1. Martyn Davenport 2nd December 2005
CAST FRC-D
Status of Contributions, Draft Budget Request for 2006 and Outlook for the Longer Term Future  
Martyn Davenport
2nd December 2005

2. Outline Status of Common Fund T297400 Draft Budget Request 2006
Status up until 31 December 2004
End of Phase I
Status for 2005 up until 31 November 2005
Start of Phase II
Draft Budget Request 2006
Overall Financial Situation and Future Outlook

3. Status of Common Fund (T297400) 2004 up until 31 December 2004 End of Phase I
General level of contributions from all institutes
Cash contributions kCHF (Table 1)
Expenditure inside institutes 1134 kCHF (Table 2)
Time profile of contributions and expenditures (Table 3 & 4 respectively)
Sum over all years now amounts to M CHF
105% promised in MOU
Some institutes have exceeded their committements
Others still have outstanding committements ( 1.6 % of original MOU)
Common Fund balance on
149.8 k CHF (Table 3)

4. Table 1: Details of CF Cash contributions (up to 31.12.04)
Table 2 : Details of expenditure in collaborating institutes (excl. CERN) (up to )
Table 3: Common Fund Budget T297400
(up to )
Table 4: Expenditure of collaborating institutes (up to )

5. Outstanding Committements
Outstanding contributions from the CAST Institutes:
See Tables A1,A2
50 kCHF (1.6%)
Dominated by 43 kCHF from Greece.
Cast understands that one half will be paid soon
CERN contribution to magnet operation (1265 kCHF):
Summary of magnet operation costs (see Table A3)
987 kCHF used by end of 2004
Remainder used for the shorter program in 2005

6. Table A1 : Total financial Contributions as agreed in MOU - updated

7. Table A2 : Status of Common Fund Contributions (excl
Table A2 : Status of Common Fund Contributions (excl. CERN magnet operation)

8. Table A3 : Status of Common Fund Contributions (incl
Table A3 : Status of Common Fund Contributions (incl. CERN magnet operation)

9. Start 2005 up until 31 November 2005
Start of Phase II accounting
Inherit balance of 150k CHF in Common Fund
100.3 kCHF Phase I
49.5 kCHF Freiburg Phase II vacuum
General level of contributions from all institutes
Cash contributions 51.3 kCHF (Table 5)
Per capita 3.0kCHF
Expenditure inside institutes kCHF (Table 6)
Time profile of contributions (Table 7)

10. Table:5 Details of Phase II CF cash contributions up to 31.10.05
Table:6 Details of expenditure in Collaborating Institutes (excl CERN) up to

11. Ambitious program for 2005 largely completed
Table:7 Time profile of Phase II Common Fund Budget T up to
Balance of Common Fund
44.5 kCHF (on )
Ambitious program for 2005 largely completed
~ 30kCHF upgrades to cryostat vacuum pumping and monitoring
~ 50kCHF 4He gas system and temperature monitoring
~ 20kCHF on cold window development
SACLAY, FREIBURG, CERN ‘in kind’ contributions

12. 2005 program Modifications to magnet movement system and ‘Potence’
Detailed checking of magnet tracking behaviour
Installation of a new vacuum system
Preparation of a provisional 4He gas system
Opening of the magnet cryostat
Install cold windows and additional instrumentation
Cool down and 4He test filling of magnet cold bore
Quench tests
Commission gas system
First low-pressure 4He data taking runs
(Second half 2005 – final design and ordering of Phase II gas system)
2 openings of cryostat:
Install solid windows for quench tests
Install x-ray windows for data taking

13. Magnet movement modifications
Magnet movement upgrade
100kCHF project money from PH (60:40 design:mechanics)
Magnet movement upgrade (pivot and chariot)
Improvement of pointing accuracy
Strengthen vertical pivot- remove sag dependent on load
Magnet cable support arm ‘potence’
Reroute magnet power cables onto magnet via a new support structure above the centre of rotation
remove any possibility of collision magnet vs cable arm
Remove shifters task of surveillance
Design study well advanced
But progress stopped by LHC overload of TS-MME
40kCHF spent on design
No likelihood in near future to be completed and installed
Must nevertheless complete the study and make the drawings
Insurance in case of future problems in the movement system.
Reserve 20kCHF
Present magnet movement system?
Has foibles but are well understood and reproducible
Pointing accuracy is good enough for telescopes (< 2.7 mm/10m)
Introducing more reference position checking and angle encoder monitoring
Must minimise the extra loading of magnet from Phase II gas system
Remaining 40kCHF
Reserve in case of problems or divert to 3He gas system

14. Magnet movement modifications
Magnet movement upgrade
100kCHF project money from PH (60:40 design:mechanics)
Magnet movement upgrade (pivot and chariot)
Improvement of pointing accuracy
Strengthen vertical pivot- remove sag dependent on load
Magnet cable support arm ‘potence’
Reroute magnet power cables onto magnet via a new support structure above the centre of rotation
remove any possibility of collision magnet vs cable arm
Remove shifters task of surveillance
Design study well advanced
But progress stopped by LHC overload of TS-MME
40kCHF spent on design
No likelihood in near future to be completed and installed
Must nevertheless complete the study and make the drawings
Insurance in case of future problems in the movement system.
Reserve 20kCHF
Present magnet movement system?
Has foibles but are well understood and reproducible
Pointing accuracy is good enough for telescopes (< 2.7 mm/10m)
Introducing more reference position checking and angle encoder monitoring
Must minimise the extra loading of magnet from Phase II gas system
Remaining 40kCHF
Reserve in case of problems or divert to 3He gas system

