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<div class="moz-cite-prefix">Dear Andrea,<br>
this is a good starting point for the BDX presentation at the ws.<br>
General comments:<br>
- some of the graphs and picture are out of date and should be
updated: I'd suggest to keep the detector design consistent with
what described in the proposal (we have an arxiv public paper on
it too!). <br>
- Some messages need to be conveyed more clearly (eg the bdx
reach, the difference with previous beam-dump experiments, the
advantages for the whole LDMA-like activity in assessing the
background of a high intense electron beam experiment) in the
spirit of considering BDX as one of the forst experiment deserving
to be funded<br>
- You may also want to mention that the R&D of this experiment
started 4 years ago (we presented a LOI at PAC42 starting to work
on it well before!) and now we are ready to assemble the real
experiment <br>
- I'd show how the signal will look like in the detector
(including efficiency, crystal multiplicity, ... ) to give the
feeling that the detector option is adequate to detect the Chi<br>
- a backup slide with costs/workplan will be useful (we'll decide
later if to be included in the presentation)<br>
- do we want to address (another backup slides ) the possible BDX
competitors (experiments such as LSND E137) and report the recent
results of miniboone showing that we can do much better (in termn
of EOT, background, ...)?<br>
- at some point next week I'd send the slides to Bob , just to
have him informed about what is going on.<br>
Here shttps://www.ge.infn.it/~batta/Celentano-3.pdf some detailed
comments on the slides.<br>
Cheers<br>
Marco<br>
<br>
Andrea Celentano wrote:<br>
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Dear Colleagues,<br>
you find attached a first draft of the slides I'm going to show at
the DOE workshop next week. The talk is 30' + 5'.<br>
<br>
Slides are not in the final form - but already in a quite definite
shape, so that I can circulate them to you to receive feedback and
comments.<br>
<br>
Note that slides n. 5 is missing, as well as slide n. 29.
Conclusions still needs to be written properly.<br>
<br>
Other than your general comments, I'd like to hear the following:<br>
<br>
* Eder, Gordan: my idea about slide n.5 was to present BDX as a
"second generation" dump experiment, dedicated to LDM, after the
experiences from E137 and others. Also, I'd like to compare with
proton beam-dump experiments (LSND, Miniboone), underlying the
complementary (protons: maybe higher production, but higher
beam-related backgrounds. Electrons: beam-related backgrounds are
lower). Do you think this is reasonable?<br>
<br>
* Eder, Gordan: can you please have a look at the reach plot
(slide n.24)? These were taken from proposal, but I do not know if
any MAJOR change in limits from other experiments should be added<br>
<br>
* Marco, Elton: slides n. 28 and 29 shows the current experiment
status and future plans. In slide n. 29 I can show that a
realistic cost estimate for facilities (and partially for the
detector) has been carried out. What's your opinion about? Is it
worth to discuss or it is better to put in the backup?<br>
<br>
* All: do you think it is better to circulate the slides to people
at JLab? At the moment, in particular for the mu pipe test, I am
just saying that the plans have been "discussed" with the
management. If we want to stress this more (like saying that the
plans have been pre-approved, or something like this) then we need
to.<br>
<br>
I expect to receive your feedback within Friday morning (Europe
time), so that I can work on this on Friday, circulate again on
Friday evening (Europe time), and if necessary circulate to people
at JLab.<br>
<br>
Bests,<br>
<br>
Andrea<br>
<br>
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