Difference between revisions of "CaFe Preparation"

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== CaFe Preparation Overview ==
 
== CaFe Preparation Overview ==
−
The CaFe experiment is set to run in Hall C on June 2022. This wiki will be
+
The CaFe experiment is set to run in Hall C in August 2022. This wiki will be
 
used to document our weekly meetings, as well as post any other useful information
 
used to document our weekly meetings, as well as post any other useful information
 
such as proposals, previous publications, other useful links, etc. prior to the experiment running.
 
such as proposals, previous publications, other useful links, etc. prior to the experiment running.
  
−
== Meeting Information ==
 
−
<b> Weekly Meetings are Mondays at 12:00 pm (remote only) </b>
 
  
−
* Bluejeans remote connection information: https://bluejeans.com/439020559/7307
 
  
−
== November 2021 ==
+
{| class="wikitable"
 +
|+ style="caption-side:top; color:#e76700;"|''CaFe Task Force Contact''
 +
|-
 +
! style="color:black" | Name
 +
! style="color:black" | e-mail
 +
|-
 +
|Dien Nguyen
 +
|[mailto:dien@jlab.org dien@jlab.org]
 +
|-
 +
|Holly Szumila-Vance
 +
|[mailto:hszumila@jlab.org hszumila@jlab.org]
 +
|-
 +
|Larry Weinstein
 +
|[mailto:lweinste@odu.edu lweinste@odu.edu]
 +
|-
 +
|Carlos Yero
 +
|[mailto:cyero@jlab.org cyero@jlab.org]
 +
|}
 +
 
 +
== Pre-Run Task List ==
 +
* [https://docs.google.com/spreadsheets/d/1yJh92q0xC8syekyPSlz6KOBmQ7jC7KV5LQjPqp4s93g/edit#gid=0 CaFe Pre-Run Task List (google sheets)]
 +
 
 +
 
 +
'''*'''Targets currently on ladder:  [[Hall C Target Ladder]]
 +
 
 +
* Planned targets:
 +
** D, H, dummy, optics
 +
** Physics: 40Ca, 48Ca, 54Fe
 +
** Next preference: 9Be, 10B, 11B, 12C
 +
** If time: 48Ti
 +
* Planned Target Ladder for 2022-2023
 +
 
 +
[https://docs.google.com/spreadsheets/d/1OTbBPzuy5T_xq64VZzbHMnohauuIVUyp/edit#gid=2123900381 Planned Targets for Run Period: 2022-2023 (D. Meekins, google spreadsheet)]
 +
 
 +
[https://docs.google.com/spreadsheets/d/1GoHMHbCv3v6CbVybqTQws-4VhQeSifFP/edit?rtpof=true#gid=140150071 Planned Targets for Run Period: 2022-2023 (D. Meekins, google spreadsheet) version 2]
 +
 
 +
== Updated CaFe Target Thickness ==
 +
 
 +
[https://hallcweb.jlab.org/wiki/index.php/File:TGTs_cyero_updated_pdf.pdf CaFe Solid Targets Spreadsheet] - C. Yero updated Ca40,48, Fe54 Thickness on 09/24/22
 +
 
 +
* D. Meekins Log-Entries on Hall C Fall 2022 Target Thickness Measurements
 +
[https://logbooks.jlab.org/entry/4041680 Hall C Solid Target Measurements]
 +
[https://logbooks.jlab.org/entry/4013597 Ca48 Target Fabrication]
 +
 
 +
* Targets Assay (assessment of element composition in targets)
 +
[https://hallcweb.jlab.org/wiki/images/7/7d/Cafe_Ca40_assay_ORNL.pdf Ca40_Assay_ORNL]
 +
 
 +
[https://hallcweb.jlab.org/wiki/images/5/51/Cafe_Fe54_assay_ORNL.pdf Fe54_Assay_ORNL]
 +
 
 +
== Weekly Meeting Information ==
 +
<b> Weekly Meetings are Tuesdays at 09:30 am (remote only) </b> <br>
 +
<b>NOTE:</b> This was usual meeting times pre-CaFe experiment. Now that we have finished the experiment, a new
 +
meeting time will be determined, mainly for analysis meetings with Noah.
 +
 
 +
* Zoom remote connection information: https://jlab-org.zoomgov.com/j/1619420740?pwd=ZEZIVWNpYVpLdVFwWWRLcDBSY1pOQT09
 +
 
