ip area reconfiguration conceptual design five phases: 1.transport (a) 2.gas chamber 3.injection...

IP Area ReconfigurationConceptual Design

Five Phases:

1. Transport (A)

2. Gas Chamber

3. Injection Chamber

4. Compressor

5. Transport (B)

M. LitosJuly 24, 2014

General Motivations• Need more space in key locations for all non-

E200 laser experiments, especially diagnostic applications

• Need more independent control of low intensity beams (relative to high intensity), including attenuation, timing, and compression

• Need to have appropriate delay between high intensity and low intensity beams

• Need to be able to couple low intensity beams into experimental gas chamber

• Need more accommodating working space• Need more flexible / modular experimental setup

Direct Quote from E224 Requirements:“[They need the] ability to control probe size, delay, energy, and duration, independently of the main ionizing laser pulse. This will require splitting a portion of the main laser beam before the current compressor, the construction of a second compressor, an adjustable delay line, resizing optics, and wave front tilting prism or grating setup. All of this would require additional delay for the main, ionizing pulse. The probe profile would be more uniform than in the clipping approach used now, and the axicon focus would not be disturbed.”

PHASE 1: Transport (A) B4

B5, B6

Comp-ressor

IP Boxlong oven

breadboard

laser work space

small-comp 1

small-comp 2

• Vacuum ends after B4• Sampler after lens;

periscope down to table• Removable thin-shell

pipe from B4 to B5• Sampler before B5;

periscope down to table• Remove old EOS

chamber and Wire• Make all motor feeds on

IP Box come out on upstream side

• Lots of breadboards• Open-air compressors

lens, sampler 1

sampler 2

PHASE 1: Transport (A)

CURRENT CONFIGURATION

PHASE 1: Transport (A)

B4

lens

B5, B6

Comp-ressor

IP Boxlong oven

B4

B5, B6

Comp-ressor

IP Boxlong oven

breadboard

laser work space

small-comp 1

small-comp 2

• Vacuum ends after B4• Sampler after lens;







lens, sampler 1

sampler 2

PHASE 1: Transport (A)• Vacuum ends after B4• Sampler after lens;







B4

B5, B6

Comp-ressor

IP Boxlong oven

lens, sampler 1

sampler 2

breadboard

laser work space

• Breadboards may not be feasible on wall side

• Turbo for transport would be repurposed for compressor

• Getting turbo off of B6 opens up critical space for sampler periscope 2

• Can simply use irises to reduce low intensity beam sizes, or telescopes

• Periscopes will require proper design effort• Diagnostic lasers should enter IP Box from

side ports; no more picking off main beam

small-comp 1

small-comp 2

• Open air compressor(s) give independent compression for low intensity beams

• Diagnostic beams can arrive at IP simultaneously with high intensity beam

• Controllable delay between high intensity beam and diagnostic beams

• Directly benefits EOS, plasma imaging, Trojan Horse, THz probe(?)

• Indirectly benefits e- and e+ PWFA, hollow channel

PHASE 1: Transport (A)• Vacuum ends after B4• Sampler after lens;







B4

B5, B6

Comp-ressor

IP Boxlong oven

lens, sampler 1

sampler 2

breadboard

laser work space

Cost:• Design: ~$10k• Fab/parts: ~$20k• Installation: ~$5k• Total: ~$35k

small-comp 1

small-comp 2

Time Scale:• Design: ~1 month• Fab/parts: ~1 months• Installation: ~2 week• Total: ~ 2.5 months

