Minutes of DRAGON meeting, February 11th, 2004. 

Present: JD, DO, JP, CJ, ML, JS, AO, GR (recorder), CR, LB 

Correction to previous minutes 

ML noted that the conditioning voltage of ED2 was 142 *kilo*V, not V. 

Installation of new pumps 

DO says that the new pumps are installed and running with He. 

Something is still leaking but it is not serious. 

JP will change the GEANT code using CVS (a user program for system VII 

to update the code, as AO explained) 

Beam schedule 

JD: Presently it looks as we have a beam from February 26th to March 4th. 

Only a couple of days but perhaps enough to make detector tests. 

AO would like testing the Catania detector with heavy ions, as it 
works with alphas. 
It may or may not need cooling and runs essentially the same as the DSSD. 

JD: We start with the DSSD. Switching to the Cat. det. is then a simple 

change 


ML needs an energy signal to test the mass resolution of the MCP. 


After a short discussion about when to mount the Cat. det. JD suggests 

to run with mcp for 2 days and then switch to Cat detector. Start with 
PMT at end of DRAGON with mcp, then put in DSSSD for energy of recoils. 
We can then put in the CAt. det. 

Action item: Next meeting we must discuss a more precise beam schedule! 

Electronics 

What do we need for the next run (not for the ion chamber)? This needs 
some attention. 

Also, we need to get back the items for the ion chamber from TUDA 
(at some point). 


After working with the MIDAS software JP has now an increase of spectra. 

AO, JD discussing about how to combine the TDC and the DSSD so that the 

software can remain unchanged. 


Perhaps AO needs a new BIAS supply for the Catania detector. 


After a discussion of LB and JD about energy determination by means of 

elastic scattering, and usefulness of two Si detectors in place, JD closed 
the meeting. 


DG and ML gave her rehershal talks about the BGO and the MCP for the Lake 
Louise Conference.