 +
Please add your presentation/updates or questions before each meeting under the appropriate (month, year) below
 +
 
 +
=== November 2021 ===
 
* [[Monday, November 08 , 2021]]
 
* [[Monday, November 08 , 2021]]
 
* [[Monday, November 15 , 2021]]
 
* [[Monday, November 15 , 2021]]
 +
* [[Monday, November 22, 2021]]
 +
* [[Monday, November 29, 2021]]
 +
 +
=== December 2021 ===
 +
* [[Monday, December 06, 2021]]
 +
 +
=== January 2022 ===
 +
* [[Monday, January 17, 2022]]
 +
* [[Monday, January 24, 2022]]
 +
 +
=== CaFe Kinematics Optimization ===
 +
 +
* [https://hallcweb.jlab.org/wiki/images/6/63/CAFE_optimization_open.pdf CaFe Optimization (Phase 0)]
 +
* [https://hallcweb.jlab.org/wiki/images/8/8d/CAFE_meeting_Jan242022.pdf CaFe Optimization (Phase 1)]
 +
* [https://hallcweb.jlab.org/wiki/index.php/File:CAFE_new_run_plan_REPORT_02182022_update.pdf CaFe optimization (update round 3)]
 +
* [https://hallcweb.jlab.org/wiki/index.php/File:CaFe_run_plan_Feb24_2022.pdf CaFe 3-Page Kinematics Optimization Summary]
 +
* [https://hallcweb.jlab.org/wiki/images/f/ff/CaFe_HeepElastic_Estimates_cyero.pdf CaFe Checkout/Calibrations and H(e,e'p) Elastics Rates Estimates]
 +
* [https://hallcweb.jlab.org/wiki/index.php/File:SHMS_PaddleOFF_for_CaFeStudy.pdf CaFe SHMS Scintillator Paddles Acceptance Study]
 +
* [https://hallcweb.jlab.org/wiki/index.php/File:SHMS_PaddleOFF_for_CaFeStudy_part2.pdf CaFe SHMS Scintillator Paddles Acceptance Study (part2)]
 +
* [https://hallcweb.jlab.org/wiki/index.php/File:SHMS_PaddleOFF_for_CaFeStudy_part3.pdf CaFe SHMS Scintillator Paddles Acceptance Study (part3, finally some good news)]
 +
* [https://hallcweb.jlab.org/wiki/index.php/File:CaFe_run_plan_02232022.pdf Cafe different run plans for different Iron target thickness, max beam current]
 +
* [https://hallcweb.jlab.org/wiki/index.php/File:CaFe_run_05182022.pdf Cafe run plan using the most updated target information 3% RL Fe and 80uA]
 +
 +
* [https://hallcweb.jlab.org/wiki/images/5/5c/Carbon_sieve_cafe.pdf Sieve rates for SHMS]
 +
** [https://hallcweb.jlab.org/wiki/images/9/9e/Output_plots_3286_sieve0.pdf Single arm C-foil at 30 uA for 11 minutes, P=8.7 GeV, theta=8.9deg]
 +
* [https://hallcweb.jlab.org/wiki/images/d/d7/Cafe_heep0.pdf Heep0 singles], [https://hallcweb.jlab.org/wiki/images/a/ad/Cafe_heep1.pdf Heep1 singles], [https://hallcweb.jlab.org/wiki/images/6/6f/Cafe_heep2.pdf Heep2 singles]
 +
** [https://hallcweb.jlab.org/wiki/images/e/e2/Output_heep_3373.pdf H singles at 55uA for 15 minutes, P=8.7GeV, theta=9.9deg]
 +
** [https://hallcweb.jlab.org/wiki/images/0/06/Run3373_heep.pdf Sim for run 3373 kinematics]
 +
 +
* [https://hallcweb.jlab.org/wiki/images/f/fc/Heep_elastics_reoptimization_Jul16.pdf CaFe Heep Elastics Re-Optimization for 10.3 and 10.6 GeV beam] (July 14, 2022)
 +
 +
=== CaFe Commission and production run plan for 10.6 GeV beam ===
 +
** [https://hallcweb.jlab.org/wiki/index.php/File:CAFE_rate_AND_run_plan_07012022.pdf CaFe run plan updated on 07/01/2022]
 +
 +
 +
=== CaFe Radiation Budget ===
 +
*[https://docs.google.com/spreadsheets/d/1szA72wrvzfSzeZrNIiTaVvW4Jyw425b5qUEGfnYrPuw/edit#gid=0 CaFe Radiation Budget ]
 +
 +