• Most important and useful Phase• Solves the most problems at once• Relatively cheap and fast• If prioritized, should be doable before

next run begins• Best return on investment

gas chamber

PHASE 2: Gas Chamber B4

B5, B6

Comp-ressor

IP Box

breadboard

laser work space

small-comp 1

small-comp 2

lens, sampler 1

sampler 2

• Add gas chamber in place of oven

• Mate with the 10” bellows

• Made of several smaller modules

PHASE 2: Gas Chamber

gas chamber


PHASE 2: Gas Chamber

B4

lens

B5, B6

Comp-ressor

IP Boxlong oven

B4

B5, B6

Comp-ressor

IP Box

breadboard

laser work space

small-comp 1

small-comp 2

lens, sampler 1

sampler 2




gas chamber


B5, B6

Comp-ressor

IP Box

breadboard

laser work space

small-comp 1

small-comp 2

lens, sampler 1

sampler 2




• Can couple low intensity laser in from small compressor 1 area

• Probably need long delay stage before small compressor 1; no problem

• Directly benefits plasma imaging, Trojan Horse

• Indirectly benefits e- and e+ PWFA, hollow channel

gas chamber


B5, B6

Comp-ressor

IP Box

breadboard

laser work space

small-comp 1

small-comp 2

lens, sampler 1

sampler 2




Cost:• Design: ~$k• Fab/parts: ~$k• Installation: ~$k• Total: ~$k

Time Scale:• Design: ~ month• Fab/parts: ~ months• Installation: ~ week• Total: ~ months

• Second most important and useful Phase• Accommodates many experiments at once• Simple design (“string of cubes”) could be

implemented before next run

gas chamber

PHASE 3: Injection Chamber• Replace IP Box with

Injection chamber• > 2x as long as IP Box• ~1.5 x as wide as IP Box• Contains 2 swappable

breadboards• Many viewports• Motor feeds on

upstream end• Compatible with current

and future compressor location

• Room for gas cell, etc.• Two (clear?) lids

B4

B5, B6

Comp-ressor

breadboard

laser work space

Injection Chamber

small-comp 1

small-comp 2

lens, sampler 1

sampler 2

PHASE 3: Injection Chamber

gas chamber








B4

B5, B6

Comp-ressor

breadboard

laser work space

Injection Chamber

small-comp 1

small-comp 2

lens, sampler 1

sampler 2

gas chamber







B4

B5, B6

Comp-ressor

breadboard

laser work space

Injection Chamber

small-comp 1

small-comp 2

• Injection Chamber is large enough for redirection of high intensity beam

• Enough length to allow for coupling optic (e.g. gold mirror), EO crystal / OTR foil, and gas cell

• Mounting points for two independent breadboards (can use just one if preferred)

• “Plug and play” motor connector feedthroughs and vacuum cables for easy swapping

• EO crystal / OTR foil actuator mounted from below on breadboard(?)

• Many large flanges, e.g. 3 x 10” flange per side

• Can put flanges within flanges if smaller ones are required

• Creates room for gas cell independent of long gas chamber (can be used in conjunction with oven)

• Directly benefits EOS, plasma imaging• Indirectly benefits e- and e+ PWFA, hollow

channel• Radiabeam will make Injection Chamber• Benefit to other injection schemes?

lens, sampler 1

sampler 2

gas chamber







B4

B5, B6

Comp-ressor

breadboard

laser work space

Injection Chamber

small-comp 1

small-comp 2

lens, sampler 1

sampler 2


Time Scale:• Design: ~ 1 month• Fab/parts: ~ 1 months• Installation: ~ 1 week• Total: ~ 2.25 months

• Very useful for future oven experiments• Enables more sophisticated gas experiments• Somewhat costly, but unclear who pays (?)• Probably doable before next run begins

gas chamber

PHASE 4: Compressor• Move Compressor

upstream by ~1.5m• Extend removable thin-

shell pipe to cover distance from B6 to new Compressor location

• Probably requires relocation of LSS2 control panel

• Add many viewports to compressor

• Add flange compatible with PHASE 4

• Large coupling to I.C.

