Difference between revisions of "Injector Solenoids Upgrade"
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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]]. | 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 | + | *MFH2I01 - beam line solenoid, single wound |
| − | MFB1I02 - beam line solenoid, single wound | + | *MFB1I02 - beam line solenoid, single wound |
| − | MFG1I04A - beam line solenoid, single wound | + | *MFG1I04A - beam line solenoid, single wound |
| − | MFG1I04B - beam line solenoid, single wound | + | *MFG1I04B - beam line solenoid, single wound |
| − | MFQ0I01 - beam line solenoid, counter wound | + | *MFQ0I01 - beam line solenoid, counter wound |
| − | MFA0I03 - beam line solenoid, counter wound | + | *MFA0I03 - beam line solenoid, counter wound |
| − | MFD0I04 - two chopper solenoids in series, each counter wound | + | *MFD0I04 - two chopper solenoids in series, each counter wound |
| − | MFA0I05 - beam line solenoid, counter wound | + | *MFA0I05 - beam line solenoid, counter wound |
| − | MFA0I06 - beam line solenoid, counter wound | + | *MFA0I06 - beam line solenoid, counter wound |
| − | MFL0I07 - 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: | While the magnets work reliably, there is an initiative to replace these solenoids with new magnets so the following is achieved: | ||
| − | + | # fewest types possible, to improve standardization and spares inventory | |
| − | + | # greater radial field uniformity, to minimize variation of beam optics with beam position | |
| − | + | # minimum field roll-off in the beam direction | |
| − | + | # design accommodating operation at higher beam energy, i.e. function at higher power supply current | |
| − | + | # larger inner diameter to accommodate 2-3/4" flanges | |
| − | + | # bakable to >200C for extended periods for vacuum condition | |
| − | + | # 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. | 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. | ||
Revision as of 13:39, 5 June 2019
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:
- fewest types possible, to improve standardization and spares inventory
- greater radial field uniformity, to minimize variation of beam optics with beam position
- minimum field roll-off in the beam direction
- design accommodating operation at higher beam energy, i.e. function at higher power supply current
- larger inner diameter to accommodate 2-3/4" flanges
- bakable to >200C for extended periods for vacuum condition
- 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