=== CaFe GEANT4 Simulation ===
 +
*[https://hallcweb.jlab.org/wiki/index.php/File:Geant4_CaFe_Ca48Sim_Slides_Mar23_2022.pdf Geant4 Simulation of Ca48 ]
 +
 +
=== CaFe SHMS NGC Gas Mixture ===
 +
SHMS will detect e- momenta up to ~10.3 GeV/c, therefore if we want to use SHMS NGC for pion rejection, it will require ~ 90:10 Ne:Ar gas mixture for said momentum.
 +
The NGC gas mixture used so far has been: 60:40 Ne:Ar:  https://logbooks.jlab.org/entry/3895288 ,  https://logbooks.jlab.org/entry/3938535
 +
 +
Documents related to the specific PMT type as well as photo-electron yields of the NGC can be found in the links below:
 +
*[https://hallcweb.jlab.org/DocDB/0007/000794/002/Cerenkovs_HallCRR_2016.pdf Hall C Cherenkovs ERR 2016]
 +
*[https://hallcweb.jlab.org/doc-private/ShowDocument?docid=1003 SHMS PMT ET9823 B Series]
 +
*[https://hallcweb.jlab.org/DocDB/0009/000933/001/shms-cerv6.pdf SHMS NGC Preliminary Report]
 +
 +
=== CaFe Trigger Set-Up ===
 +
 +
The CaFe experiment will detect electrons in SHMS and protons in HMS. The SHMS will be stationed at 8.55 GeV/c and range from ~6.8 deg to 8.3 deg, therefore the
 +
electron singles rates are expected to be significant. To minimize singles rates, it was decided to turn off half of the SHMS S1X and S2X hodoscope planes. To
 +
select a clean sample of electrons in SHMS, it was decided to 1) use SHMS EL-REAL trigger and 2) set the SHMS Noble Gas Cherenkov pion threshold to ~10.3 GeV/c
 +
(pion emits Cherenkov light at >= 10.3 GeV/c). During online data-taking we'll need to check how efficient is the Cherenkov at this configuration (~90% Neon, ~10% Argon).
 +
The latest trigger configuration from the previous run-group can be found in log-entry: https://logbooks.jlab.org/entry/3892668
 +
The 3rd bullet point from the log-entry is IMPORTANT, since it suggests the pEL_REAL x h3/4 cable was terminated and left dangling in case we need it again, which we will during CaFe.
 +
 +
'''Tentative CaFe Trigger Configuration:''' <br>
 +
SHMS:  EL-REAL (electron reals) <br>
 +
HMS:  3/4 Hodoscope Planes <br>
 +
COIN:  SHMS EL-REAL x HMS 3/4 <br>
 +
 +
For trigger definitions, See Trigger Documentation:  https://hallcweb.jlab.org/DocDB/0010/001028/005/trigger_v3.pdf
 +
 +
'''CaFe Trigger Checkout:''' <br>
 +
 +
Hardware changes that need to be made during CaFe trigger checkout:
 +
 +
*[https://hallcweb.jlab.org/wiki/index.php/File:CaFe_trig_changes_diagram_JPEG.001.jpeg CaFe Trigger Checkout Diagram (part 1) ]
 +
*[https://hallcweb.jlab.org/wiki/index.php/File:CaFe_trig_changes_diagram.002.jpeg CaFe Trigger Checkout Diagram (part 2) ]
 +
 +
=== CaFe presentations ===
 +
* [https://hallcweb.jlab.org/wiki/images/4/4a/ODU_Seminar.pdf ODU Nuclear Physics Seminar Jan 20, 2022]
 +
* [https://indico.jlab.org/event/517/contributions/9324/attachments/7553/10509/CAFE_hallC_Feb2022_final.pdf Hall C collaboration Meeting Feb 18-19, 2022]
 +
* [https://hallcweb.jlab.org/wiki/images/9/96/HallC_Summer2022.pdf Hall C Summer Collaboration Meeting Jun 17, 2022]
 +
 +
=== CaFe To-Do List ===
 +
* [https://docs.google.com/spreadsheets/d/1yJh92q0xC8syekyPSlz6KOBmQ7jC7KV5LQjPqp4s93g/edit#gid=0 CaFe Pre-Run Task List (google sheets)]
  
