1. MICE Hall Summer Workplan
Colin Whyte

2. Overview Liquid H2 installation Magnet recommissioning
Operation with neon
Mechanical
Safety approval
Operation with Hydrogen
Monitoring/manpower
Magnet recommissioning
US team visit
Run-up to data-taking
Tracker
DAQ
Controls – Alarm Handler

3. Liquid Neon testing It works – with Neon.
Experts are learning their system
Gas system from bottle to roof proved.
Detail changes to control sequences required
External monitoring is required.
Cooling performance for 24/27K operation is good.
H2 system is leak tight
Leaks to H2 safety volume are important
Cryo pumping can hide leaks when absorber is cold
Leak found on Neon vent line – will not he used in H2 system.

4. Package Managers Meeting 001
13th January 2014
Current Status
Modifications to Turret:- completed
Bypass pipe plus thermal link to radiation shield.
Thermal links between radiation shield and support rods.
Thermal link to H2 return pipe removed.
Remove pre-cool pipes and cap.
Re-position pressure gauge pipe and cap end.
No changes to heaters
Improve/re-establish instrumentation heat sinking.
Correct connector pins
Repair broken wire
Tighten connector nuts – lock to prevent rotation.

5. Turret internal bypass

6. Turret modifications.

7. H2 Mechanical Current status FC off-line Installing new turret.
New Y piece part procured, in fabrication.
Leak checking to follow.
Next steps
FC back on line.
Re-instate ‘old’ quench line or new line.
Neon testing 1st week July with new software.

8. H2 mechanical Slightly longer term New vacuum/quench line fabrication.
Internal to hall
New 150mm ID line
Transition to 2 x 100mm lines.
External to hall
Pipework to H2 shed
Lift plates

9. Package Managers Meeting 001
Quench/vacuum piping
Package Managers Meeting 001
13th January 2014

10. Quench/vacuum piping

11. Bellows – plus lockout

12. H2 vacuum/quench lines

13. Liquid Hydrogen – vent valve
Package Managers Meeting 001
13th January 2014
Liquid Hydrogen – vent valve
2 off in parallel in H2 ‘shed’ on MICE hall roof.
Aluminium ‘lift plate’
Trapped o-ring
No metal to metal contact
Tufnol retainer/guide rods
Requires earth strap.
Maintains 100mm clear diameter.
To be tested and approved by ISIS oversight for re-seat
(essential to avoid air ingress post quench leading to possible explosion risk)

14. Safety Approval All mechanical work complete
Neon test with new hardware and software complete
Safety tour by ISIS
Feedback and possible remediation
Final approval.
Then liquid H2 running.

15. LH2 monitoring
New monitoring system required to allow experts access to monitoring information from home.
Shifters provide majority of cover – experts ‘on-call’
Linux ‘box’ with 2 network cards to ‘isolate’
Linux box runs gateway allowing download of PVs for export to EPICS but no command access.
PVs archived and accessible as other MICE systems – also used in alarm handler.
PLC further isolated by FINS settings restricting commands to single non-networked PC in locked H2 control room.
ISIS says yes.

16. Liquid H2 Plan

17. Trackers All cryos curently warm (320K)
2 pumpsets, 1 each upstream and downstream trackers, long KF40 lines.
Pump-purge to remove water – theory is plastic part of connector has absorbed water – prolonged period of pumping required to remove.
Initially used dry turbo rigs, but leaks too large, require ‘decent’ scroll pumps- in procurement.
Cooldown and recalibration required – A Bross to support.

18. SS magnets Have not been energised since Feb 2017
DL to test power supplies this week.
Re-commissioning of QPS system
Test magnets to operating current.
Possible re-test of cold absorber FC quench with SSU to fully validate absorber.
A Bross, S Feher FNAL August 4th to 18th.
DL remote support

19. Expert led run-up Plan pre-run shakedown Early September
Ed Overton replacement(s) DAQ/Tracker
David Adey ??
No beam – fake triggers.

20. Finance

21. Risk Register