ISOLDE Technical Coordination Meeting

Tuesday 1 Jul 2025, 14:00 → 15:00 Europe/Zurich

508/1-001 (CERN)

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

• Minutes circulated for review

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 week 26 Monday 30_06_2025 for ITC.docx

ISOLDE week 26 Monday 30_06_2025 for ITC.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)

Last week : Yb to Miniball

Restart after the stop was smooth laser-wise. No need to intervene, Erwin opened the laser shutter and the beam was there.

 

This week : Po to CRIS

Switch of lasers on Thursday and Friday. 
Optimization on 200Po performed by Reinhard last night. Everything smooth. Ready to go back when needed from CRIS. 

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

• Ra-225 collection from #880M ThC (Fluka) target 1/2
  • 46 MBq already collected
• 2nd batch Indian ThC target preparation for irradiation - loading and outgassing
• ISOLDE target irradiation on HRS Low trolley

 

This Week

• Ra-225 continued 2/2 collection for US
  • Shipment dispatched monday afternoon
• Irradiation of ThO target #742M - indirect
  • Test Ac-226 collection
  • Baseline for ThO target development together with SCK-CEN (august)
• TaC VD-5 target preparation for next week

 

Next week

• TaC VD-5 target irradiation monday-tuesday
• External collaborator from NPL UK (Sean Collins) at CERN-MEDICIS
  • Ac-226 measurement if MD is successful
  • Tb-149 collection and measurements
• 2nd batch Indian ThC target irradiation for Ra-223 collection and possibly Ra-225.

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 ¹⁶²Yb experiment at Miniball continued for approximately two more shifts after the technical stop, which allowed for a complementary measurement with a different technique as compared before the technical stop. Despite the PSB only restarting late in the evening following the technical stop, the experiment still succeeded in collecting a reasonable amount of statistics. This was also made possible thanks to the derogation from Radiation Protection, which permitted a temporary increase in radiation levels.

• On HRS, the objective was to carry out two short runs using ²²O beams for IDS and ¹⁷N beams for TAS. Unfortunately, these beams were not produced from the target, but the experiments were able to measure some physics with the noble gas beams that were produced instead. These runs had already been scheduled as a replacement for a cancelled experiment, which is why the beams were planned with a greater level of uncertainty regarding their production. Earlier in the year, at two different occasions we had foreseen yield-checks for thes isotopes but in the end, this time was shifted to physics

 

Schedule

• Tapestation intervention on Monday 7/7?
• Circulated draft of the schedule until the end of the year. Not fully happy with it so might have to reiterate after receiving feedback from technical teams.
• Modifications of existing schedule:
  • Addition of collection of pre-irradiated target starting 5/8 of the already published schedule
  • Addition of 2 shifts to CRIS on 21/7 to test their decay station
  • 

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

Speaker: Oscar Fjeld (CERN)

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)

• Intervention GLM fumehood on Thursday 3/7: https://impact.cern.ch/impact/secure/?place=editActivity:256089
• Oscar as Flammable Gas Line responsible clarification:
  • Also responsible for purging the line etc.
  • Will need to follow the ATEX courses
• Nous devrions ouvrir aussi une trappe en proximité d’Isolde (même zone que la trappe d’évacuation actuelle) et une trappe en proximité du Booster (gru á positionner dans le parking du 588)  avant mars 2026 (dates pas fixées encore).
  • 
• Water leak near stairs ISOLDE related to works 197 ( Please note that this is not a water leak. The water observed is residual from the core drilling process)