Difference between revisions of "Apr 17 2024"
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* The electrode front end pieces 16-30 deg and 16-60 deg, two pieces each manufactured from 316 VAR SS have been polished in the SRF tumbler, UHV cleaned in the Chem room, and vacuum degassed din the vacuum furnace room. They are ready for assembly. | * The electrode front end pieces 16-30 deg and 16-60 deg, two pieces each manufactured from 316 VAR SS have been polished in the SRF tumbler, UHV cleaned in the Chem room, and vacuum degassed din the vacuum furnace room. They are ready for assembly. | ||
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* Gun layout drawings comparing z position of R28-2 and R30-3[[File:Haysg SKETCH -JL0091130-0100-SECTION 01-PHOTO-GUN TO VBV2102.pdf|right|middle|thumb]] | * Gun layout drawings comparing z position of R28-2 and R30-3[[File:Haysg SKETCH -JL0091130-0100-SECTION 01-PHOTO-GUN TO VBV2102.pdf|right|middle|thumb]] | ||
* The electrode is planned to be removed from the high voltage chamber, and disassembled for checking the tension on the sapphire roller springs, suspected to be too weak thus leading to irreproducibility in the laser retreat-reflection:[https://logbooks.jlab.org/entry/4278817 R30-gun laser retro-reflection checks in LERF clean room performed April 12 2024] | * The electrode is planned to be removed from the high voltage chamber, and disassembled for checking the tension on the sapphire roller springs, suspected to be too weak thus leading to irreproducibility in the laser retreat-reflection:[https://logbooks.jlab.org/entry/4278817 R30-gun laser retro-reflection checks in LERF clean room performed April 12 2024] | ||
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| + | ==Pictures== | ||
| + | *[[File:R30-4 gun elecctrode front end pieces after barrel polishing top view.jpg|left|middle|thumb]] | ||
| + | *[[File:R30-4 gun elecctrode front end pieces after barrel polishing iso view.jpg|left|text-bottom|thumb]] | ||
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==Schedule Discussion== | ==Schedule Discussion== | ||
* [https://jeffersonlab.sharepoint.com/:f:/s/CIS/Ejp9S0WdeXtPgFm_bwwkuEAB0gEzYKg7Ci0UfKK8qQnPfQ?e=1tfGAH R30-4 200 kV SharePoint site] | * [https://jeffersonlab.sharepoint.com/:f:/s/CIS/Ejp9S0WdeXtPgFm_bwwkuEAB0gEzYKg7Ci0UfKK8qQnPfQ?e=1tfGAH R30-4 200 kV SharePoint site] | ||
| + | * ATLis/ePAS one encompassing ATLis or break down in major jobs? | ||
=<br />= | =<br />= | ||
[https://wiki.jlab.org/ciswiki/index.php/200_kV_Polarized_Gun Return to 200 kV Gun page] | [https://wiki.jlab.org/ciswiki/index.php/200_kV_Polarized_Gun Return to 200 kV Gun page] | ||
Revision as of 12:54, 15 April 2024
Updates
- The electrode front end pieces 16-30 deg and 16-60 deg, two pieces each manufactured from 316 VAR SS have been polished in the SRF tumbler, UHV cleaned in the Chem room, and vacuum degassed din the vacuum furnace room. They are ready for assembly.
- Gun layout drawings comparing z position of R28-2 and R30-3File:Haysg SKETCH -JL0091130-0100-SECTION 01-PHOTO-GUN TO VBV2102.pdf
- The electrode is planned to be removed from the high voltage chamber, and disassembled for checking the tension on the sapphire roller springs, suspected to be too weak thus leading to irreproducibility in the laser retreat-reflection:R30-gun laser retro-reflection checks in LERF clean room performed April 12 2024
Pictures
Schedule Discussion
- R30-4 200 kV SharePoint site
- ATLis/ePAS one encompassing ATLis or break down in major jobs?