Overview of Prototype Booster - Disclaimer This talk We have no idea today if this will be the prototype booster - Indico
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Overview of Prototype Booster
Disclaimer
We have no idea today if this will be the prototype booster
This talk
Focus on Proto3 production and planned tests
which are only one ingredient towards the design of the
prototype booster
25.05.2022 Erika Garutti 1
Overview of Prototype Booster
Disclaimer
We have no idea today if this will be the prototype booster
This talk
Focus on Proto3 production and planned tests
which are only one ingredient towards the design of the
prototype booster
25.05.2022 Erika Garutti 2
Time Plan
Prototype = Proto3
è prepare meas. plan
2nd cooldown:
for each cooldown
with booster &
€
1st cooldown: cryo receiver cryo 30k
acceptance test
No booster! k€
30 2024 Mechanical test @ ~2 T
Maybe receiver ??
2025 Noise calibration,
boost factor calibration,
“physics” data
25.05.2022 Erika Garutti 3
Time Plan
Prototype = Proto3
Recent update from Noell:
Unclear schedule for material delivery / cryo production
Need to prepare for increase of cost and time delay
è prepare meas. plan
for each cooldown
2025 Mechanical test @ ~2 T
2025+ Noise calibration,
boost factor calibration,
“physics” data
Plan for CERN 2024 discussed at the end
25.05.2022 Erika Garutti 4
Aim of MORPURGO tests of Proto3
2025 Mechanical test @ ~2 T
Validate the following aspects in magnetic field:
• Control signals transmission / pickup on command lines (motors & interferometer)
• Calibration of disk / interferometer position during cooldown and ramping of B field
• Relative disk adjustment, test of interlock system
• Motor speed in magnetic field
• Disk position adjustment time
• Temperature profile inside cryostat, as function of adjustments
• …
Further tests beyond mechanics:
Measurements with VNA:
• Reflectivity measurement at 4 K
• Reflectivity measurement w, w/o B field comparison
• Calibration procedure using gradient method
• …
Measurements with receiver system:
• System noise/temperature calibration ???
25.05.2022 Erika Garutti 5
Overview of components
cryostat
What is what?
DAQ1 System
Receiver cryostat
HF
amplifier
Horn antenna
optics
HF Box
25.05.2022 Erika Garutti 6
Overview of components
Ordered, detailed design phase should finish with production-ready design begin of July
Delays in production to be expected due to current market situation
(can only be quantified once tendering for components/vessels start on BNG side)
Need to buy cryocoolers (no funds secured yet): - need to order in ??
225 k€ net / 5 coolers (possible to add 5th cooler only later), 4 months delivery time
Not entirely clear when needed exactly in the production process!
Need to buy vacuum pumps (no funds secured yet): - need to order in ??
50 k€ (?) / two pumping pumps, ?? weeks delivery
Design and layout of pumping system still to be done – by who?
25.05.2022 Erika Garutti 7
The MADMAX Prototype Cryostat
MADMAX Prototype Cryostat Cryogenic interfaces
Pulsetube cryocoolers
Optical fiber feedthroughs Prototype Booster
Expansion vessel
Inner vessel RF absorbers
Vacuum pumping groups
Outer vessel
Electrical feedthroughs
Focusing mirror
Interface for rail system
Receiver cryostat Horn antenna & receiver
25.05.2022 Erika Garutti 8
The MADMAX Prototype Cryostat
(Ongoing) main tasks and focusses in the detailed design phase:
• Temperature distribution over the inner vessel (max. T difference of 1 K specified)
• Pumping port for inner vessel (reduction of heat load, challenging due to restricted space)
• Implementation of a 5th cryocooler slot which could be equipped later if more cooling power is required
• Cooling power transfer from 2nd cryocooler stages to re-condenser
• Safety considerations: layout of safety lines etc.
Important notes:
• Costs for cool-down also include needed hardware material, e.g. helicoflex seals for inner vessel etc. (inner vessel
endcap seals: > 1 k€ per piece, not re-usable)
25.05.2022 Erika Garutti 9
Receiver cryostat
• Thermal budget: 10 W for the 1st stage (thermal shield) and 1 W for the 2nd stage (4K)
• RC cooled passively through the main cryostat:
• Cables introduce a lot of heat à routed through the main cryostat (to keep the receiver
as cold as possible)
• Copper braids between vessels
• Use of MLI
• Possibility of implementing a vacuum port at the RC outer vessel
10Receiver cryostat
• Receiver chain à still unknown à depends on the booster setup
• We need flexibility à Over-engineering!
• Priorities : Design of the vessels + order z-motor for testing (2mm/s @4K)
• Rough schedule:
• Finalise design of the vessels à June 2022
• Order z-motor (company Phytron) à delivery end of August 2022 2
6 5
• Test z-motor in the cold à September 2022
1. Inner vessel (Cu)
2. Thermal shield (Al) 1
3. Outer vessel (stainless steel) 3 MPC
4. Antenna 4
5. Absorber
6. Anchor points
7. Cart for antenna + receiver 7
11Receiver cryostat
Component Subparts Material/Type Purchase from Work required Work done where Comments
Vessels Inner Cu External 170 kg
Thermal shield Al (6061) External 16 kg
Outer 1.4404 External 183 kg
Flanges to MPC 450 COF – interface to inner vessel Stainless steel – DN450COF Vacom Hard solder to Cu inner vessel MPP workshop
flange to thermal shield (with flaps?) Al (6061) - Ø580 mm Part of the vessel (made in one piece with the To be decided
vessel) or welding???