16. Draft Budget Request 2006 2006 will be a very intensive year for CAST
Program for 2006 (next slide)
Draft operating budget must take into account
Subsistence/support for key personnel, including doctoral student working on final 3He gas system
Fees for external survey team
Maintenance of experiment (phones,rentals,infrastructure, repairs)
Basic running costs ( gas, EPool)
Mechanical support (mechanic for small modifications in SR8, workshops)
Estimate is 149 kCHF

17. 2006 program
Rapid start up after the Xmas to collect a further 15 days data
Shutdown of CAST for >3 weeks for an LHC-dictated infrastructure maintenance stoppage.
Profit to replace a gate valve for later installation of the new Micromegas (MM) line. Then cool down at end of shutdown.
Laser and x-ray alignment of both CCD and (new) MM telescopes.
Data taking between ~ 2.5 and 14 mbar 4He gas filling
~ 140 pressure settings starting late in April 2006 for months.
After completion of the design study and a technical review early in 2006
Order components for the 3He system
Install and commission 4Q06
Autumn shutdown. Warm magnet.
Install modifications inside cryostat (cold pressure probes, cryogenic valves and quench protection check valves and final cold windows for high pressure running).
The CAST experiment will prepare for a full years data taking starting as soon as possible in 2007 in order to cover between 14 and 60 mbar 3He.

18. Schedule to May 06

20. Draft Budget Request 2006
Draft operating budget must take into account
Subsistence/support for key personnel, including doctoral student working on final 3He gas system
Fees for external survey team
Maintenance of experiment (phones,rentals,infrastructure, repairs)
Basic running costs ( gas, EPool)
Mechanical support (mechanic for small modifications in SR8, workshops)
Estimate is 149 kCHF
To fund 2006 running costs
Requires contributions of
3.3 kCHF /PhD (46)
Table 8: Draft operating budget 2006

21. Overall financial situation and future outlook
Operating budget 2005 until
Expect to spend until kCHF
Common Fund Balance kCHF
CAST requires new contributions for the start of 2006
2005 cash contributions already in pipeline kCHF (Saclay,UBC, Zaragoza)
Institutes waiting to order/provide instruments kCHF (Demokritos,MPI, LLNL)
Some remaining 2005 contributions require addendum to MOU
Others need a request for funds from CERN (next week)
2006 expenditure
6 months data taking with present systems starting late April 06
Running costs request ~ 3.2kCHF /PhD
Orders and construction of 3He system
3He project
Interventions on magnet both inside and outside magnet cryostat
Estimate of costs
Estimate of income over 2006 & 2007

22. Table 4A:
Present cost estimate for the 3He Project

23. 3He Project 3He  Free 3He gas system  207kCHF
1m3 covered by LLNL (saving ~500kCHF)
Also LLNL will cover insurance & transport in lieu of running costs contributions 2006 & 2007
3He gas system  207kCHF
Builds on existing 4He instrumentation
Hermetic components
Passive security to limit pressure near cold windows in a quench to 1 bar
(3He pressure 120mbar 1.8K)
3He related upgrades  kCHF
Vacuum system (3He interlocks)
Final cold windows
Electricity upgrade
Support for additional personnel for system operation
Small CAST upgrades
Option  50kCHF
PLC- automation of 3He pressure-step filling system
See following summary
Table 10

24. 3He Project – Cost summary
3He related
115->138
2 years M+O
total cost estimate

25. Estimate of CAST funding 2006 & 2007
The contributions proposed by collaborating institutes
Combining both ‘committed ‘ and ‘highly-likely’ categories
Shown in Table 11 below

26. 3He project Costs vs Funding
Total costs 2006 & 2007 (incl. running costs)
614 kCHF to 687 kCHF
Funding (kCHF) Sum % Min/Max
Committed / 63 %
Highly-likely (to be confirmed ) / 79 %
Possible Greece Phase II contribution / 89 %
CAST can already fund ~ 85%
Collaboration positive to support 3He project
MOU addendum to be prepared for this shortly
Shortfall ~ 100kCHF
Institutes working to apply for funding from new sources to cover shortfall ~ 100kCHF
Contributions
All Institutes strongly encouraged to send remaining 2005 and all 2006

27. Future outlook The 3He project of CAST Beyond 3He  Phase III ?
Enable running to 60 mbar at 1.8K (axion rest mass up to 0.8 eV/c2)
Phase II
Physical limit for 3He
120mbar at 1.8K
Axion rest mass up to 1.16 eV/c2
60  120mbar will require at least one more year (2008+)
3He strongly absorbs X-rays over an average path of 5m in cold bore
CAST sensitivity reduced but vital region to explore either by discrete steeping or pressure ramping
Beyond 3He  Phase III ? H2
H2 running (cold gas cell in at least 1 beam pipe, much better x-ray T%)
Axion mass reach  1.5 eV/c2
Development of gas cell(s) and Si detectors for cell windows (30ºK)
Visible – UV photons