Difference between revisions of "Jan 17 2024"
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(Created page with "<span class="mw-headline" id="Updates_from_last_meeting_action_items">Updates from last meeting action items</span><span class="mw-editsection"><span class="mw-editsection-bra...") |
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| + | Max: Some misleading links to a previous meeting have accidentally been hardcoded on this page. Can't click the edit buttons next to the section headings.<br/><br/> | ||
<span class="mw-headline" id="Updates_from_last_meeting_action_items">Updates from last meeting action items</span><span class="mw-editsection"><span class="mw-editsection-bracket">[</span>[https://wiki.jlab.org/ciswiki/index.php?title=Jan_05_2024&action=tinymceedit§ion=1 edit]<span class="mw-editsection-divider"><span></span>|<span></span></span>[https://wiki.jlab.org/ciswiki/index.php?title=Jan_05_2024&action=edit§ion=1 edit source]<span class="mw-editsection-bracket">]</span></span> | <span class="mw-headline" id="Updates_from_last_meeting_action_items">Updates from last meeting action items</span><span class="mw-editsection"><span class="mw-editsection-bracket">[</span>[https://wiki.jlab.org/ciswiki/index.php?title=Jan_05_2024&action=tinymceedit§ion=1 edit]<span class="mw-editsection-divider"><span></span>|<span></span></span>[https://wiki.jlab.org/ciswiki/index.php?title=Jan_05_2024&action=edit§ion=1 edit source]<span class="mw-editsection-bracket">]</span></span> | ||
* Gabriel: | * Gabriel: | ||
* Alicia | * Alicia | ||
* Max: | * Max: | ||
| + | ** R28 measurements at UITF | ||
| + | *** Moved laser spot on grid | ||
| + | *** [[media:20240116_uitf_r28_solenoid.pdf|Orbits extrapolated from solenoid center]] giving 15--20 cm focal length | ||
| + | *** [[media:20240116_uitf_r28_bpms.pdf|Orbits extrapolated from BPMs]] giving 25 cm focal length | ||
| + | *** Measurements don't agree 100%, but this gun focuses a little more strongly than what we've seen from the R28 | ||
| + | *** Could be the puck, may have more recess than the previous one | ||
| + | *** Does not seem to be a big deal operationally, likely would have remained unnoticed | ||
| + | ** Tolerance on hole diameter | ||
| + | *** [[media:20240116_hole_comparison.pdf|Comparison 6.2 mm and 6.4 mm]] | ||
| + | *** Seems to be a 10% effect | ||
| + | ** Junction angle, does it matter optically? | ||
| + | *** [[media:20240116_junction_gpt_comparison.pdf|Comparison 30 and 60 degrees]] | ||
| + | *** Also seems to be a 10% effect | ||
| + | ** Effect of edge radius at junction | ||
| + | *** [[media:20240116_01_r30_cathode15.pdf|Zoomed out]] | ||
| + | *** [[media:20240116_02_junctiontest1.pdf|0.5 mm radius]] | ||
| + | *** [[media:20240116_03_junctiontest2.pdf|0.25 mm radius]] | ||
| + | *** [[media:20240116_04_junctiontest3.pdf|0.25 mm radius, protruding lip]] | ||
| + | *** This may not end up being a big deal. The protruding case has the worst field enhancement, perhaps 20%, need finer mesh to quantify. Small radius w/o protrusion is best, barely worse than a smooth joint. | ||
| + | ** CST vs Poisson | ||
| + | *** [[media:20240116_ez_comparison_cst_poisson.pdf|Comparing Ez for a test case]] | ||
| + | *** Not exactly equal, not 100% sure yet if caused by different geometry or cylindrical symmetry | ||
* Carlos: Created table of parameters and SharePoint site | * Carlos: Created table of parameters and SharePoint site | ||
<span class="mw-headline" id="Items_for_discussion">Items for discussion</span><span class="mw-editsection"><span class="mw-editsection-bracket">[</span>[https://wiki.jlab.org/ciswiki/index.php?title=Jan_05_2024&action=tinymceedit§ion=2 edit]<span class="mw-editsection-divider"><span></span>|<span></span></span>[https://wiki.jlab.org/ciswiki/index.php?title=Jan_05_2024&action=edit§ion=2 edit source]<span class="mw-editsection-bracket">]</span></span> | <span class="mw-headline" id="Items_for_discussion">Items for discussion</span><span class="mw-editsection"><span class="mw-editsection-bracket">[</span>[https://wiki.jlab.org/ciswiki/index.php?title=Jan_05_2024&action=tinymceedit§ion=2 edit]<span class="mw-editsection-divider"><span></span>|<span></span></span>[https://wiki.jlab.org/ciswiki/index.php?title=Jan_05_2024&action=edit§ion=2 edit source]<span class="mw-editsection-bracket">]</span></span> | ||
Latest revision as of 20:34, 16 January 2024
Max: Some misleading links to a previous meeting have accidentally been hardcoded on this page. Can't click the edit buttons next to the section headings.
Updates from last meeting action items[edit|edit source]
- Gabriel:
- Alicia
- Max:
- R28 measurements at UITF
- Moved laser spot on grid
- Orbits extrapolated from solenoid center giving 15--20 cm focal length
- Orbits extrapolated from BPMs giving 25 cm focal length
- Measurements don't agree 100%, but this gun focuses a little more strongly than what we've seen from the R28
- Could be the puck, may have more recess than the previous one
- Does not seem to be a big deal operationally, likely would have remained unnoticed
- Tolerance on hole diameter
- Comparison 6.2 mm and 6.4 mm
- Seems to be a 10% effect
- Junction angle, does it matter optically?
- Comparison 30 and 60 degrees
- Also seems to be a 10% effect
- Effect of edge radius at junction
- Zoomed out
- 0.5 mm radius
- 0.25 mm radius
- 0.25 mm radius, protruding lip
- This may not end up being a big deal. The protruding case has the worst field enhancement, perhaps 20%, need finer mesh to quantify. Small radius w/o protrusion is best, barely worse than a smooth joint.
- CST vs Poisson
- Comparing Ez for a test case
- Not exactly equal, not 100% sure yet if caused by different geometry or cylindrical symmetry
- R28 measurements at UITF
- Carlos: Created table of parameters and SharePoint site
Items for discussion[edit|edit source]
Action items for next meeting[edit|edit source]