DN630 ISO-F – interface to outer vessel 1.4404 – DN630-ISO-F MPP design + manufacture externally MPP workshop à welding
RC flanges - interfaces Cu vessel Stainles steel COF-450 Vacom
Thermal shield Ring (tbd) Probably one piece with the cylinder
Outer vessel MPP design + manufacture externally
RC flanges (end caps) Cu vessel End flange with vaulted disc Vacom, Pfeiffer Standard part
Thermal shield Simple lid - Al MPP workshop >5 kg
Outer vessel Klöpperboden External ? MPP design + manufacture externally Weld at MPP Standard part
Gaskets to MPC Cu vessel Cu gasket
Thermal shield ----- ----------- -------- Apiezon-N
Outer vessel O-ring Noell -------
Gaskets RC Cu vessel Cu gasket
Thermal shield ----- ----------- -------- Apiezon-N
Outer vessel Helicoflex or O-ring
12Overview of components
HighFinesse è New concept for fixing reflectors
- 3 arms interferometer installation in P200: 12.09.2022 on disks
- Test at CERN cryo lab: 10.2022
è Proof of cryo compatibility
Attocube
- Already tested, works for our system, no absolute measurement
- 9 arms interferometer can be purchased, quotation and delivery time on the way
- Tübingen is trying to ensure finances
è For Proto3 we need a flexible design to accommodate both
This affects: disk rings, support rings, feedthroughs
è Dedicated meeting between engineers (Marseille,
UHH, Tübingen should be organized asap)
25.05.2022 Erika Garutti 13Overview of components
Need to adjust the design for interferometer mirror – decision needed latest ??
Disks:
• 5 Sapphire disks with 300 mm ⌀ delivered to Aachen
• One will be characterized in Marseille for flatness soon
• 3 to be installed in Proto3
25.05.2022 Erika Garutti 14Overview of components
Need to be ordered (no funds available): - need to order in July
30 k€ / 9 motors, 16 weeks delivery
Motor control system: need new design due to no long term availability of electronic components
25 k€ / 3 disks, 16 weeks delivery
New developed hardware will be DOOCS compatible
25.05.2022 Erika Garutti 15Overview of components
Proto3 will initially be equipped with JPE carriages (like in P200) – 9 will be produced in Aachen
Note: minimum disc-to-disc distance in Proto20 = 6.2 mm è f < ?? GHz
Carriages & rails
25.05.2022 Erika Garutti 16Mirror mounting & positioning
• Mirror cannot be moved remotely, but can be adjusted with open cryo.
• for instance it can be driven to the end of the mechanical structure
25.05.2022 Erika Garutti 17Overview of components
This includes the control of motors + interferometer, T sensors
but also of the cryostat(s) [vacuum, cryo-coolers, …] – task not assigned yet
25.05.2022 Erika Garutti 18Plan for assembly
Backbone assembly Q4 2022
Interferometer integration and calibration Attocube Q1-2023
Slow control Responsibility to be assigned
Room T booster commissioning Q2/Q3-2023
Cryostat delivery in SHELL (empty cool down) Q4- 2023
Commissioning at RT inside cryo Q1-2024
à Detailed understanding of RT behavior inside cryostat
à Develop reliable and "quick" calibration method
Cooldown with Proto3 Q2-2024
à Change of RF behavior when cooling down
à Test calibration method in cryo
25.05.2022 Erika Garutti 19The big picture
Requirements for RF measurements at T=5K, B=1.6 T to make sense:
• Need understanding of modes different from booster peak
• Validated system temperature calibration available
• T_sys(5K) …
à Detailed understanding of RT behavior inside cryostat
à Change of RF behavior when cooling down
à Develop reliable and "quick" calibration method
NEED TO UNDERSTAND: What does calibration mean?
25.05.2022 Erika Garutti 20The big picture
Due to the cryo delivery delay:
à Need to prepare an alternative physics plan for 2024 @ MORPURGO without cryo
Alternatives:
- CB200 + CERN cryostat ?
-…
next ExeB …
RF & mechanics R&D strategy – proposed scenarios:
1. Keep mechanical and RF tests decoupled
2. Merge RF & Mechanical test immediately in proto3 without design changes ç Strategy of choice aiming at
3. Merge RF & Mechanical test after reconsideration of proto design Proto3 run @ MORPURGO in
2024
May need to be rediscussed now
25.05.2022 Erika Garutti 21The big picture 1. Keep mechanical and RF tests decoupled for now à Use Proto3 to do mechanics tests only à Use "CB" like setup for physics in MORPURGO à Build Proto3 as quickly as possible à Design and build suitable CB for MORPURGO à use proto3 in MORPURGO for mechanic tests PRO: Quickest R&D progress for both, mechanics & RF possible CON: Not clear whether RF response of booster with current design can be understood à some for the mechanics R&D not relevant? 25.05.2022 Erika Garutti 22
The big picture 2. Merge RF & Mechanical test immediately in proto3 without design changes à Use Proto3 to do mechanics tests à Build Proto3 as quickly as possible à Integrate receiver & DAQ chain à Use in MORPURGO PRO: à Full integration of "baseline" setup CON: à Likely no understanding of RF response at MORPURGO 25.05.2022 Erika Garutti 23
The big picture 3. Merge RF & Mechanical test after reconsideration of proto design à Define "hybrid" booster design: use best of both: for example use moving parts & static disc components à Design new booster using all available mechanical input (rings, discs, motors, …) à Install into cryostat at RT à Use for mechanical & physics test in MORPURGO PRO: Potentially optimum output for mechanics & physics … CON: Not yet clear what a "hybrid" should look like Need additional discussion and design time à Time line not suitable for MORPURGO integration 2024/25? 25.05.2022 Erika Garutti 24
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