Difference between revisions of "Injector Solenoids Upgrade"

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-== Injector Solenoids - Review ==
-;Introduction
-A variety of solenoid magnets have been in use at the CEBAF injector for over 20 years.  A total of 11 individual solenoids are installed, spanning 7 different types (FH,FB,FG,FQ,FA,FD,FL).   In order to preserve the beam polarization four of the type two internal counter-wound coils (FQ,FA,FD,FL) while others have a single internal coil (FH,FB,FG).   A summary of the 11 coils is listed below and can found on the injector songsheet [[media:190605_injectorsongsheet.pdf]].
-MFH2I01 - beam line solenoid, single wound
-MFB1I02 - beam line solenoid, single wound
-MFG1I04A - beam line solenoid, single wound
-MFG1I04B - beam line solenoid, single wound
-MFQ0I01 - beam line solenoid, counter wound
-MFA0I03 - beam line solenoid, counter wound
-MFD0I04 - two chopper solenoids in series, each counter wound
-MFA0I05 - beam line solenoid, counter wound
-MFA0I06 - beam line solenoid, counter wound
-MFL0I07 - beam line solenoid, counter wound
-While the magnets work reliably, there is an initiative to replace these solenoids with new magnets so the following is achieved:
-a) fewest types possible, to improve standardization and spares inventory
-b) greater radial field uniformity, to minimize variation of beam optics with beam position
-c) minimum field roll-off in the beam direction
-d) design accommodating operation at higher beam energy, i.e. function at higher power supply current
-e) larger inner diameter to accommodate 2-3/4" flanges
-f) bakable to >200C for extended periods for vacuum condition
-g) capability to be interchangeably wired for single wound or counter wound configuration
-With these considerations in mind Jay Benesh and Danny Machie have developed a solenoid magnet, in three variations, that will improve functionality.   The purpose of this review the proposed specifications and drawings that would be provided for a vendor RFQ and provide feedback or questions that would help us better clarify or improve the request.
-;Materials to be supplied for RFQ
-* Specification to vendor - [[media:magnet_spec.pdf]] or [[media:magnet_spec.odt]]
-* Coil drawing - [[media:coil8may19.pdf]]
-* Low Momentum Solenoid (200 keV beam line) - [[media:lowmomentumbeamlinesketch5.pdf]]
-* Low Momentum Solenoid (200 keV chopper) - [[media:lowmomentumchoppersketch2.pdf]]
-* Low Momentum Solenoid (200 keV beam line) - [[media:highmomentumbeamlinesketch4.pdf]]
-;Vendor List
-: Everson-Tesla Inc., Doug Hartman (dhartman@eversontesla.com)
-;Supplemental Material
-* Optics assessment of keV solenoids of different ID [[media:design_comp.pdf]]

Difference between revisions of "Injector Solenoids Upgrade"

Latest revision as of 13:02, 27 August 2020

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