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H- INJECTION:STATUS ON MECHANICAL DESIGN

- VACUUM SECTORIZATION- BHZ162 CHAMBER MODIFICATIONS- DESIGN @ DUMP AREA- BHZ11 CHAMBER MODIFICATIONS

PSB H- Injection - Design Technical Meeting – 3rd October 2013

3/10/2013 Marco Garlaschè

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3/10/2013 Marco Garlaschè

Vacuum Sectorization:

• Not enough space for all sectorization-related components in the stripping area

• Radiation dose should be minimized for maintenance interventions on the injection dump area

ACTION (TE/VSC): determine alternative sectorization scenarios and evaluate impact on vacuum performance

Stripping foil sector: initial baseline configuration

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3/10/2013 Marco Garlaschè

Different options presented (Design Tech.Meet 03/07/2013)

Options # 4 & 5 chosen for followup

• Option 4 causes more dose @ intervention on downstream valves

• Option 5 foresees venting of dump at each maintenance

TMP gate

2X SIP

Dump

BHZ162

OPTION 4

OPTION 5

TMP gate

2X SIP 2X SIP

Dump

BHZ162 BHZ11

Courtesy C. Pasquino

ACTION (TE/VSC): finalize impact evaluation on vacuum performance for two options

Vacuum Sectorization:

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3/10/2013 Marco Garlaschè

Results for pumping down times:(PSB Upgrade WG @ 19/09/2013 presentation)

• Option 4: +2 hrs w.r.t. baseline• Option 5: +4.5 hrs w.r.t. baseline

Option 5 is new baseline (minutes)

NOTE: choice valid only if dump degassing stays similar to current estimation (i.e. Bulk SiC)

ACTION (TE/VSC & EN/STI): Study the impact of a sliced H-/H0 dump on the pumping down time for option 5

BASELINE

Vacuum Sectorization:

ongoing

Courtesy J. Hansen

NOTE: Option 5 has been studied w. Dump all @ 200C conservative as average Tdump shall be lower

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3/10/2013 Marco Garlaschè

Option 5: Integration

ACTION (EN/MME): evaluate integration for option 5 sectorization

completed

Courtesy L.Zuccalli

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3/10/2013 Marco Garlaschè

• Sectorization implemented• Corrector magnet design

ongoing.• For the moment no integration

issue foreseen. Fig. 3

Aimants correcteur DVT70

• BHZ 162 is first constraint for correctors

• Min. distance between correctors and BHZ162 = 57mm

Option 5: Integration

COMMENTS??

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3/10/2013 Marco Garlaschè

Option 5: Integration

Equal system already present on PSB line (ref. Dwg. PSBHVI__00021)

BHZ11

• No integration issue foreseen.

• Bellow needed between valve and chamber (position errors)

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3/10/2013 Marco Garlaschè

System is attached to top of BHZ magnets, as for other PSB sectors

Option 5: Integration

BHZ162

• No integration issue foreseen.

• Bellow needed between valve and chamber (position errors)

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3/10/2013 Marco Garlaschè

Option 5: Integration

Pumping system implemented

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H- INJECTION:STATUS ON MECHANICAL DESIGN

- VACUUM SECTORIZATION- BHZ162 CHAMBER MODIFICATIONS- DESIGN @ DUMP AREA- BHZ11 CHAMBER MODIFICATIONS

PSB H- Injection - Design Technical Meeting – 3rd October 2013

3/10/2013 Marco Garlaschè

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3/10/2013 Marco Garlaschè

Injection VS. BHZx : Joining

BSWx

BHZx

Misalignment error to be accounted for, as could cause rupture of ceramic flanges

Little space between components

Vacuum maintenance:• 12 mm axial

compression for Ag gasket insertion

• Low transversal forces desired

• Intermediate edge-welded bellow.• Company feedback (for our racetrack section):

max misalignment error ±1.5mm

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3/10/2013 Marco Garlaschè

Possible issue! ACTION: get final value of position error

BHZ162 Chamber: Current Configuration

Upstream Connection

Downstream Connection (Injection)

ChamberFixation/regulation elementsPipeHydroformed bellow

• Current alignment system not precise : connections position error>±2mm

• For the moment, further regulation would be obtained with deformation of semirigid hyperstatic element (undulated chamber).

