sPHENIX HCal discussion

[Stefan Bathe <stefan.bathe AT baruch.cuny.edu>]

Dear All,

Here the minutes from the commissioning part of the meeting (also on indico):

Best regards,

Stefan

Minutes Calorimeter Commissioning meeting, 2023-12-18

———————————————————————————————————————

Test results of RMS of the HCal boards from pedestal runs—JaeBeom Park (see slides)

- study from mid November

- RMS from non-pedestal subtracted data larger than from pedestal-subtracted samples

  - ==> pedestal correlation between samples

- voltages on refers to both LV and bias

- results will be used for zero suppression

- similar study for EMCal planned for new year once SiPM cooling back on

- then results will also feed into simulation

- Eric requests current monitoring to be on, i.e. db logging (current drop observed since September) (ACTION ITEM)

Problematic EMCal bias channels—Eric

———————————————————————————

- plan to replace some problematic EMCal bias channels

- should be done before EMCal pedestal study

HCal Cosmics data taking (discussion during calibration part of meeting)

————————————————————————————————————————————————

- Martin turned on HCal racks

- Hanpu taking data today

- software workaround for ADC initialization not implemented yet (hot towers)

- in the meantime will try to reconfigure ADCs until no hot towers

Gain balancing demonstration—Hanpu

——————————————————————————

- should come after updated calibration from more cosmics data to be taken

- 

---------------------------------------------------------------------------------
Stefan Bathe

Professor of Physics
Baruch College, CUNY
and RIKEN Visiting Scientist

Baruch:                                     BNL:
17 Lexington Ave                      Bldg. 510
office 940                                  office 2-229
phone 646-660-6272                phone 631-344-8490
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On Dec 15, 2023, at 16:12, Stefan Bathe <stefan.bathe AT baruch.cuny.edu> wrote:

Hello,

We’ll also resume our commissioning meeting, right after the calibrations meeting:

Select an authentication source indico.bnl.gov

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We should discuss any calorimeter related work in 1008 in the near future, specifically related to more cosmics data taking and gain balancing.  Please send me an email if you’d like to present something.

Best regards,

Stefan

- 

---------------------------------------------------------------------------------
Stefan Bathe

Professor of Physics
Baruch College, CUNY
and RIKEN Visiting Scientist

Baruch:                                     BNL:
17 Lexington Ave                      Bldg. 510
office 940                                  office 2-229
phone 646-660-6272                phone 631-344-8490
----------------------------------------------------------------------------------

On Dec 15, 2023, at 12:27, Hodges, Anthony <ahodges4 AT illinois.edu> wrote:

* This email originates from a sender outside of CUNY. Verify the sender before replying or clicking on links and attachments. *

Good afternoon folks, 

We'll resume our regularly-scheduled Calorimeter Calibrations meetings this upcoming Monday, December 18th, at the usual time and place, 11:00AM EST, at the following zoom coordinates:

https://bnl.zoomgov.com/j/1617635022?pwd=WmlVME9tcnlTYnlkUC9nU3crNTdRdz09

And the corresponding agenda can be found here:

https://indico.bnl.gov/event/21603/

We're currently expecting an update from Emma McLaughlin on HCal sampling fraction studies. Let Blair or myself know if you'd like to be added to the agenda!

Best, 

-Anthony and Blair

Anthony Hodges, PhD (he/him/his)

High Energy Experimental Nuclear Physics

Postdoctoral Researcher, NSF MPS-Ascend Fellow

University of Illinois Urbana-Champaign

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