ISOLDE Technical Coordination Meeting

Tuesday 22 Jul 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)

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_wk29 - ITM.docx

ISOLDE_wk29 - ITM.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)

  

Last Week

• Separation of Ra-223 from 1st batch Indian ThC (#887M)
  • 43.5 MBq collected
  • No other radiochemical contaminants found in gamma-spec
• Continued with Ra-224/225 double collection over weekend
  • Heating ramp again did not finish and software crashed on both MEDICIS CWO computers.
• Target presence switch caused target and Frontend vacuum trips over weekend and tuesday

 

This Week

• Outgassing of 2nd batch Indian ThC (896M) for testing and collections
• Mass scan MD
  • Data gathering Use NEW mass scan at 3 speeds: slow 0.03 amu, medium 0.05 amu, and fast 0,07 amu to check mass alignment.
• Open collection chamber shielding to access Kromek detector and test collimators - Wednesday morning.
• Separation of Ra-224/225 double collection from FLUKA charge (#880M)
  • Irradiation might risky for shipment samples - more updates tomorrow
  • Ideally would need around or >1E+18 PoT direct
• Ra/Ac225 radiochemistry with HUG in Glovebox Thursday morning

 

Next week

• Shipping of Ra-223 to Rennes, France - monday
• Shipping Ra-224 to Dresden, Germany and Ra-225 to CMI Czech Republic
• Irradiation opportunities to collect Ra-225 for Ac-225 build-up.
  • Targets TBC.
  • Test 2nd batch Indian ThC + Ra collection

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

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

Physics

• At GPS, the HIE-ISOLDE run continued involving a post-accelerated ²²⁹Ac beam on a deuterium target at ISS. However, based on the observed intensity and contamination of the ²²⁹Ac beam, the team decided to switch to plan B: using ²³²U. This allowed them to demonstrate the setup’s functionality, collect data for a technical paper for the PhD students, and obtain the necessary input to evaluate what would be required to make a future ²²⁹Ac run feasible after LS3. Despite several issues, they managed to get sufficient data for these purposes.
• On HRS, CRIS took 1 night of beam to test their new tapestation, which went well.

 

Schedule

 

 

 

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

Speaker: Oscar Fjeld (CERN)

Finished requests

• SPEDE Cooling - Finished
• Aid for PUMA - Finished
• ISOLTRAP:
  • Change air compressor connector 
  • Remove turbo pump

 

New requests 

• Procurement of cutting tools for machines in 508 workshop
• Closing flange for SPEDE chamber
• Secure gas bottles 
• Move RP source safe 

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)

• Visit with Didier Gonnard HSE to gas point/dewar storage after incident last week
  • Need additional barriers on the parking lot/sidewalk to avoid problems in the future
    • Organise meeting with ?
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