ISOLDE Technical Coordination Meeting

Tuesday 14 May 2024, 14:00 → 15:20 Europe/Zurich

508/1-001 (CERN)

14:00 → 14:02 Minutes and general announcement

• Thanks a lof for the chairs of the last technical meetings for chairing and writing the minutes. Will not be present but will connect remotely next week for minutes taking.

14:05 → 14:10 Operation Report

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_wk19.docx

ISOLDE_wk19.pdf

14:10 → 14:20 REX&HIE ISOLDE

14:20 → 14:30 RILIS

Transfer AC RILIS

Speakers: Cyril Bernerd (CERN), Katerina Chrysalidis (CERN), Reinhard Heinke (CERN)

14:30 → 14:40 MEDICIS & Building 179

Speakers: Charlotte Duchemin (CERN SY/STI/RBS), Laura Lambert (CERN), Ralf Erik Rossel (CERN)

MEDICIS

LAST WEEK the double Ra-224/225 collection was retrieved and shipped to Dresden (700 MBq) and NPL (110 MBq), respectively. Irradiation of #833M started.

THIS WEEK  the irradiation of #833M continued and has been retrieved today to start with a Dy/Tb-155 collection for CHUV.

We created a swimming pool in the S3 Bunker when putting the water on. After some tests it seems it is a target failure and not a FE failure. S3 water removal needs to be organised (S2 as well).

 

A 1h30 irradiation slot for the irradiation of Ta samples for a release study involving the our Latvian students, the Tb-task-force and the RP-FIRIA project will happen on friday morning.

In two weeks, the Minister of Health from Germany will come to visit MEDICIS as part of the protocol office.

 

AOB: shared irradiation with GPS for MEDICIS

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

Speakers: Hanne Heylen (CERN), Mia Au, Sebastian Rothe (CERN)

Physics week 19

• On GPS, the stable lead beam was very useful for preparating of photoluminiscence measurements in diamond requested by the solid state group later this year.
•  On HRS, the Wisard experiment aims to investigate physics beyond the standard model by a high precision measurement of the weak interaction studied via the beta-delayed proton decay of 32Ar. A bit less than half of the statistics was obtained before the target change on Monday, the increased proton current was important to achieve the needed yields.

 

Targets

target #823

• yields decreased over time and instabilities were seen in the total and separated beam intensities
• heated to 300A to confirm drop in yields likely corresponding to sintering
• proton scan on user counts: moved the proton beam down, recovered the yield. could be that the target "sank" to the bottom.
  • repeated proton scan
• removed and replaced by target #854

target #854

• one day turnaround time charge preparation to loading to online and under vacuum - thanks to Valentina for fast charge preparation!
• heavy outgassing once online

• TODO: release curve on 32Ar yield confirmation (Sebastian and Isa)

target #855

• mass scan finished at offline, to be mounted on GPS 
• proton scan on Friday TBC
  
  • schedule says: "11:00 Continue setup + proton scan (no yield checks on tape station)"
  • can test indium isomeric ratios on tape station if needed for RILIS setup
    
    • intracavity tripled TiSa, doubled dye
    • can optimize on FC490 this week once separator is setup, before central beamline

14:50 → 14:55 Safety

• Building 170 and 197 False Floor Inspection:
  https://edms.cern.ch/document/3078380/1

Speakers: Alexandre Dorsival (CERN), Elodie Aubert (CERN), Nadine Conan (CERN), Simon Mataguez (CERN)

14:55 → 15:00 AOBs

• Validation of possibility to operate both Frontends in parallel for winter physics/MEDICIS irradiation (HRS Frontend - direct) and GPS operation. Possibility identified by Charlotte later during the year.
• Access in the HT room in the shadow of a target change for SY-ABT and contractor (preparation of the HT safety panel consolidation)
• Vibration measurements in flush mode in the EN-CV technical room (to schedule in the shadow of a target change)