sPHENIX EMCal discussion

[woody <woody AT bnl.gov>]

Great ! Thanks for the explanation.

On 1/18/2017 6:31 PM, Huang, Jin wrote:
> Hi, Craig
>
> Thank you for the immediate response.
>
> > the EMCAL position scan (item 3 on your list) HIGH priority (actually VERY 
> > HIGH priority)
> Sure. Updated.
>
> It take some time to do the scan, therefore, I thought get a resolution curve 
> of 2-D projective towers can be done first, which is first of its kind.
>
>
> > I think it's also particularly important to scan both regions of the detector 
> > with the two different light guides and study the difference between the two.
> The request was to perform scan column 2 to 7 and row from 2 to 7, which 
> covers both regions.
>
>
> > We won't have the Cherenkovs in the trigger so we'll collect both electron 
> > and hadron data at the same time, so the hadron data should be included in 
> > item 4.
> Correct. Item 5 adds more statistics to item 4 in three energy points to 
> bring additional statistics in hadron sample. We run out of statistics in the 
> last beam test.
>
>
> > when you say tilt angle, do you mean to tilt the detector in the vertical 
> > direction ?
> I meant horizontal direction rotation by 10 degree. Difference between items 
> 5 and 4 are statistics.
>
>
> Cheers,
>
> Jin
>
>
>
> ______________________________
>
> Jin HUANG, Ph. D.
>
> Associate Physicist
> Brookhaven National Laboratory
> Physics Department, Bldg 510 C
> Upton, NY 11973-5000
>
> Office: 631-344-5898
> Cell:   757-604-9946
> ______________________________
>
> From: woody [mailto:woody AT bnl.gov]
> Sent: Wednesday, January 18, 2017 6:17 PM
> To: Huang, Jin <jhuang AT bnl.gov>
> Cc: sphenix-hcal-l AT lists.bnl.gov; sphenix-emcal-l AT lists.bnl.gov
> Subject: Re: [Sphenix-hcal-l] Test beam data wish list
>
> Hi Jin,
>    I think your wishlist for the standalone EMCAL runs is very good. The only 
> thing I would change is that we should make the EMCAL position scan (item 3 
> on your list) HIGH priority (actually VERY HIGH priority) since this will 
> tell us how the position dependence affects our energy resolution. I think 
> it's also particularly important to scan both regions of the detector with 
> the two different light guides and study the difference between the two. We 
> will need this information in order to know how to proceed with building the 
> next full scale prototype and what type of light guides we will use on it, 
> which will affect the mechanical design and also presumably determine the 
> performance of the final calorimeter. I think this is one of the most 
> important things we need to measure in this test beam run.
>    My only other question is regarding item 5 which you list as a scan with negatively 
> charged hadrons. We won't have the Cherenkovs in the trigger so we'll collect both 
> electron and hadron data at the same time, so the hadron data should be included in 
> item 4. Also, when you say tilt angle, do you mean to tilt the detector in the vertical 
> direction ? Otherwise, this item looks nearly identical to the item 4 where the 
> detector is rotated in the horizontal plane.  However, for the new 2D projective 
> prototype, it's not possible to rotate the detector in the vertical direction since 
> it's fixed in its frame with no rotation motor. Did you perhaps mean this scan was for 
> the old 1D projective prototype ? If not, we should also add that to the list. The 1D 
> prototype now only rotates in the vertical direction (there is no "lazy 
> susan" in the horizontal direction), so we can tilt it 10 degrees in the vertical 
> plane, but unfortunately all of our data from the last run was with a 10 degree 
> horizontal rotation. Nevertheless, I think if we want to further study the position 
> dependence of the old prototype, this will be the only way we can do it.
>
> Cheers,
> Craig
>
> On 1/18/2017 4:51 PM, Huang, Jin wrote:
> Hi, Everyone
>   
> In the HCal meeting today, John Haggerty asked Abhisek and I to come up with a wish list for key measurements for the on-going beam test.
>   
> Please find a draft EMCal data wish list at this link: https://wiki.bnl.gov/sPHENIX/index.php/2017_calorimeter_beam_test#EMCal_Standalone_Data . Seven data set was rated high, mid and low. Welcomed to give suggestions or edit the list on wiki.
>   
> Cheers,
>   
> Jin
>   
> ______________________________
>   
> Jin HUANG, Ph. D.
>   
> Associate Physicist
> Brookhaven National Laboratory
> Physics Department, Bldg 510 C
> Upton, NY 11973-5000
>   
> Office: 631-344-5898
> Cell:   757-604-9946
> ______________________________
>   
> From: sphenix-hcal-l-bounces AT lists.bnl.gov [mailto:sphenix-hcal-l-bounces AT lists.bnl.gov] On Behalf Of John Lajoie
> Sent: Tuesday, January 17, 2017 5:54 PM
> To: Lynch, Don <dlynch AT bnl.gov>; sphenix-hcal-l AT lists.bnl.gov
> Subject: Re: [Sphenix-hcal-l] HCAL bi-weekly meeting
>   
> Hi Don,
>      Thanks for the update!  I certainly appreciate that you want to keep the 
> engineering meeting tight, but I'll look forward to poking through the slides.
> John
>   
> On 1/17/2017 4:51 PM, Lynch, Don wrote:
> Hi John,
>   
> We won't have any Engineering input for tomorrow's meeting, as we are meeting with Walt Sondheim on MAPS parameters at the same time. We do have a BNL internal Calorimeter engineering meeting on Friday to go over Anatoli's latest analyses, Rich's current light collection design status and general engineering issues for finalizing HCal mechanical design (steel, light collection, etc., inner and outer) and advancing the EMCal mechanical design.
>   
> We are not putting this on bluejeans, as we want to keep the engineering discussion tight, but we will post some slides on Indico.
>   
> - Don Lynch
>   
> From: <sphenix-hcal-l-bounces AT lists.bnl.gov> on behalf of John Lajoie <lajoie AT iastate.edu>
> Date: Tuesday, January 17, 2017 at 3:11 PM
> To: "sphenix-hcal-l AT lists.bnl.gov" <sphenix-hcal-l AT lists.bnl.gov>
> Subject: [Sphenix-hcal-l] HCAL bi-weekly meeting
>   
> Dear HCAL'ers:
>      It's been a while, but we will resume our bi-weekly HCAL meetings this 
> coming Wednesday, Jan 18th, at 2:30PM BNL time.   The agenda is evolving here 
> at:
> https://indico.bnl.gov/conferenceDisplay.py?confId=2762
> I'm hoping we can get an update on the test beam, and maybe some additional 
> contributions.
> Regards,
> John