Difference between revisions of "Wednesday November 1, 2017 3:00pm ET"
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* Preparation for MOLLER tracking meeting - status | * Preparation for MOLLER tracking meeting - status | ||
| − | ** Radiation dose estimates/material irradiation | + | ** Radiation dose estimates/material irradiation [https://hallaweb.jlab.org/wiki/images/1/18/Coil_scan_summary.pdf summary] |
| − | ** Upstream sensitivity studies | + | ** Upstream sensitivity studies [https://hallaweb.jlab.org/wiki/images/c/c4/Spectrometer_update_11-1-2017.pdf summary] |
| − | ** Beamline fringe field effects | + | ** Beamline fringe field effects |
** MIT activities | ** MIT activities | ||
*** impact of environmental variations | *** impact of environmental variations | ||
| Line 23: | Line 23: | ||
== Minutes == | == Minutes == | ||
| − | Attended: | + | Attended: Juliette, Seamus, Cameron, Jim, Ernie, KK |
| − | + | ||
| + | * Preparation for MOLLER tracking meeting - status | ||
| + | ** Need to go back to reviewers and ask what they meant, if we need to | ||
| + | ** create a timeline for next 6 months | ||
| + | ** Radiation dose estimates/material irradiation [https://hallaweb.jlab.org/wiki/images/1/18/Coil_scan_summary.pdf summary] | ||
| + | *** have located some "hot spots" | ||
| + | *** need to convert to doses | ||
| + | *** compare to radiation hardness for various materials (epoxy, insulating tape) | ||
| + | *** quantify known materials, is it good enough for MOLLER | ||
| + | ** Upstream sensitivity studies [https://hallaweb.jlab.org/wiki/images/c/c4/Spectrometer_update_11-1-2017.pdf summary] | ||
| + | ** Beamline fringe field effects | ||
| + | ** MIT activities | ||
| + | *** impact of environmental variations | ||
| + | **** expanding and contracting uniformly (that's how water system is being designed) | ||
| + | **** heat load on hot day - just run hotter | ||
| + | **** we need to cool our water anyway - our refrigerator design | ||
| + | *** floor loading - probably not a concern (each component less than what crane can lift) | ||
| + | **** spring of '18 - would floor sagging affect physics? | ||
| + | **** shielding around target bigger issue | ||
| + | **** dialogue between MIT and survey group | ||
| + | **** does target sinking affect rest of experiment? | ||
| + | ** beamline - Silviu's designer | ||
| + | *** downstream of vacuum vessel - exit window | ||
| + | *** coupling between vacuum vessel and beamline | ||
| + | * Also need to remember things that we want to keep working on that aren't on the list | ||
| + | ** collimator supports | ||
| + | *** movable collimator - needs work - concept based on SLAC design | ||
| + | *** need space where shielding might exist right now | ||
| + | *** linear stage and hard stop | ||
| + | ** water-cooled collimator | ||
| + | *** same system as coils | ||
| + | *** feasibility with cooling and physics | ||
| + | ** budgetary bids only | ||
| + | ** upstream vacuum vessel | ||
| + | *** inner-photon collimator - independent of motion of chambers | ||
| + | * Test coil status/homework | ||
| + | ** Conductor needs to be straightened before it can be used | ||
| + | ** Test plan/schedule | ||
| + | *** thermal tests with thermal gun | ||
| + | *** temperatures, flow rates as power ramped up | ||
| + | *** field measurements | ||
| + | *** keystoning - we will see during manufacture | ||
| + | *** stiffness of coil - surveying to look at sagging, etc. | ||
| + | *** eddy currents and additional cavitation - would need to run for too long so no | ||
| + | * blocky model for new coils | ||
| + | * Next meeting | ||
<br><br> | <br><br> | ||
Latest revision as of 16:11, 1 November 2017
Last meeting: Wednesday October 18, 2017 2:00pm ET
Agenda
- Preparation for MOLLER tracking meeting - status
- Test coil status/homework
- Objectives
- Test plan
- Schedule
- Next meeting
Minutes
Attended: Juliette, Seamus, Cameron, Jim, Ernie, KK
- Preparation for MOLLER tracking meeting - status
- Need to go back to reviewers and ask what they meant, if we need to
- create a timeline for next 6 months
- Radiation dose estimates/material irradiation summary
- have located some "hot spots"
- need to convert to doses
- compare to radiation hardness for various materials (epoxy, insulating tape)
- quantify known materials, is it good enough for MOLLER
- Upstream sensitivity studies summary
- Beamline fringe field effects
- MIT activities
- impact of environmental variations
- expanding and contracting uniformly (that's how water system is being designed)
- heat load on hot day - just run hotter
- we need to cool our water anyway - our refrigerator design
- floor loading - probably not a concern (each component less than what crane can lift)
- spring of '18 - would floor sagging affect physics?
- shielding around target bigger issue
- dialogue between MIT and survey group
- does target sinking affect rest of experiment?
- impact of environmental variations
- beamline - Silviu's designer
- downstream of vacuum vessel - exit window
- coupling between vacuum vessel and beamline
- Also need to remember things that we want to keep working on that aren't on the list
- collimator supports
- movable collimator - needs work - concept based on SLAC design
- need space where shielding might exist right now
- linear stage and hard stop
- water-cooled collimator
- same system as coils
- feasibility with cooling and physics
- budgetary bids only
- upstream vacuum vessel
- inner-photon collimator - independent of motion of chambers
- collimator supports
- Test coil status/homework
- Conductor needs to be straightened before it can be used
- Test plan/schedule
- thermal tests with thermal gun
- temperatures, flow rates as power ramped up
- field measurements
- keystoning - we will see during manufacture
- stiffness of coil - surveying to look at sagging, etc.
- eddy currents and additional cavitation - would need to run for too long so no
- blocky model for new coils
- Next meeting
