If anyone notices it is not closing properly, let me know and I will get in touch with access control

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

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

Physics 

• On GPS, the goal was to measure the mean square charge radius of ¹⁷F via laser spectroscopy at COLLAPS. A development target was used meaning the yields and the level of contamination were not certain beforehand. COLLAPS also used a new experimental setup was. In general, they faced several challenges with higher than expected stable contamination and a number of interruptions due to issues at ISOLDE. After a first measurement of one ¹⁷F peak, they concluded that a full hyperfine spectrum would be  out of reach and stopped the run one night before the planned end. Nevertheless, they did not leave unhappy, since they gained valuable knowledge that will help them tackle this case successfully after LS3.
• On HRS, neutron-rich Ni beams are being studied via laser spectroscopy in the context of nuclear structure evolution around N = 40. A special LIST target was used to reduce the expected Ga contamination, although it also reduces the Ni yield, and the PI LIST mode allows for high resolution in source laser spectroscopy which is important for medium mass nuclei such as Ni. With yields that are orders of magnitude lower than expected and several issues, the full programme will be out of reach but it seems that new physics can be obtained on 69Ni.

 

Schedule

🏁🎄🎁🎅🏁

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

Speaker: Oscar Fjeld (CERN)

Last week:

• Rubber gasket 
• 3D print ongoing for IDS
• reception of chemical cabinet 

 

Next week:

• Machining job VITO
• 3D Print for IDS

 

New jobs:

• Machining job VITO

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)