<div><div dir="auto">Could we please get a written statement as to where the ratio 75% Inbend / 25% Outbend currently is?</div></div><div dir="auto"><br></div><div dir="auto">I heard word during the RC meeting yesterday but I think others did not receive this information</div><div dir="auto"><br></div><div><div dir="auto">Thanks</div><div dir="auto"><br></div><div dir="auto">Best regards</div><div dir="auto">FX</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Apr 9, 2019 at 6:35 PM Anselm Vossen <<a href="mailto:avossen@jlab.org">avossen@jlab.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p style="margin-top:0;margin-bottom:0">I second Marco's points about lambda's and di-hadrons.</p>
<p style="margin-top:0;margin-bottom:0"><br>
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<p style="margin-top:0;margin-bottom:0">I am also interested in polarized lambda studies (pending analysis proposal) which also relies on substantial outbending set. </p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0">Best,</p>
<p style="margin-top:0;margin-bottom:0"><br>
</p>
<p style="margin-top:0;margin-bottom:0">Anselm</p>
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<div id="m_2777571069961881670divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Clas12_first_exp <<a href="mailto:clas12_first_exp-bounces@jlab.org" target="_blank">clas12_first_exp-bounces@jlab.org</a>> on behalf of Marco Mirazita <<a href="mailto:Marco.Mirazita@lnf.infn.it" target="_blank">Marco.Mirazita@lnf.infn.it</a>><br>
<b>Sent:</b> Monday, April 8, 2019 12:41:46 PM<br>
<b>To:</b> Stepan Stepanyan<br>
<b>Cc:</b> clas12 first exp<br>
<b>Subject:</b> Re: [Clas12_first_exp] Fwd:Consideration for the torus polarity flip for the remaining of the run</font>
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<div class="m_2777571069961881670PlainText">Dear all,<br>
for the E12-06-112A/E12-09-008A experiment (Lambda in SIDIS) the <br>
critical point is the acceptance for low energy pi-, which is low with <br>
inbending field.<br>
I attached a plot of the MM(e Lambda X) simulations for inbending (red) <br>
and outbending (black). The difference will be less striking at high Q2 <br>
but it is still there.<br>
For E12-06-112B/E12-09-008B (dihadron production in SIDIS) we will have <br>
two pions with opposite charge in the final state, therefore having both <br>
inbending and outbending data will help in understanding the <br>
systematics.<br>
I understood that the agreement was to have 75% of the data with <br>
inbending and 25% with outbending, is it still so?<br>
Best regards,<br>
Marco<br>
<br>
<br>
<br>
<br>
Il 2019-04-07 22:03 Stepan Stepanyan ha scritto:<br>
> Dear all,<br>
> <br>
> For J/psi and also for the high mass (Q’2>5 GeV) TCS, the acceptance<br>
> for the 3-particle final states (-++) in FD for outbending case is ~x2<br>
> smaller compared to the inbending setting (see below). So, I propose<br>
> to continue with intending for remaining 6 days (18 shifts).<br>
> <br>
> Will be good to see similar motivations for inbending vs. outbending<br>
> configurations for other approved RG-A experiments.<br>
> <br>
> We need to see also accumulated charge for these two settings to date<br>
> for RG-A production runs (>10 GeV).<br>
> <br>
> Also, assuming we will need to do low luminosity, random trigger, and<br>
> empty target runs with the new setting, real production run time with<br>
> outbending polarity will be bit more than 5 days. Is there a real<br>
> benefit to have one more setting (energy/polarity) with small amount<br>
> of data?<br>
> <br>
> Regards, Stepan<br>
> <br>
>> Begin forwarded message:<br>
>> <br>
>>> Hi Stepan,<br>
>>> <br>
>>> Here is the photon energy dependence of the acceptance with 5<br>
>> million<br>
>>> generated events.<br>
>>> <br>
>>> -Joseph<br>
> <br>
> <br>
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