1. Status of the CCC for CRYRING / FAIR
24th June 2019, CCC Collaboration Meeting, CERN
Thomas Sieber
Status of the CCC for CRYRING / FAIR
CCC Collaboration Meeting
Thomas Sieber
24th June 2019 1

2. Outline CCCs ar CRYRING and FAIR - Status of the Cryostat
CCCs ar CRYRING and FAIR
- Status of the Cryostat
Experimental work
Time schedule
CCC Collaboration Meeting
Thomas Sieber
24th June 2019 2

3. CCC at CRYRING / FAIR FAIR GSI Cryring
Non-destructive intensity measurement for low intensity beams at FAIR
Examples:
Proton Linac
UNILAC
SIS18
SIS100
FAIR
1) Slow extracted beam from SIS100
Extraction time up to 10 s
GSI
CBM
Cryring
PANDA
Super FRS
Cycle
Ion species
Energy
No. of particles
Extraction time
Max. Current
RIB
U28+
2.7 GeV/u
5E11
2 s
1.12 µA
CBM
U92+
10.6 GeV/u
1.5E10
10 s
22 nA
HESR CR
NuSTAR
CCCs original planning
CCCs additionally
2) Circulating Beam in Collector Ring (CR)
Basic idea of CCC:
Precise measurement of azimuthal magnetic field (fT-range) using DC-SQUIDS
Mode
Species
Energy
Intensity
Revolution Frequency
Max. Current
pBar
3 GeV
< 1E8
1.37 MHz
22 µA
RIB
U28+
740 MeV/u
< 1E9
1.17 MHz
5 mA
Isochr.
790 MeV/u
1E8
1.18 MHz
529 µA
CCC Collaboration Meeting
Thomas Sieber
24th June 2019

4. Status of the FAIR Cryostat
Preliminary cryostat design finished mid 2016
Funding problems, FAIR budget not available (CCC as HEBT diagnostics)
Funding confirmed by HIJ beginning of 2018
Call for tender 03/2018
Contract signed with ILK Dresden 06/2018
4 + 5 months for detailed design and production, costs 140 k€
problems with ceramic gap, delay and additional costs (25 k€)
(delay partly caused by enthalpy cooling design)
steering meeting Dec. 2018, deadline for detailed drawings 02/2019
review of 2D drawings March – June
ceramic gap ordered (34 weeks delievery time)
production starts NOW, 14 months after delivery time fixed in contract
Meeting with ILK next week ...
CCC Collaboration Meeting
Thomas Sieber
24th June 2019 4

5. Design of the CCC for FAIR
FAIR/CRYRING cryostat
Top plate, feedthroughs, He filling
FAIR CCC (FAT in April 2017)
850
Vacuum chamber (AISI304)
Windows (Al)
250 mm
Suspension rods (Ti)
He lines / enthalpy cooling
Thermal shield (Cu)
MLI
65 kg
1200
Liquid He container
WEPCF07
V. Tympel
CCC
150mm UHV beam tube
(ceramic gap)
System costs
Nb CCC k€
Cryostat k€
Liquefier k€
SQUID + electronics k€
DAQ k€
Support k€
Total ~ 500 k€
Goal < 300 k€
Thermal shield tube
(air gap)
He container inner tube
(ceramic gap)
Pickup unit PEEK spacers
Connection to
refrigerator (Cu strips)
CCC support
 ANSYS© model for vibration analysis
24th August 2017
IBIC 2017
Thomas Sieber 5

6. Cryostat for CRYRING / FAIR
Safety valves
Exhaust line
He filling line
Fixation point suspensions
Aluminum windows
and handles
He container
Steel frame
CCC
Thermal shield with
cooling lines
Maintenance windows
shield / He container
Beam tube
Bottom plate, conn. for
turbopump and coldhead
CCC Collaboration Meeting
Thomas Sieber
24th June 2019

7. Isolation Vacuum Chamber Frame
- Stainless steel
1.4306
- Frames welded
together
CCC Collaboration Meeting
Thomas Sieber
24th June 2019

8. Thermal Shield I Designed for enthalpy cooling 15 m tube, 10 mm ID
cold head connection at bottom
shield separately fixed at top plate by threaded rods
CCC Collaboration Meeting
Thomas Sieber
24th June 2019

9. Thermal Shield II Exhaust line connected at the shield bottom first
 ascending gas during warmup
CCC Collaboration Meeting
Thomas Sieber
24th June 2019

10. He Container 2 maintenance windows equal length suspensions
calculated by NM
CCC Collaboration Meeting
Thomas Sieber
24th June 2019

11. Experimental Work liquefier in operation 15 l/day ok
Production of UHV cryostat is running. Installation in CRYRING in 2020
1200
Liquefier
Head
Vacuum Chamber
Aluminum
Window
Thermal
Shielding
Beam
Tube
Helium
Container
CCC Shield +
Detector
Steel
Frame
liquefier in operation
15 l/day ok
vibration measurement with acc.meter and SQUID ongoing (Master Thesis)
Next step, Design of exhaust line and improved controls
radiation tests with SQUIDS performed (09/2018; 1 kGy)
CCC Collaboration Meeting
Thomas Sieber
24th June 2019

12. Summary / Time Schedule
Next steps:
ILK guaranteed production until October
FAT and SAT part 1done with dummy beam tubes
Bakeout tests at GSI (hallogen lamps)
Feb/March Sat part 2 with ceramic gaps
Installation in CRYRING mid 2020
In the meantime:
Construction of coreless CCC at IPHT (Sep.)
Design of exhaust gas system
Prepare test setup at GSI
We still rely on modular setup and easy replacement of components in case of problems
CCC Collaboration Meeting
Thomas Sieber
24th June 2019

13. Space (temporary) available for CCC
Tests in CRYRING start 2020
CCC Test/Operation in
Cryring = Swedish inkind contribution to FAIR
Beam from ESR for Atomic Physics experiments
Currently under commissioning (vacuum, ecool)
Remains operational during FAIR shutdown !!!
CCC: → tool for commissioning
→ support for experimental program
→ test bench for further development
CCC test program
- Radiation hardness test at SIS18 in 2018 beamtime
After CRYRING installation in 2020
- check new cryostat design + reliquefier scheme
- verification of FAIR CCC lab results
- Lead / Niobium comparison
- alternative shielding geometries
 CCC without toroid / new SQUID types
- FESA class for CCC
- improve MAGNICON electronics
- bakeable CCC version ?
And in the following
- CCC with reference SQUID
- CCC cascades for enhanced dynamic range
- resonant operation for single particle detection
+ many other new ideas 
Space (temporary) available for CCC
CCC Collaboration Meeting
Thomas Sieber
24th June 2019 13

14. Thank you for your attention !
CCC Collaboration Meeting
Thomas Sieber
24th June 2019 14