Ref. dwg: SI 3.49.1542

NOTE: chambers with bellows at both extremities are present on the PSB line

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3/10/2013 Marco Garlaschè

New bellow for sector valves Current bellow and small chamber removed due to new injection compatibility

ACTION:• modify fix./reg. system?• Evaluate effects of regulation on

semirigid element

BHZ162 Chamber: Future Configuration

Can modifications be done on current chamber in tunnel?...precise cut of chamber, weld in small spaces..

Baseline future BHZ162 : modifications to spare on surface

Sector valves

NOTE: same considerations can be drawn for BHZ11 (sector at its exit, bellow present)

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H- INJECTION:STATUS ON MECHANICAL DESIGN

- VACUUM SECTORIZATION- BHZ162 CHAMBER MODIFICATIONS- DESIGN @ DUMP AREA- BHZ11 CHAMBER MODIFICATIONS

PSB H- Injection - Design Technical Meeting – 3rd October 2013

3/10/2013 Marco Garlaschè

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3/10/2013 Marco Garlaschè

Following dump review (18/04/2013), baseline configuration for dump is SiC bulk (PSB Upgrade WG 13/6/2013)

Baseline dump design status:

SiC

ACTIONS MME:• Dump Design

o cooling systemo support systemo eventual shielding

• Resistance of magnet to heating from dump

ongoing

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3/10/2013 Marco Garlaschè

Swelling of SiC at low dpa unknown bulk option may suffer excessive damage (2-3 yrs expected life)

New draft concept design shown (Design Tech.Meet 31/07/2013)

SiC slices + Ti slices SiC slices + Sic core in Ti Jacket

Metal bulk (Al, Ti..)

Dump design: new outcomes

ACTION EN/MME: STI requests evaluation of feasibility and integration

completed

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3/10/2013 Marco Garlaschè

Dump design: Integration proposals

• Edge-welded bellow on BSW4 side• Δz = 54 mm

Δz : max distance between downstream surface of red plate and downstream surface of dump

• Edge-welded bellow on BHZ11 chamber

• Δz = (15+70+15) mm

Proposal 1 (Sliced dump)

OPEN QUESTION: which is min Δz for not disturbing ?

Proposal 2 (Metal dump)

Δz = 54 mm

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H- INJECTION:STATUS ON MECHANICAL DESIGN

- VACUUM SECTORIZATION- BHZX CHAMBER MODIFICATIONS- DESIGN @ DUMP AREA- FURTHER BHZ11 CHAMBER MODIFICATIONS

PSB H- Injection - Design Technical Meeting – 3rd October 2013

3/10/2013 Marco Garlaschè

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3/10/2013 Marco Garlaschè

BHZ11 Chamber: Current & Future Configuration

Current bellow (useable for sectorization)

Future Edge-welded bellow, in case of metal dump

NOTE: chambers with bellows at both extremities are present on the PSB line

• Metal dump case would add one manipulation to BHZ11 chamber• Most probably done on surface

Ref. dwg: SI 3.49.1215

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3/10/2013 Marco Garlaschè

CONCLUSIONS

Evaluation performed on sector. option 5: feasible

Also with baseline dump config. (bulk SiC) and whatever sector. option:- BHZ162 chamber needs to be changed (alignment issue + sector.)- following misalignement measurement, BHZ11 chamber may be changed Need for alignment design?

Integration of new dump proposals studied:- BHZ11 chamber needs to be changed for metal dump case

ACTIONS:Sliced H-/H0 dump: concept. design & impact pumping down Current BHZx chambers: value of position errorFuture BHZx chambers:

• modify fix./reg. system?• evaluate effects of regulation on semirigid element

Baseline dump:• design (cooling, support, shielding)• resistance of magnet to heating from dump Need input:

• PLOSS

• temperatures• Cooling on for chamber?• Can magnet cooling

absorb dump heat?