DRAGON MEETING : Nov. 8, 2006

Present: PM, CR, GR JP, MT, CV, DFO, DAH (Chair), JDA (Rec), LB

1. Minutes of Meeting of Oct. 31 approved.

2. Business arising
        a. JC has offered to supply the required alpha source needed for 
DRAGON acceptance tests (for a price) from PNL. Discussion
           ensued on required specifications. JDA will send these to Jac.

3. Hardware:
        a. PM has quote of $300 for NaI tube mounts from  ??. These do not 
have preamps built in. CV gave a quote of $1500 for
           complete units including preamp from ORTEC. No decision taken.
        b. Micron gave a quote of 300 pounds to fix broken wire on DSSSD 
detector. Unit will be sent to them.
        c. DFOT gave a description of tests of the alignment of the DRAGON 
target box and inlet and outlet ports. Upstream is high
           by 1.7 mm. Target box moves down ~ 0.25 mm under vacuum. 
Further checks are needed of the pumping tubes, but it seems
           that some form of more permanent connection needed for 
target box. (DFOT busy with TITAN also)
        d. CV did tests of mcp and some of the signals, e.g. timing, are 
very suspect. Could be a vacuum problem as the pressure is
           10e-6 and these detectors like ~10e-7. PM will do leak 
test of the detector box

4. Ne20(p,gamma) Run
        - MT gave a report on successful run and showed some preliminary 
data. Further analysis needed to properly account for
          charge state distribution information. Energy measurement
          seems to low by ~0.3%. Not clear why and needs further checking.
        - During the run JP ran a test of deliberately mistuning DRAGON to 
check for misalignments as mentioned above. Data shows
          asymmetric distribution indicating such a misalignment. 
Further studies needed.
        - CV asked about using the t-o-f method being set up for ISAC-2 to 
measure beam energy on ISAC-1 as a check of our numbers.
          CV will explore further.

5. LRP
        DRAGON group discussed suggestions for the LRPC meeting in 
December.Items mentioned are given below.
        Items mentioned included
                1. Second target production/target testing system for ISAC using BL4A.        
                2. 2nd accelerator to allow for separate accelerated beam to ISAC 2.
                3. Upgrade TRIUMF cyclotron to go to > 450 microamps.
                4. Alternate method of production system to produce beams difficult 
to produce on-line with ISAC

6. AOB
     A. Na22 study
        1. The required vacuum chamber needed at Seattle, to be supplied by 
TRIUMF group, is now 2nd on the list at the Design
           office.
        2. TIGRESS has offered a digital electronics system for use in 
Seattle for the Na22 experiment. LB will accept from TIGRESS
           and have delivered to TRIUMF for testing.
        3. Jac C has offered a large Ge detector for use with the Na22 experiment.
    B. Tour
        Andrei Andreyev is showing some SFU nuclear students around TRIUMF 
on Nov. 18.CR volunteered to say some words about DRAGON
        to the group.

Meeting ended 11:40