B4

B5, B6

Comp-ressor

Injection Chamber

breadboard

laser work space

small-comp 1

small-comp 2

lens, sampler 1

sampler 2

PHASE 4: Compressor

gas chamber









B4

B5, B6

Comp-ressor

Injection Chamber

breadboard

laser work space

small-comp 1

small-comp 2

lens, sampler 1

sampler 2

gas chamber








B4

B5, B6

Comp-ressor

Injection Chamber

breadboard

laser work space

small-comp 1

small-comp 2

• Provides larger contiguous working space for low intensity laser beams

• Easier for diagnostic beams to arrive at IP simultaneously with high intensity beam

• More room for diagnostics (e.g. cameras) next to Injection Chamber

• More room for multiple beams to enter Injection Chamber from Compressor

• Upgrade Injection Chamber coupling to valve with thick and thin window?

• Can monitor alignment references within compressor (e.g. zero-order angle)

• If modifying compressor to add viewports, moving it is not so much added work (gratings must be removed then reinstalled anyway)

• Directly benefits e- and e+ PWFA, hollow channel, Trojan Horse(?)

• Indirectly benefits EOS, plasma imaging

lens, sampler 1

sampler 2

gas chamber








B4

B5, B6

Comp-ressor

Injection Chamber

breadboard

laser work space

small-comp 1

small-comp 2

lens, sampler 1

sampler 2


Time Scale:• Design: ~ 1 month• Fab/parts: ~ 1 month• Installation: ~ 1 week• Total: ~ 2.25 months

• Creates extremely useful contiguous laser work space

• Creates extremely useful added delay to high power laser beam path

• If modifying compressor box anyway (new viewports), might as well move it, too

gas chamber

PHASE 5: Transport (B)• B5 now periscopes UP to

B6• Removable thin-shell

pipe at ceiling height goes over compressor to B7

• B7 periscopes down to B8

• Laser enters compressor from upstream side

B4

B5, B6

Comp-ressor

Injection Chamber

B7, B8

breadboard

laser work space

small-comp 1

small-comp 2

lens, sampler 1

sampler 2

PHASE 5: Transport (B)

gas chamber







B4

B5, B6

Comp-ressor

Injection Chamber

B7, B8

breadboard

laser work space

small-comp 1

small-comp 2

lens, sampler 1

sampler 2

gas chamber






B4

B5, B6

Comp-ressor

Injection Chamber

B7, B8

breadboard

laser work space

small-comp 1

small-comp 2

lens, sampler 1

sampler 2

• Gets transport out of the way, creating more working space for people

• Increases delay of high intensity pulse—may or may not be beneficial

• Can remove transport tube to open compressor lid, if necessary

• Directly benefits humans working in IP area

gas chamber






B4

B5, B6

Comp-ressor

Injection Chamber

B7, B8

breadboard

laser work space

small-comp 1

small-comp 2

lens, sampler 1

sampler 2


Time Scale:• Design: ~ 1 month• Fab/parts: ~ 1 months• Installation: ~ 1 week• Total: ~ 2.25 months

• Mostly motivated by spatial constraints of tunnel—creates more space for people

• Adds yet more delay to high power laser [too much??]

• Probably useful, but least important Phase; may want to defer until later

Additional Useful Upgrades• Fast and easy remote transport alignment

• Keep transport aligned during experimental shifts and PAMMs

• Allow non-SLAC laser users to easily align transport without help

• High power in tunnel during access• Only prevented by RP• Needed for precise alignment of low

intensity beams• Two modes:

• high power w/o axicon• low power w/ axicon

• Remote aperture control for high power (or low power) beam• For alignment• For experiment

• EOS as laser/e-beam timing feedback• e-beam phase cavity diagnostic

Additional Considerations• THz probe beam setup

• PHASE 1 should accommodate nicely• Witness beam photo-injector• Other experiments??

Phase 1: Transport (A)• critical, high value, can be done before next run

Phase 2: Gas Chamber• critical, high value, can be done by Jan.

Phase 3: Injection Chamber• very useful for oven, useful for gas, can be done

before next run

Phase 4: Compressor• very useful, can be done before next run, but

contingent upon Injection Chamber

Phase 5: Transport (B)• probably useful, can be done by Jan., but contingent

upon Compressor

Synopsis

ip area reconfiguration conceptual design five phases: 1.transport (a) 2.gas chamber 3.injection...

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