Minutes of the meeting held on June 26, 2001
During ALEPH week
- Vincent reported that his student Christophe Delaere has
finished his diploma thesis, and has shown some of the transparencies
of Christophe's defence. The thesis as well as these transparencies
are available on the ALPHA++ Web site. Christophe has completed his
work for the search for an invisible Higgs, using only ALPHA++.
Indeed, he gets a competitive limit compared to the standard ALEPH
analysis.
The good news is that he will stay in ALEPH as a doctoral student.
- Man power: there was a discussion on the future organization
of the man power, since Guenther cannot follow up the project at
full time from September on. It was agreed that the best candidate
is indeed Christophe, who now knows the project very well, and who
has excellent skills. It should not take to much time to take care
of the CVS repository, the Web page, as well as introducing new
users. By the time of the writing of these news Christophe has
kindly accepted to take the job.
Vincent and his group will stay at CERN during summer and carry
on further development of the package. A btag is definitely needed.
It is hoped that they also produce a technical note/manual.
Vincent might get further students. They will also test various
tools to look at the data, such as LIZARD, ROOT, etc.
Also Kay Huettmann has expressed interest in working on the
vertexing part, and he will try to collaborate closely during
summer with Vincent and Co.
Guenther hopes to get some diploma students at ETH who could
also contribute to ALPHA++.
So the continuation of the project seems to be ensured.
- Database: It was mentioned that ORACLE has now a C++
interface, which is evaluated at CERN. Therefore
it can not be excluded that Objectivity is replaced. So it is
agreed to put no further efforts in producing more Objy databases with
ALEPH data, but stay with what we have and observe the developments
in IT. For the moment we live well with reading EPIO.
- Archiving: In a recent Thursday meeting the tool QUAERO
from D0 was presented, which allows access to D0 data via a
Web page. There is agreement that ALEPH should look into it.
It might first be interesting as an internal tool as well as
for teaching purposes. Later we might make it public. The
policy should be decided at the Leukerbad meeting.
In any case, we should use the proposed help by Bruce Knuteson
from D0 to evaluate the feasibility. Marcello Maggi has kindly
accepted to collaborate with Bruce. In particular we are
interested in the evaluation of a possible "SUPER-MINI" data
format to be written maybe to ASCII files as in D0.
Marcello points out that the data reduction might still not
be enough to put all data and MCs on a single PC disk. Therefore
one should also think in a reduction of MC sets, and save only
relevant ones. Then he raised the issue that one should
carefully study platform issues. For that purpose he thinks a
dedicated PC would be useful.
Guenther Dissertori
Wed 13 01:50:38 MET DST Dec 2000
GD