1. MPE main activities planned for LS2
Machine Interlock  J. Uythoven
Electronic for Protection (QPS)
Machine protection Software  J. Uythoven
Performance Evaluation
Electrical Engineering
Giorgio on behalf of MPE Group

2. MPE - MI, EP, MS and PE Sections
For Machine Interlocks system, the upgrade is mainly in the LHC injectors  Jan’s presentation.
Electronic for Protection is in charge of the Quench Protection System (QPS), mainly software and electronics. The major activity is the upgrade of DYPQ racks (MQ yellow racks) and the 11T dipole quench protection system.
Machine Protection software works in close collaboration with BE/CO and other users. No tunnel activities. Software ready in due time, before Hardware Commissioning.  Jan’s presentation.
Performance Evaluation section will request dedicated tests to be performed by ELQA team mostly. Detailed list to be established. 2

3. MPE – EE Section: always present during LS2…
ELQA at cold, then warm beginning of LS2
Diode insulation consolidation
Magnet replacement
LHC Non-Conformities treatment (ELQA)
11 T validation tests
Electrical Engineering systems
ELQA at warm, then cold end of LS2 3

4. Main MPE - EE activities per Sector during LS2
before LS2
Non-conformities diagnostics at cold, with powering.
TP4-E
MIC-C
DOC-C
NCs solving
Warm-up
TP4C: Monitoring system of spool and 13kA circuits
before LS2
TP4-A & B
MIC-W
DOC-W
Warm Bus bar measurement
MPE-EE during LS2
Diode Insulation Consolidation
Magnet replacement: AIV & PAQ.
Diagnostics and Follow-up of NCs.
13 kA Energy extraction system maintenance.
600 EE Energy extraction system maintenance.
Current lead heating system maintenance.
11 T dipole electrical tests and validation
before cool-down
Elqa during cool-down
TP4-C: Monitoring system of spool and 13kA circuits
before powering
DC Cables connection
NCs during powering tests
days
3 weeks
10 days
3 – 4 months
3-4 weeks
2 teams
2 shifts
monitoring
1 team of 3 pers

5. Main MPE - EE activities at cold, before warm-up
Non Conformities diagnostics: 2-3 Sectors in parallel
Lockout, measuring system installation, unlockout, Powering tests (measurement), analysis, and need of repetition?
2-3 Field teams performing the test
Hardware limitation for many // measurements.
Very limited access (ELQA team only).
ELQA campaign at cold: 2 Sectors in parallel, 10 days/sector
Lockout, and then DC Cables disconnection, galvanic insulation installation
ELQA campaign at cold: (low voltage and high voltage test)
Hardware, manpower and coactivity limitation.
ELQA fault to ground monitoring during warm-up: 4 Sectors in parallel
Monitoring system installation at the end of cold campaign, then remote measurements 5

6. Main MPE - EE activities at warm, during LS2
ELQA campaign at warm + BB segment measurement (TBC): 2 Sectors in parallel, 10 days/sector
ELQA campaign at warm: (low voltage and high voltage test), P=6 bar
2-3 Field teams performing the test
Hardware, manpower and coactivity limitation.
Very limited access (ELQA team only), with some local exceptions
Diode Insulation Consolidation: this would include the diode lead measurement and shifted in the day, insulation verification (HV test, like PAQ during LS1).
3-4 Field teams performing the test
Local low voltage test with coactivity.
Global insulation verification without coactivity and very limited access (ELQA team only, DFBA to DFBA). 6

7. Main MPE - EE activities at warm, during LS2
ELQA campaign at warm + BB segment measurement (TBC): 2 Sectors in parallel, 10 days/sector
ELQA campaign at warm: (low voltage and high voltage test), P=6 bar
2-3 Field teams performing the test
Hardware, manpower and coactivity limitation.
Very limited access (ELQA team only), with some local exceptions
Magnet replacement: AIV & PAQ: many sectors in parallel
Local tests: (low voltage and high voltage test)
About 20 magnets to be replaced (TBC).
During the tests, very limited access (ELQA team only).
13 kA Energy extraction system maintenance: B. Panev and support of Russian team
Regular maintenance on 13kA Energy extraction switches: partial upgrade of the interface electronics, high voltage tests after the maintenance.
Individual system tests and Powering tests at the end of LS2 to validate the functionality with few extractions at different current level. 7

8. Main MPE - EE activities at warm, during LS2
600 A Energy extraction system maintenance: G-J Coelingh and S. Pemberton with support of Russian team
Preventive maintenance on 600 A Energy extraction switches.
Individual system tests and Powering tests at the end of LS2 to validate the functionality of the system.
Current lead heating system maintenance: G. Seweryn and G. D’Angelo
Preventive maintenance on current lead heating system control crate.
2-3 Field teams performing the maintenance
No coactivity limitation. Access to UA’s and RR’s needed.
Functional verification of the system.
11 T dipole electrical tests and validation: G. D’Angelo and ELQA team
Electrical test during the 11T dipole installation.
Electrical integration verification
Coactivity limitation during high voltage tests.
Part of the ELQA tests. 8

9. Main MPE - EE activities, during LS2
warm, before cool-down (TP4 A&B) + BB segment measurement (TBC): 2 Sectors in parallel, 10 days/sector
similar to warm, after warm-up.
ELQA during cool down, (TP4-C):
similar to ELQA during warm-up
cold (1.9K) end of LS2, before powering (TP4-E): 2 Sectors in parallel, 10 days/sector
similar to cold (1.9K) before warm-up
Preparation for powering (DQHDS + DC cables connection)

10. Manpower, Hardware and Logistics…
CERN staff + Project Associated personnel (more than 40 pers.).
Electrical and standard bicycles
12 Pefras (RTL trolley to pull and power TP4 systems)
Several cars allocated to Project Associated + TE/MPE car pool

11. Thank you for your attention!