Difference between revisions of "June 24, 2021 KLONG Design Meeting"
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== Meeting Time and Place == | == Meeting Time and Place == | ||
| − | Thursday June | + | Thursday June 24, 2021, 1pm |
Bluejeans https://bluejeans.com/465620466 | Bluejeans https://bluejeans.com/465620466 | ||
| − | * Present - | + | * Present - Hovanes Egiyan, Moskov Amaryan, Stephanie Worthington, Keith Harding, Igor Strakovsky, Tim Whitlatch, Mark Stevens |
== Agenda == | == Agenda == | ||
| Line 12: | Line 12: | ||
** 5 mm gap between Be and tungsten | ** 5 mm gap between Be and tungsten | ||
** 5 cm tube downstream since that is the clearance in sweep magnet | ** 5 cm tube downstream since that is the clearance in sweep magnet | ||
| + | ** Be target holder | ||
| + | ** lead geometry | ||
| + | ** Borated Poly geometry | ||
| + | * Heat absorbed by Be and Tungsten | ||
* Requirements: | * Requirements: | ||
| − | ** | + | ** Cool tungsten plug to below temperature that affects lead |
== Minutes and Action Items == | == Minutes and Action Items == | ||
| − | * | + | * We went through the marked up sketch of overall dimensions and everyone was ok with it. |
| − | * | + | * Discussed beam size and beam pipe size. 5cm beam pipe ok to just past the sweep magnet . Need to check if the PS is 6cm. Will use 6 cm after the sweep. |
| − | + | * Moskov said the target is 6 cm so we do not need to be bigger than that. | |
| − | + | * Keith presented the 3D model | |
| − | * | + | ** 6" (15 cm) square steel tube ok upstream of tungsten. This will make it easier to stack lead |
| − | * | + | ** 5mm gap between beryllium and tungsten ok |
| − | * | + | ** Square tungsten to match steel tube ok (6"), Igor will do new calculation when design finalized |
| − | + | ** Square steel tube downstream of tungsten plug ok. Tentatively 5 cm, may be bigger if cooling tubes are needed for tungsten | |
| − | * | + | ** some type of cradle support for the beryllium ok. |
| − | * | + | ** Vacuum tube (5 cm) to start right after target assy - is kapton window ok or is aluminum needed? |
| − | * | + | ** Verify weight of lead, appears to be 18 tons ([https://halldweb.jlab.org/wiki/images/6/6d/TargetNEW.xlsx Igor's initial estimation was 12.5 t ]) |
| − | * | + | ** Location of Be within several mm ok |
| − | * | + | ** Assembly will be on rollers and move out of beamline manually |
| − | * | + | ** Hovanes asked if it would be easier to fabricate beryllium if square. This needs to be looked at. |
| − | * | + | * Energy absorption in beryllium and tungsten not yet calculated |
| − | * | + | * Igor requests 16.3 g/cc for tungsten (the source is Rolf, one can check it with Bogdan) |
| − | * Hovanes asked | + | |
| − | * | + | |
| − | * | + | |
| − | + | ||
| − | + | == Action Items == | |
| − | + | * Continue developing 3D model - Keith | |
| − | + | * Find out fabrication technique for Beryllium and if square will be easier (Tim) | |
| − | + | * Perform energy absorption calculations - Igor | |
| − | + | * Verify Pair spec magnet beampipe size (Tim) | |
| + | * Get quotes on lead bricks (Stephanie) | ||
| + | * Verify weight of lead (Keith) | ||
| + | * Start looking at cooling methods for tungsten (Stephanie, Keith, Tim) | ||
Latest revision as of 20:13, 24 June 2021
Meeting Time and Place
Thursday June 24, 2021, 1pm Bluejeans https://bluejeans.com/465620466
- Present - Hovanes Egiyan, Moskov Amaryan, Stephanie Worthington, Keith Harding, Igor Strakovsky, Tim Whitlatch, Mark Stevens
Agenda
- Minutes from last meeting https://halldweb.jlab.org/wiki/index.php/June_10,_2021_KLONG_Design_Meeting
- Media:KLONG_Be_target_overall.pdf
- Preliminary 3D Model
- Square tubes
- 5 mm gap between Be and tungsten
- 5 cm tube downstream since that is the clearance in sweep magnet
- Be target holder
- lead geometry
- Borated Poly geometry
- Heat absorbed by Be and Tungsten
- Requirements:
- Cool tungsten plug to below temperature that affects lead
Minutes and Action Items
- We went through the marked up sketch of overall dimensions and everyone was ok with it.
- Discussed beam size and beam pipe size. 5cm beam pipe ok to just past the sweep magnet . Need to check if the PS is 6cm. Will use 6 cm after the sweep.
- Moskov said the target is 6 cm so we do not need to be bigger than that.
- Keith presented the 3D model
- 6" (15 cm) square steel tube ok upstream of tungsten. This will make it easier to stack lead
- 5mm gap between beryllium and tungsten ok
- Square tungsten to match steel tube ok (6"), Igor will do new calculation when design finalized
- Square steel tube downstream of tungsten plug ok. Tentatively 5 cm, may be bigger if cooling tubes are needed for tungsten
- some type of cradle support for the beryllium ok.
- Vacuum tube (5 cm) to start right after target assy - is kapton window ok or is aluminum needed?
- Verify weight of lead, appears to be 18 tons (Igor's initial estimation was 12.5 t )
- Location of Be within several mm ok
- Assembly will be on rollers and move out of beamline manually
- Hovanes asked if it would be easier to fabricate beryllium if square. This needs to be looked at.
- Energy absorption in beryllium and tungsten not yet calculated
- Igor requests 16.3 g/cc for tungsten (the source is Rolf, one can check it with Bogdan)
Action Items
- Continue developing 3D model - Keith
- Find out fabrication technique for Beryllium and if square will be easier (Tim)
- Perform energy absorption calculations - Igor
- Verify Pair spec magnet beampipe size (Tim)
- Get quotes on lead bricks (Stephanie)
- Verify weight of lead (Keith)
- Start looking at cooling methods for tungsten (Stephanie, Keith, Tim)
