Magnetic field study

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Welcome to the home of ECCE Diffractive and Tagging Physics Working Sub Group

Scope

Information from Paul Brinza

• Athena is 3 meters ID and 3 Tesla and has the highest stored energy.
• Ecce is 1.5 Tesla and is also 3 Meters ID.
• Core is 3 Tesla but only 1 Meter ID.

The stored energy scales like B^2*Vol.

Additional information from Paul and Pawel:

• Radial material in the current 3 T CORE solenoid design.
• Inner vacuum vessel ~ 4 cm Al, density 2.5
• Inner radiation shield few mm ~ 2 mm Cu, density 9
• Coil 6 cm - a 5:1 mix of Cu and NbTi (i.e., with Nb =Ti, a 10:1:1 mix of Cu, Nb, and Ti)
• Coil support cylinder ~ 7 cm Al, density 2.5
• Outer radiation shield ~ 2 mm Cu, density 9
• Outer vacuum vessel Al ~ 10 cm Al, density 2.5

The 5 cm of Cu in the coil is not negligible, but also not a dominant contribution.

Question: an EIC KLM would work just as well with Cu as with Al? Belle's configuration and KLM performance will give a good indication

Software and Resources

ATHENA DD4HEP and Juggler Resources

• Tutorial: https://eic.phy.anl.gov/tutorials/eic_tutorial/
• gitlab: https://eicweb.phy.anl.gov/EIC

Full Simulation (Fun4all) Resources

• ECCE@EIC Software Documentation
• Day-1 checklist
• K. Kauder's talk at the ECCE software workshop
• ECCE Physics Work Group Indico Agenda
• 2nd Software and Simulation Workshop
  • An Analysis Module Example for Diffractive and Tagging Processes for IP6 Recording
  • An Analysis Module Example for Diffractive and Tagging Processes for IP8 Recording
  • ATHENA software tutorial how to get started Recording
• https://wiki.bnl.gov/eicug/index.php/File:EIC_ZDC_section.pdf Instruction for the Fun4all data format: June/07/2021
• Instruction for the Fun4all Job submission on JLab ifarm: June/07/2021
• Instruction for re-analyzing DST trees on the ifarm: August/15/2021 (Obsolete) Feb/01/2022 (use this)
• Instruction for accessing BNL generated simulation file via eicS3: March/12/2022
• Instruction for accessing JLab generated simulation file via xrootd: March/12/2022
• Athena Software Tutorial demo: Recording