sPHENIX is a new detector at RHIC.

["Frantz, Justin" <frantz AT ohio.edu>]

Hi Hanpu,

Sounds good.  Here are a few suggestions:   (in order -- and in red are the parts with the suggested changes)

 ...while the inner HCal is in inside the magnet immediately outside the Electromagnetic Calorimeter....

...calls for precise measurements OF jets...

The MPV's are then subjected to corrections for temperature and the pre-determined performance of the individual tiles in each tower.

We will use these data to calibrate the response and to ensure uniform performance of the towers.  (better not to  anticipate "problems"  publically, even if just potential ones)

-Justin

 ---------------------------------------------- 

Justin Frantz, Ph. D.  he 

RHIC UEC/Diversity Working Group 

Brookhaven National Lab, sPHENIX Experiment 

Associate Professor 

Ohio University Dept. Of Physics and Astronomy    

frantz AT ohio.edu    

646-228-2539   

PERSONAL ZOOM MEETING:  369-910-7530   Password:  1   

https://us02web.zoom.us/j/3699107530?pwd=TkZLeU1MY2d5eUpqeTJ5WUJTRHlVUT09

 

---

From: sPHENIX-l <sphenix-l-bounces AT lists.bnl.gov> on behalf of Hanpu Jiang via sPHENIX-l <sphenix-l AT lists.bnl.gov>
Sent: Wednesday, June 29, 2022 12:11 PM
To: sphenix-l AT lists.bnl.gov <sphenix-l AT lists.bnl.gov>
Subject: [External] [Sphenix-l] Abstract submission for DNP 2022

 

Use caution with links and attachments.

Dear collaborators,

We want to give a talk at the DNP 2022 about the sPHENIX HCal calibration progress and results.

The draft of the abstract is here:

Hadronic Calorimeter Cosmic Muon Calibrations 

The sPHENIX experiment  has two layers of the hadronic calorimetry (HCal). The outer HCal is the outermost layer outside the solenoid coil, while the inner HCal is inside the magnet and follows the Electromagnetic Calorimeter. The sPHENIX program calls for precise measurements on jets and to analyze the microscopic properties of the strongly interacting quark-gluon plasma, and therefore requires  a well-calibrated energy scale for the calorimeters. This talk will focus on the progress of the calibration for both the inner and outer HCal using cosmic muons. We record the energy deposited by muons passing through the sectors, and select events where the muons pass through all tiles in a tower. Our primary diagnostic is the Most Probable Value (MPV) of the ADC distributions for such events. The MPV's are then subjected to corrections for the temperatures and the Performance Ratio (PR) of the tiles in each tower. The corrected MPV's determine the gain of each tower. We will use these data to calibrate the performance and to detect potential problems of the towers.

Any comments or suggestions are appreciated!

Sincerely,

Hanpu Jiang