ISOLDE 44Ti meeting notes
19 Jul 2018
==To be ordered==
*Entrance window foils, TBD
6um Ti from Goodfellow?
*Gas bottles at CERN - Helium and (likely) Argon.
ISOLDE might provide them, but they never did for N2 gas
Gas bottle will need a regulator (new or old one)
*Spanners to help repair water chiller leak.
We need the right imperial size (x2) for Swagelok.
Sizes? Email says 2x 9/16" but let's confirm
*High precision balance
No new updates. Do we really need it?
==To be repaired / replaced==
*Manual gate valve between SEC and Edinburgh chamber
Responsible: Peter, Daid, CERN Vacuum Team ...
The old one had a leak, likely from the O-ring
(Automated fast-acting gate valve could be required)
At some point, we may have to decide w/o input
Path of least resistance: fix existing one
(The old manual one should be around Peter's office...what's the beam pipe size?)
*Silena 7100 Quad Bias supply showed false readings during 59Cu exp.
Responsible: Daid, ...
Not yet repaired, Peter searches for manual
Alternative module was found and tagged for our use, needs testing
*ORTEC 474 TFA was returned to Edinburgh, owing to 10 V baseline shift
Responsible: Daid, ...
Useful for photodiode trigger. Take replacement back to CERN.
Tagged for repair.
Alternative module was found and tagged for our use, needs testing
*Teflon chamber feet stands
Responsible: Toby Fu
The original foot engraving diameter was too small, by mistake. The chamber could be shifted after alignment
But what are the design specifications?
EMAIL Mirco TO PICK THEM UP FOR US FROM ISOLDE
==Decisions==
*How shall we integrate the beam intensity delivered to target?
Gold foil w/ back-scattering to photodiode?
Needs foil, mounts for foil & photodiode. Other parts prepared.
Alpha scattering in SSDs is another option
*Photodiode degrader foil for isobaric check
Which Al foil(s) are prepared?
In Edinburgh or CERN?
What thickness is sufficient for 44Sc / 44Ti separation?
*Gas cell entrance window material / thickness
==Work==
*Decide beam energies
Responsible: Conor, Alex, Daid
1.2, 1.55, 1.88, 2.2 and 2.8 MeV/u were stated as available
*Model effect of beam spot size.
Responsible: Conor
~3 mm FWHM was achieved for 59Cu
*Gas cell
Responsible: Katie, Conor
Vacuum system is set up in Edinburgh, and He gas is available
He gas bottle needs a mounting support prior to use.
Everything is in Physics Stores
We can continue to investigate true leak rate, gas cell handling, assembly
Gas cell eventually needs to go to CERN.
Are we satisfied with the setup, or shall we get new parts?
(e.g. several new valves, ...)
*Chamber alignment
Responsible: Peter Black
Chamber is currently disconnected from the beam line.
Previously, we contacted the survey team to come assist.
*DAQ PC has any further issues to get on the network?
Responsible: Tom Davinson
(If PC is turned on, contact Ruchi as she would like some data.)
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