[PRad] repetition for collaboration meeting

Tue Nov 1 16:00:20 EDT 2016

Hi Maxime and Xinzhan,
I also had two suggestions / questions about slides 16 on position resolution

1-) On the right plot, you have the fit giving a sigma = 72 microns resolution so why do you have below the statement that resolution < 74 microns?

2-) Maybe I am  missing something but since you are extracting the resolution from the overlapping region and I guess you assumed that the two chamber have the same resolution, I would expect on the plot on the right being the distribution of the residual (x2_project - x1) and with a width sigma_residual  and them extract the resolution  from this value by dividing by sqrt (2)

sigma_resolution = sigma_residual / sqrt 2, I don't understand how you directly plot the distribution hat gives you the resolution

Best

Kondo

________________________________
From: PRad [prad-bounces at jlab.org] on behalf of Eugene Pasyuk [pasyuk at jlab.org]
Sent: Tuesday, November 01, 2016 3:49 PM
To: Bai, Xinzhan (xb4zp)
Cc: prad
Subject: Re: [PRad] repetition for collaboration meeting

OK. If you could add a picture showing these spots it would be helpful.

-Eugene

Sent from Galaxy S7

On Tue, Nov 1, 2016 at 3:42 PM -0400, "Xinzhan Bai" <xb4zp at virginia.edu<redir.aspx?REF=ynBjjVd530ir15SnzEui6696LJu2lPKmkO9RbR6VbA7LiCJkkALUCAFtYWlsdG86eGI0enBAdmlyZ2luaWEuZWR1>> wrote:

Hi Eugene,

0 is in the hole centre on GEM detectors. As you know we have a hole on each chamber to allow beam pipe to pass through. This plot uses GEM local coordinates. (origin is in the hole centre, x axis is in the horizontal direction, y axis is in the vertical direction).

The result is from the data taken during HyCal calibration run, during which we had 4 dedicated runs to test GEM efficiency, and we scanned 4 spots on GEM. These 4 spots are in the same height.

The X axis is the coordinates (horizontal direction) of the spot, (in GEM frame), this plot shows efficiency in different GEM areas.

As during calibration, detectors are moving relative to beam, so I chose GEM local frame for this plot.

please let me know if you have comments on improving this plot.

Best,

Xinzhan

On Tue, Nov 1, 2016 at 3:16 PM, Eugene Pasyuk <pasyuk at jlab.org<redir.aspx?REF=0C0jPFAxVKD58BSEo3nen0_vJ_qjYmyGXMseMJ_OefrLiCJkkALUCAFtYWlsdG86cGFzeXVrQGpsYWIub3Jn>> wrote:
Maxime,

I am confused with slide 17 with GEM efficiency. Position with respect to what? What is 0 on X-axis?

-Eugene

----- Original Message -----
> From: "Maxime Levillain" <mlevilla at jlab.org<redir.aspx?REF=UVaq3hx4B8VAXA3_eMWXNChJAyr31bTcfB59OO7uKyvLiCJkkALUCAFtYWlsdG86bWxldmlsbGFAamxhYi5vcmc.>>
> To: "prad" <prad at jlab.org<redir.aspx?REF=D6SxytoJhcVLZdVrJH5QrMJzo0VDV31wPAorne-16SjLiCJkkALUCAFtYWlsdG86cHJhZEBqbGFiLm9yZw..>>
> Sent: Tuesday, November 1, 2016 1:39:13 PM
> Subject: Re: [PRad] repetition for collaboration meeting

