ISOLDE 44Ti meeting notes
09 Oct 2018 

==To be ordered==

*Windows
  Done

*Gas bottles at CERN - Helium and (likely) Argon.  
  Gas bottle will need a regulator (new or old one)
  Emailed Karl to inquire.  N2 necessary?

*Spanners to help repair water chiller leak.
  Done

*PPE (Safety)
  Boots and hardhats for new members

*New valves for gas flow system

*Gas cell stands for each gas cell
  Order was submitted.

*Photodiodes
  We have 3 at CERN, but no more in Edinburgh.  Order more!

*Au foils

==To be repaired / replaced==

*Manual gate valve between SEC and Edinburgh chamber
  Responsible: (Your name here)
  Lesker quotes £123 for a repair kit.  Do we give up?

  New one has arrived - plan to leak check it
  Converter flange to check w/ He sniffer ordered, not arrived.

*Silena 7100 Quad Bias supply showed false readings during 59Cu exp.
  Responsible: Katie, 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: Katie, Daid, ...

  Useful for photodiode trigger.  Take replacement back to CERN.

  Tagged for repair.  
  Alternative module was found and tagged for our use, needs testing
  
*Take additional Pre-amp to CERN for Photodiode?
  There are several in the Miniball cupboard...

*Teflon chamber feet stands
  Done

*Chamber stand wheel struts
  Responsible: Peter, Daid, Conor, Ruchi

  Original ones are damaged at the ends, and also too long

  Maria suggested 120 cm.  We measured ~121 cm opening towards garage

  To make less top-heavy, we can add a lower shelf and stack weight on it
  
  Need a measurement of bolt spacing, Ruchi has a friend who can help us.

==Decisions==

*How shall we integrate the beam intensity delivered to target?
  Total integrated current, with efficiency-calibrated Ge detector
    Talk to Liam?
  Gold foil w/ back-scattering to photodiode?  
    Needs foil, mounts for foil & photodiode.  Other parts prepared.
    Daid should contact Paul Morrall
  Alpha scattering in SSDs is most preferred.

*Photodiode degrader foil for isobaric check
  10, 15, 20 um Al are prepared at CERN, 2 blank frames in Edinburgh
  What thickness is sufficient for 44Sc / 44Ti separation?
    (...or other suspected contamination...)
  Need to know the beam energies!  This is quick work.

*Target ladder setup
  How many targets can fit & what should they be?
    3 mm collimator
    Photodiodes (takes two slots)
    Viewing screen (?)
    1 mm collimator (?)
    Blank target frame (?)

==Work==

*Gas cell
  Responsible: Katie, Conor

  Vacuum system is set up in Edinburgh, and He gas is available

  Gas cell eventually needs to go to CERN.  
  
  New needle valves and some piping for the gas flow control.

  Many windows, washers, etc are now ready to go!

  **Window material / thickness
    9, 12.5 um Al arrived.
    3 um Ti arrived, some holes but maybe serviceable
    6 um Ti had order mixup
    We can get Havar in 2 weeks privately


*Chamber alignment
  Responsible: Peter Black

  Chamber is currently disconnected from the beam line.
  Previously, we contacted the survey team to come assist.
  Alignment parts are all at CERN.

*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.)