ISOLDE Technical Coordination Meeting

Tuesday 26 Aug 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_19_08_Draft.docx

minutes_2025_19_08_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 Report week 34 2025.docx

ISOLDE Report week 34 2025.pdf

Enquire about YGPS.BFC4900 readinness for possible replacement and possible scheduling windows.

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

• • Shipping:
    
    • Eu-145 to NPL, UK
  • Cu-67 development run
    
    • Cu-63/65/67 beams observed already at ~1100 oC.
    • Target vacuum limitations. 
  • Direct irradiation of TaC VD-5 target
  • Tb-149/155 development run from Wednesday
    
    • Few tens of kBq collected as 149TbF2+ molecular ions
  • Ra/Ac-225 radiochemical separation development

 

This Week

• Shipping of Ra-225 to KUL, BE
• Tb-155 development run
  • TaC VD-5 target #895M
  • Finished today
• Intervention in S-3 by Abel to replace the cooling fan of MEDICIS target section turbo pump. 
• #865 UCx target test on FE and irradiation for Cu-67 development run
  • Cu-67 development run on thursday
  • Laser ionization
• Setting up for Yb-175 ampoule receiving and transfer.
  • Cold test towards the end of the week.

 

Next week

• • Cu-67 run continued until monday-tuesday
  • #885M Ta foil target direct irradiation Tuesday-wednesday (2-3rd September)
    • Place the target in HRS already this week - TBC
    • Tm-165 collection for PRISMAP user
    • Run begins on Wednesday the 3rd
  • Yb-175 ampoule receiving on Wednesday the 3rd - (R-002 in B.179)
    • Decontamination and transfer on 3rd 
    • Loading in the container and on FE on Friday the 5th. 
    • Collection over weekend with supervision from ISOLDE control room. 

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, neutron-deficient Cd isotopes were delivered to the MIRACLS setup to perform laser spectroscopy in an MR-ToF device around the doubly-magic ¹⁰⁰Sn region. The setup is very complex, combining two experimental techniques into one in order to reach very exotic nuclei, the result of more than a decade of dedicated development. After their very first successful experiment last year, the current campaign on Cd isotopes marks only the second, and at the same time the final, opportunity to exploit the setup before it is dismantled in the autumn to include it in the PUMA preparation beam line. In this context, the availability of 2.5 μA was absolutely crucial: the additional yield provided just enough statistics within the short time window during which all parts of this very complex setup were optimised at exactly the right moment, making the measurement of ⁹⁸Cd feasible. The team is very grateful for this support during this last chance.

Schedule

• 1.7 GeV runs:

  • IS581 - 226Rn - XT03
  • IS690 - 11Be - SEC (10/10 - 20/10)
  • IS764 - 8Li to VITO  (14/11 - 17/11)
  • LOI171 - 17F - COLLAPS (24/11 - 27/11)
  •  
• 2.5 uA runs:
  • IS772 - 99, 100 In - CRIS (15/9 - 24/9)
  • Maybe: 1/12 - 5/12 - two parallell runs
    • GPS: 111mCd - GLM
    • HRS: IS768 - 69-74Ni
• Collection of 134Cs and 137Cs (~10E9/uC) during IS709 (~8h on 15/9)
• Wisards plans:

- in the week from September 21 to 26 (without magnetic field),

- somewhere at the end of the protons this year (december, with magnetic field),

- in March/April 2026 (with magnetic field).

--> Keep Magnetic field on

 

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

Speaker: Oscar Fjeld (CERN)

Last week:

• IS681 sample holder
• Modification of gate 
• Faraday cup holder - SPEDE
• Flange machining - DNP

Next week: 

• Machining Alu - VITO
• Bearing encapsule DVC support - Solid State

New requests:

• Replace lightbulb fume hood - GLM
• Adapters for ISOLDE LN2 Dewars
• Fixing plate on gas point 

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)

• To announce scafolding work at the hall entrance planned on the 01/09. Impact on crane use.