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:

wider girder, based on phase1 experience, although there won't be as many pumps hanging from side
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
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...

green solenoids include option to water-cool but we won't need cooling for 200 keV beam
replace ion pumps on today's model with those used for phase1, 25 L/s pumps with pump out port
Mount pumps "beam right"
Decide YAG vs Chromox view screens
make three more antenna style BPMs
Bellows after chopper 2, yes it's there (good) but need to get rid of flanges inside the green solenoid
Visit tunnel, buncher, does it have flanges? getting the connection correct at upstream cross
flange mounted NEGs on first viewer cross, on harp cross, and on third viewer cross
buncher, we want an alignment support fixture
viewer 2, too close for an emittance measurement? Joe will check...
add an all metal valve upstream of dif. pump can
FCup1 should come up from below, duplicate the arrangement of PCup from phase1
need alignment fixture for dipole
to save space (?) the harp cross could also include a viewer...
harps resolve spots down to 20um, YAGs resolve down to 100um
add a BPM on spectrometer line
wherever there's a haimson steering magnet set, there should be an antenna BPM (straight ahead line)
order more haimsons

action items:

Navigation menu