Minutes of the DRAGON meeting, May 28, 2002.

Those present: Sabine E., Joel R., Lothar B., Don H. Alison L.,
Chris W., Mike L., Mohan C., Alan C.

Notes taken by L.B.

Minutes: Approved with one change regarding the branching ratio
of a possible 360 keV/u state.

Business arising:

A radioactive beam run took place May 21/22 at 355 keV/u. The 
gamma-detection threshold was lowered to 1 MeV. However, 21Na 
currents were low. No valid coincidence events were observed.

Proton recoil/time of flight: a test was made to detect zero degree
protons through the separator to measure their time
of flight, i.e., the energy of the beam. No protons were detected.

Stable beam runs: Due to the ISAC target situation, there will be definitely
no radioactive beam runs on the accelerator till at least September.
Tuda already has scheduled stable time, which leaves
middle of June to middle of July and begin of August for stable
beam runs at DRAGON. Possible experiments: (i) measure leaky
beam at at least 360 and 490 keV/u to decide validity of these runs
due to Q10 settings, (ii) repeat proton t-o-f, (iii) run low energy
24Mg(p,g) resonance, and (iv) test microchannel plate.

Radioactive beam runs: There is a chance that in fall two SiC targets
will be employed at ISAC: one with a surface, the other with an ECR source.
We have to decide, if the 21Na(p,g) measurement is complete by now:
(i) we may want to remeasure the 360 and 490 keV/u regions; 
(ii) estimates of the stellar reaction rates ought to be made to
see what uncertainties arise from our upper limits, DC, tail of
big resonances etc. and if more measurements are thus desirable.


Papers and forthcoming publications were then discussed.


The meeting was adjourned after the record breaking time of 45 
minutes.