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ISOLDE RILIS laser laboratory consolidation
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Europe/Zurich
73/1-031 - 73-1-031 (CERN)
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13:30
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14:15
Introduction to the project and management structure
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13:35
The RILIS consolidation project 20mSpeaker: Katerina Chrysalidis (CERN)
RILIS ionizes element-selective radioisotopes produced at ISOLDE
- Uses many different wave-length tunable lasers in a multi-step element-dependent ionization scheme that requires usually between 2 and 4 individual lasers
- Laser tables today are very crowded, requires meticulous planning for setup of beam times
- Over the years RILIS changed a lot (started in the 1990s at the ISOLDE-SC), first installed at ISOLDE-PSB in 1994 in a reused wooden cabin near the entrance of the HRS separator magnet. In 2002 a new structure was installed which is partially still used today. In 2007 the ISCOOL high-voltage cage was installed next to the RILIS cabin, a natural constraint to further expansion.
- Until 2007 RILIS reached operational hours up to 1500h per year, spawning a 1.5MHCHF investment in exploiting RILIS more efficiently, triggering a thorough replacement of lasers, tables, etc.
- In 2010 the current layout of the lab was installed, included another small expansion maximizing the available space.
- After these upgrades, between 2012 and today, the operational hours of RILIS plateau around 2500h per year, providing more than 50% of the ISOLDE beams on both separator magnets
- Main motivations: lack of space, capability limits reached, lack of sufficient temperature stabilization, unstable floor, risk of radiation exposure (especially after the beam dump upgrade that allow higher proton beam current) -
13:55
Managment structure and current status 20mSpeakers: Katerina Chrysalidis (CERN), Lukas Nies (CERN)
WP1: project management (Kati)
- WP2: Coordination of dismantling, installation and services (Laura)
- WP3: ISCOOL Cage Replacement (Lukas)
- WP4: Lasers (KatI)
- Project safety (to be confirmed)
- Challenges and risks: strong interdependence between the different work packages; accessibility and handling in tight spaces, ISOLDE LS3 short duration with a hard deadline in Early 2028 -> Delays will have major impact on the 2028 operation capabilitites
- Budget granted ~ 1MCHF
- Next steps: finalize budget estimation, and circulate Project Management Plan as soon as possible, freeze design to get market survey, planning and coordination
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14:15
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15:50
Contributions from stakeholders
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14:15
Integration: current status 20mSpeaker: Vincent BarozierProximity of GLM right underneath the laser lab -> possible additional radiation risk to operators in RILIS- Also potential blocking of both GLM area would create handling constraints of equipment- Handling on the roof and blockage of the crane: carefully to be reviewed in terms of where the crane can pass and what equipment needs to be craned in place and how (needs individual review of each piece)- Move transformer of ISCOOL cage to the other side to have easier crane access- Move Cage access rack closer to cage (on top of cabin) and move chillers downstairs instead
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14:35
Slab reinforcement and metallic structure design 10mSpeaker: Tiago Nico (CERN)
Framework external contractor tasked with the activity, first drawings for proofing produced
- First floor floor composite slab with concrete thickness of 20cm
- Ceiling will be: metal profile sheets that allow significant loads but can be disassembled in the future
- Total cost estimated around ~300 kHCF, construction about 4 months, start construction works in July 2026
- Turbo pump evacuation of GPS separator route through the area as they are fed into primary pumps located in the HRS separator zone -> should be reworked to remove radiation load in the area -
14:45
Break 15m
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15:00
ISCOOL Faraday Cage relocation: concept and status 20mSpeaker: Lukas Nies (CERN)
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15:20
Cooling and ventilation 10mSpeaker: Nina Marianna Szczepanik-Scislo (CERN)
future installation requirements: double cooling load (20kW) with slight overpressure compared to the outside hall
- Two different implementations, mainly depend on price and maintenance downtime time per year
- Installation will take about 3.5 months from March to Mid June 2027
- Open questions to be addressed in separate discussions -
15:30
Laser system 10mSpeakers: Jordan Ray Reilly (The University of Manchester (GB)), Katerina Chrysalidis (CERN)
New Hardware is partially included in the approved CONS budget
- New staff and existing GRAF and GRAP will perform the works in this work package
- Removal and decommissioning of the laser system starting end of 2025, to be finished by mid-March 2026
- Storage locations: LARIS lab, YOL2 laser lab and sous-sol, MELISSA, 508 control room and user laser labs; laser tables to be followed up
- Use EAM for tracking of parts
- Procurement: new laser tables, new lasers, new machine protection system, laser table enclosures and laminar flow units (tasked to the new STAF)
- Installation and commissioning: goal is to have RILIS at same capabilities in 2028 as when stopped in 2025, then continue to expand capabilities throughout the next physics run -> Requires new and trained personal latest in 2027 to be able to operate in 2028 -
15:40
Other activities in the ISOLDE hall 10mSpeaker: Oscar Fjeld (CERN)Major activities from technical teams- New EPC platform, installation starting in February 2026- Cryomodule 1 removal and refurbishment, March and April 2026 removal, October 2027 reinstallation- REXTRAP and REXEBIS tests- Major experiment activities- ISOLTRAP platform replacement between April and June 2026- PUMA RC7 installation start in Q1 2026, PUMA tests later 2026- New COLLAPS and CRIS platforms, tentatively sometime between 2026 and 2027- Unconfirmed: redesign of GLM/GHM layout- Experiment testing with local ion sources or radioactive sources at various different experiments
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14:15
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15:50
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16:20
A.O.B. and discussion 30m
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13:30
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14:15
