Transcript LIU_IONS_Linac3_meeting_28_10_2015 - Indico

LIU-Ions Power Converters for Linac3
Status of the pulsed converters upgrade for
Linac3 100ms operation
Jean-Marc CRAVERO – TE-EPC
12 April 2016
JMC
LIU-Ions Power Converters for Linac3
Requirements for 100ms operation: pulsed quadrupoles
•
The limitation for 100ms operation is the charging capability of the capacitor charger: the
capacitor bank has to be charged from 350V to 600V (worst case) in ~80ms to allow
100ms repetition rate.
Measurement of the existing chargers operation
with quadrupole type 9 and Iref=320A
200V
110ms
CH1: capacitor bank voltage (100V/div.)
CH2: capacitor bank charging current (2A/div.)
•
The installed capacitor chargers have a charging power of 1kJ/s with Vout=1000V and
have to be replaced by units with 1.5kJ/s charging power.
12 April 2016
JMC
LIU-Ions Power Converters for Linac3
•
A commercial unit is available on the market with characteristics (charging power,
mechanical dimensions, control interface, etc…) fulfilling our request.
•
A Price Enquiry has been released and the order has been placed in May 2015 for the units
that were targeted.
•
In July, the supplier (TDK USA) has provided a similar unit (same mechanical dimensions)
to allow the studies for the integration in the power crate.
•
A MAXIDISCAP prototype converter has been modified to embed the new capacitor
chargers (modification of the capacitor bank layout, auxiliary power supply, front panel,
etc..).
capacitor charger (1kJ/s)
12 April 2016
capacitor charger (1.5kJ/s)
JMC
LIU-Ions Power Converters for Linac3
•
The documentation for converter modification has been finalized by DEM (drawing office)
and production files released (EDA-03294–V1 “MAXIDISCAP 10Hz”).
•
The mechanical and electrical parts needed for power crates modification are currently
being ordered.
12 April 2016
JMC
LIU-Ions Power Converters for Linac3
•
In September 2015, the 12 capacitor chargers units from TDK have been delivered at
CERN.
•
Tests have been performed to validate the electrical performances and the control
interface with the existing MIL-1553 electronic crate. Results are ok with some margins.
Output voltage
250V
68ms
Output current
•
A MAXIDISCAP power converter equipped with a 1.5kJ/s charger unit has been operated at
10Hz during one week without any problem.
12 April 2016
JMC
LIU-Ions Power Converters for Linac3
Conversion to 100ms operation of the pulsed quadrupoles
during 2015-2016 YETS
• the modification of the pulsed quadrupoles for 100ms operation is progressing as
expected.
Conversion to 100ms operation of the pulsed dipoles during
2015-2016 YETS
•
Only some modifications of electronic boards are required, it can be performed in 1
week.
12 April 2016
JMC
LIU-Ions Power Converters for Linac3
Planning for conversion to 100ms operation
Q1-2015
Q2-2015
Q3-2015
Q4-2015
Q1-2016
Q2-2016
1. Quadrupole magnets converters : 1.5kJ/s capactor charger purchase
# price Enquiry
# production
# reception and acceptance tests
# delivery at CERN
2. Quadrupole magnets converters : 1.5kJ/s capacitor charger installation
# installation in the power converters
# commissioning
3. Steerer magnets converters modification for 10Hz
# modification of the power converters
# commissioning
4. Quadrupoles magnet converters : upgrade to FGC3 control
# electronic crates production
# electronic crates installation
# power crates components purchase
# power crate upgrade/replacement in Linac3
# commissioning
•
Upgrade of the pulsed quadrupoles electronic crates to FGC3 control will be implemented
later… (LS2 ?)
12 April 2016
JMC