DRAGON Group minutes   26 Feb 2008

Present: PM, GR, CV, CR, CD, DH, LB, UH (rec)

1) Workshop jobs/upgrade
  * workshop almost finished everything
  * missing:
    - the flange between the IC and the gate valve cracked, PM found new parts, but they need to be altered
    - DSSSD box is finished, but the holes in the hinges are still missing
    - the o-ring part on the back of the DSSSD box was not polished, the box needs to be taken back to the workshop
    - G10 parts still missing
    - still need Turbopump
    - wheels on IC should be anodised (instead of the duct tape which is currently used), PM will get that done
    - o-rings are needed for the DSSSD box, possibly non-standard
  * beamlines
    - final slit box is aligned
    - we should get the electrician in as soon as beamlines is finalised

2) 22Na
  * CR found a drawing of the target ladder, but it is suspected that it is not the currently used one, Seattle will check the ladder they are using
  * implantation at 20keV was tested and was clearly worse than 30keV
    - the 30keV should be redone to check for reproducibility and reasons for the disagreement

3) Mesh attenuator
  * CR checked with Goodfellow
    - CuNi electroplated would cost ~400$
    - just Ni or Cu, very pure
    - buy two different wires for tests
  * the heating for 1nA beam is 23-25°C above room temperature per cable
  * wire thickness of about 15 microns
  * layer meshes starting with thicker wires going to thinner ones

4) 19Ne
  * not much hope for a good astrophysical motivation
  * cf Elog entry
  * leave it for now

5) Collaboration with CIAE on 33S
  * CIAE will buy strip detectors
  * they will send two or three people over for the run
  * they will do a parallel analysis
  * Anuj remains first author

6) AOB
  * we should buy a new DSSSD (in addition to the CIAE one)
    - Shark will get a new one (~100nm deadlayer) in summer, we might test that one
  * BGO start-up: cf elog
  * LE, CV and UH rearranged the tail end electronics, the RAL-crate with the amps is now in the rack
  * LB will be gone for 3 weeks
  * next weeks agenda: we should discuss the detectors/electronics needed for the upcoming runs