 
== Proposals ==
 
== Proposals ==
−
* [[https://hallcweb.jlab.org/wiki/images/1/10/CaFe_proposal_PAC44.pdf] CaFe ]
+
* [https://hallcweb.jlab.org/wiki/images/1/10/CaFe_proposal_PAC44.pdf CaFe Proposal (PAC 44) ]
 +
* [https://hallcweb.jlab.org/wiki/images/9/91/CaFe_proposal_May2017.pdf CaFe Proposal (PAC 45) ]

Latest revision as of 21:40, 10 October 2022

CaFe Preparation Overview

The CaFe experiment is set to run in Hall C in August 2022. This wiki will be used to document our weekly meetings, as well as post any other useful information such as proposals, previous publications, other useful links, etc. prior to the experiment running.


CaFe Task Force Contact
Name e-mail
Dien Nguyen dien@jlab.org
Holly Szumila-Vance hszumila@jlab.org
Larry Weinstein lweinste@odu.edu
Carlos Yero cyero@jlab.org

Pre-Run Task List


*Targets currently on ladder: Hall C Target Ladder

  • Planned targets:
    • D, H, dummy, optics
    • Physics: 40Ca, 48Ca, 54Fe
    • Next preference: 9Be, 10B, 11B, 12C
    • If time: 48Ti
  • Planned Target Ladder for 2022-2023

Planned Targets for Run Period: 2022-2023 (D. Meekins, google spreadsheet)

Planned Targets for Run Period: 2022-2023 (D. Meekins, google spreadsheet) version 2

Updated CaFe Target Thickness

CaFe Solid Targets Spreadsheet - C. Yero updated Ca40,48, Fe54 Thickness on 09/24/22

  • D. Meekins Log-Entries on Hall C Fall 2022 Target Thickness Measurements

Hall C Solid Target Measurements Ca48 Target Fabrication

  • Targets Assay (assessment of element composition in targets)

Ca40_Assay_ORNL

Fe54_Assay_ORNL

Weekly Meeting Information

Weekly Meetings are Tuesdays at 09:30 am (remote only)
NOTE: This was usual meeting times pre-CaFe experiment. Now that we have finished the experiment, a new meeting time will be determined, mainly for analysis meetings with Noah.

Please add your presentation/updates or questions before each meeting under the appropriate (month, year) below

November 2021

December 2021

January 2022

CaFe Kinematics Optimization

CaFe Commission and production run plan for 10.6 GeV beam


CaFe Radiation Budget

CaFe GEANT4 Simulation

CaFe SHMS NGC Gas Mixture

SHMS will detect e- momenta up to ~10.3 GeV/c, therefore if we want to use SHMS NGC for pion rejection, it will require ~ 90:10 Ne:Ar gas mixture for said momentum. The NGC gas mixture used so far has been: 60:40 Ne:Ar: https://logbooks.jlab.org/entry/3895288 , https://logbooks.jlab.org/entry/3938535

Documents related to the specific PMT type as well as photo-electron yields of the NGC can be found in the links below:

CaFe Trigger Set-Up

The CaFe experiment will detect electrons in SHMS and protons in HMS. The SHMS will be stationed at 8.55 GeV/c and range from ~6.8 deg to 8.3 deg, therefore the electron singles rates are expected to be significant. To minimize singles rates, it was decided to turn off half of the SHMS S1X and S2X hodoscope planes. To select a clean sample of electrons in SHMS, it was decided to 1) use SHMS EL-REAL trigger and 2) set the SHMS Noble Gas Cherenkov pion threshold to ~10.3 GeV/c (pion emits Cherenkov light at >= 10.3 GeV/c). During online data-taking we'll need to check how efficient is the Cherenkov at this configuration (~90% Neon, ~10% Argon). The latest trigger configuration from the previous run-group can be found in log-entry: https://logbooks.jlab.org/entry/3892668 The 3rd bullet point from the log-entry is IMPORTANT, since it suggests the pEL_REAL x h3/4 cable was terminated and left dangling in case we need it again, which we will during CaFe.

Tentative CaFe Trigger Configuration:
SHMS: EL-REAL (electron reals)
HMS: 3/4 Hodoscope Planes
COIN: SHMS EL-REAL x HMS 3/4

For trigger definitions, See Trigger Documentation: https://hallcweb.jlab.org/DocDB/0010/001028/005/trigger_v3.pdf

CaFe Trigger Checkout:

Hardware changes that need to be made during CaFe trigger checkout:

CaFe presentations

CaFe To-Do List

Proposals

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