Phase2 ME meeting minutes 4 14 2021

phase2 ME design meeting minutes 4_14_2021

Danny, Shaun, Gary, Grames, Marcy, Poelker, Reza, Alicia

Gary presented a "vacuum tight" layout, nice

Comments:

1. wider girder, based on phase1 experience, although there won't be as many pumps hanging from side
2. that said, we want ion pump connected to side of dif pump can, rather than below (less chance of ion pump growing a whisker when mounted to side. This is a busy region, need to visit tunnel to make sure the side-mounted ion pump won't interfere with anything
3. green solenoid downstream of chopper2 cavity:

• water lines oriented other way?
• get with Neil and feel confident the old solenoid can be removed (I assume we cut off 2.75" flange, slide solenoid off)
• Danny points out, we can't have flanges inside bore of green solenoid, imagine a custom nipple with bellows, welded to chopper cavity pipe...

1. green solenoids include option to water-cool but we won't need cooling for 200 keV beam
2. replace ion pumps on today's model with those used for phase1, 25 L/s pumps with pump out port
3. Mount pumps "beam right"
4. Decide YAG vs Chromox view screens
5. make three more antenna style BPMs