> Just a reminder of the dry run for the clas12 collaboration meeting at 5 PM in
> F227 for the people at jlab, and https://bluejeans.com/6017317348<redir.aspx?REF=PLuIyePfOkAE54D9SCSU22Pp-fxq5D-CFw1EazCtq5vLiCJkkALUCAFodHRwczovL2JsdWVqZWFucy5jb20vNjAxNzMxNzM0OA..> for the other
> ones available.
> The talk has been updated on the wiki
> (https://wiki.jlab.org/pcrewiki/images/9/99/Levillain_161102.pdf<redir.aspx?REF=C37Avl9mNyAtUzQyh8oA7LqbJmOytxhsdOjbJY56cZnLiCJkkALUCAFodHRwczovL3dpa2kuamxhYi5vcmcvcGNyZXdpa2kvaW1hZ2VzLzkvOTkvTGV2aWxsYWluXzE2MTEwMi5wZGY.>).
>
> Regards,
> Maxime
>
> ----- Original Message -----
> From: "Maxime Levillain" <mlevilla at jlab.org<redir.aspx?REF=UVaq3hx4B8VAXA3_eMWXNChJAyr31bTcfB59OO7uKyvLiCJkkALUCAFtYWlsdG86bWxldmlsbGFAamxhYi5vcmc.>>
> To: prad at jlab.org<redir.aspx?REF=D6SxytoJhcVLZdVrJH5QrMJzo0VDV31wPAorne-16SjLiCJkkALUCAFtYWlsdG86cHJhZEBqbGFiLm9yZw..>
> Sent: Monday, October 31, 2016 1:08:11 PM
> Subject: Re: [PRad] repetition for collaboration meeting
>
> Hi all,
>
> Since most people are only available after 5pm, I've booked the room F227 for
> the dry-run.
> I will connect to the bluejeans meeting: https://bluejeans.com/6017317348<redir.aspx?REF=PLuIyePfOkAE54D9SCSU22Pp-fxq5D-CFw1EazCtq5vLiCJkkALUCAFodHRwczovL2JsdWVqZWFucy5jb20vNjAxNzMxNzM0OA..>
>
> Regards,
> Maxime
>
> ----- Original Message -----
> From: gasparan at jlab.org<redir.aspx?REF=XRoyFaf_Gd5UXP7ZGBJhLwo59JZLHTGk5VjFgyky8aPLiCJkkALUCAFtYWlsdG86Z2FzcGFyYW5AamxhYi5vcmc.>
> To: "Eugene Pasyuk" <pasyuk at jlab.org<redir.aspx?REF=0C0jPFAxVKD58BSEo3nen0_vJ_qjYmyGXMseMJ_OefrLiCJkkALUCAFtYWlsdG86cGFzeXVrQGpsYWIub3Jn>>
> Cc: "Maxime Levillain" <mlevilla at jlab.org<redir.aspx?REF=UVaq3hx4B8VAXA3_eMWXNChJAyr31bTcfB59OO7uKyvLiCJkkALUCAFtYWlsdG86bWxldmlsbGFAamxhYi5vcmc.>>, "prad" <prad at jlab.org<redir.aspx?REF=D6SxytoJhcVLZdVrJH5QrMJzo0VDV31wPAorne-16SjLiCJkkALUCAFtYWlsdG86cHJhZEBqbGFiLm9yZw..>>
> Sent: Monday, October 31, 2016 12:30:59 PM
> Subject: Re: [PRad] repetition for collaboration meeting
>
> Hi All,
>
> For the Maxime's practice run: tomorrow, on Tuesday I am free from 12:30
> to 3:00 pm and after
> 5 pm.
>
> Since Eugene is available only after 5 pm CAN WE MAKE it 5 pm?
>
> Thanks,
> Ashot
>
>
>> Tomorrow I am available only after 5 pm.
>>
>> -Eugene
>>
>> ----- Original Message -----
>>> From: "Maxime Levillain" <mlevilla at jlab.org<redir.aspx?REF=UVaq3hx4B8VAXA3_eMWXNChJAyr31bTcfB59OO7uKyvLiCJkkALUCAFtYWlsdG86bWxldmlsbGFAamxhYi5vcmc.>>
>>> To: "prad" <prad at jlab.org<redir.aspx?REF=D6SxytoJhcVLZdVrJH5QrMJzo0VDV31wPAorne-16SjLiCJkkALUCAFtYWlsdG86cHJhZEBqbGFiLm9yZw..>>
>>> Sent: Monday, October 31, 2016 9:03:14 AM
>>> Subject: [PRad] repetition for collaboration meeting
>>
>>> Dear colleagues,
>>>
>>> You can the presentation that I plan to on the next CLAS12 collaboration
>>> meeting
>>> here: https://wiki.jlab.org/pcrewiki/images/9/99/Levillain_161102.pdf<redir.aspx?REF=C37Avl9mNyAtUzQyh8oA7LqbJmOytxhsdOjbJY56cZnLiCJkkALUCAFodHRwczovL3dpa2kuamxhYi5vcmcvcGNyZXdpa2kvaW1hZ2VzLzkvOTkvTGV2aWxsYWluXzE2MTEwMi5wZGY.>.
>>> Corrections and comments are welcome!
>>> I plan to do a repetition tomorrow (tuesday). Let me know if you are
>>> available
>>> and at which hour, so that I can book a room.
>>>
>>> Regards,
>>> Maxime
>>> _______________________________________________
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