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GF SPS-POP meeting
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CERN
CERN
Participants :J. Bieron, C. Carli, Y. Dutheil, S. Evrard, F. Galleazzi, E. Granados, W. Krasny, P. Kruyt, X. Lu, A. Martens, G. Mazzola, M. Grazia Pellegriti, A. Petrenko, Ronic
Mehnir laser characterisation (X. Lu)
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- Visiting PhD student from Tsinghua university working on optical cavity for several different projects
- Aim to store 400kW of power with the Mehnir laser
- Experimental protocol established to reach the target
- We expect to reach 170kW with the nominal amplifier power and the pulsed laser. So far we only used low power CW laser
Discussion and AOBs
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Edu will present some of those results at the PBC workshop and will present it
- Possible updates if new results arise by next month
- It would be interesting to discuss the specifics of the mirror coating
- Presentation from Laurent Pinard at a previous tech workshop here
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ThomX reached ~50k finesse with the same batch of mirrors
- Expected to be able to reach ~30k finesse
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Maria new collaborator from INFN Catania
- Working on nuclear astrophysics and neutron physics
- Expertise in measuring X-rays and low-energy gamma rays
- Needs discussing the specific requirement in view of joining the MoU, possibly in view of the extension of the baseline system towards single photon resolving
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Frederic
- Can work on the note after the mid-February
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Announce that Kinsco is replaced by Tamara as SCE primary contact for PBC
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Giuseppe about ion
- Working on the summary of protons and PSI studies for gamma factory
- Remain to check the activity during the ion run
- No expected
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RadMon (R2E) monitors
- Installed in TI18, but offline
- Will only be retrieved next YETS with the main aim to refine the simulation due to uncertainty on the source term
- Records as a function of time
- Need to review the alcove radiation levels
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Eduardo on pillar design
- Following the vibration measurement in the SPS ring, seeing the spectrum does not match the frequencies of the pillar
- Production expected to start soon by the STI workshop
- Going forward with a prototype and will use an STI laser to measure the coupled vibration
- Aiming for a test during the summer and an installation during the YETS
- Needs a lot of preparation
- Following the vibration measurement in the SPS ring, seeing the spectrum does not match the frequencies of the pillar
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Xenon cooling
- Motivation
- Alice is considering it for their extended run period
- Xe has several abundant isotopes which could be used to measure the different energy levels
- Peter ran initial simulation for Xenon for cooling time
- First number at 10s for 50% longitudinal cooling
- Expected lifetime of 45±15s for Li-like Xe in the SPS
- Question is whether we could also observe transverse cooling with the dispersion scheme
- Motivation
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Witek
- Question of introducing a magnetic field at the FP cavity
- Z field is seen as both E and B field in the ion frame
- Zeeman splitting and shifting is observed
- Several interesting prospects being studied
- Plasma exit window student started working with Dima
- Witek will meet gym in February
- Question of introducing a magnetic field at the FP cavity
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Subcritical reactor study
- Paper is being finalized
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Contact with ISOLDE meeting
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Contacts at the BERN workshop
- Dark matter
- Polarized muon source
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2 UK institutes accelerator seminars will be dedicated to Gamma Factory
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Recent paper on muon source published recently
- Triggered 2 talks for a future workshop at Stony Brook and BNL
- Follow-up investigations for polarized electrons with Arman Apyan
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