sPHENIX discussion of the superconducting solenoid

[Kin Yip <kinyip AT bnl.gov>]

Thanks Jim for taking care of last week's biweekly meeting (Nov. 9).  Below is the summary that Jim has written (I've only changed a couple words like LeRHIC to LEReC :-)

( It's also recorded as usual in my calendar :
https://collab.external.bnl.gov/sites/sPHENIX-Magnet/Lists/Calendar/DispForm.aspx?ID=97 )

Magnet Meeting Minutes 11/9/2016

1. Carl presented the status of the PS/Quench Detection/Dump Resistor preparations for the High Field Test. Because of higher priority work, a number of efforts have been stopped, most of which will hopefully restart by the end of November. A mid-March test date is still possible even with this delay.

• Power Supply and Energy Dump Resistor

  • Controls are finished.

  • DC cables to test load are connected.

  • AC input cables not connected yet.

  • Energy Dump Resistor is being wired.

    • It is not being used in the PS test.

  • Technicians are not available now.

  • Technicians should be back about the end of November.

  • Testing should be complete by the end of December.

• Quench Protection and DAQ

  • DAQ parts in house.

  • Software is mainly complete for strain gage system.

    • Reading voltage from the DAQ system.

    • Need to add individual strain gage coefficients.

    • Need to create the Pet Page.

  • Software for VME based DAQ is not started.

  • Winston is busy with RHIC, plans on returning to sPHENX about the end of November.

  • Software for the Quench Detector has not been started.

  • Zeynep is working on LEReC and will be able to work on it about the end of November.

  • The front end electronics design was started, but is not being worked on presently.

    • Carl will be able to return to sPHENIX about the end of November.

2. We need electricians to hook up the power supply for testing. John Haggerty suggested that Carl consider using the PHENIX electrician to assist with this. Carl will contact Paul Giannotti.

3. The Valve Box Extension components are completed at the Heavy Shop awaiting pick-up by the Magnet Division. The Magnet Division will work on inspection and testing of components and then start assembly once they are brought to B902.

4. All work on the steel has been stopped because we don’t have the magnetic drill (see 5).

5. One of the MAB Magnetic Drilling Machines requires service. Dave Phillips is coordinating the shipping of the drill to a vendor service center in CT. The other is being used by PHENIX out at B1008. It should be available by 11/15 so that we can restart the drilling and tapping of steel in B912.

6. The STRECK’S Steel PO is Sourced. Paperwork from Health Physics for the release and shipment still needs to be done. Jon Hock is coordinating this.

7. John Cozzolino reported on the status of the ANSYS Magnet analysis. This is the model that incorporates Jon Hock’s steel design for the High Field test. He is still having problems getting the model to converge and solve. He will continue to work on it and report back to the group at the next Magnet Meeting. After this work is done we need to move on to the analysis of the steel that will be used in the final detector configuration at B1008.

8. The question of how the magnet forces (internal coil and steel flux return plates) change when the coil quenches was asked again. What is the transient response? What is the status of this effort? Could Brett Parker and Kin Yip look into this and prepare a report and presentation addressing these questions? We will need this before we turn the magnet on for the High Field test.