Power Converter Characteristics Design & Operation Responsibles Power Converter Architecture Power Part Control Part

Magnet Protection Magnet Connection Magnet Types Machine Installation Production Contract & Contact History

Power Converter Characteristics

Operation Responsibles

1st Intervention	Piquet SY-EPC Experimental Areas(163668)
Responsibles:	Yves GAILLARD
	Xavier GENILLON

Power Converter Architecture

MNP33 magnet is located on K12 beam line in ECN3 underground zone.

This magnet is composed of 2 coils:

• NR31-07 associated with ND31-01 supplies the new coil.

• NR22/56, NR22/57 and ND21-60 mounted in serie supplies the old coil.

MNP33 power converter architecture

Power Part

MNP33 magnet is supplied by standard R31, D31, R22 and D21 power converters.

Control & Regulation Part

CESAR Software (CESAR GUI will not work with Java higher than 1.6.0_18) is used to control MNP33 power converters.

A special CESAR GUI called "MNP33 control" allows a SET CURRENT on both NR22-56 and NR31-07. The program takes care of sending the required value on the NR22-056 and send double the value requested on the NR31-07.

MNP33 CESAR Graphical User Interface

The regulation part is standard.

Magnet Protection

The red buttons on each coil and the equipment stops ("potelets" installed around the magnet) are wired in series to trip the two converters in case of action on one of them.

Magnet connection

NR22-56 and NR22-57 DC cabling

NR31-07 DC cabling

Magnet Types

• New coil (NR31-07) + DC cables: R= 0.19 ohm

• Old coil (NR22-56) + DC cables: R= 0.484 ohm

Machine Installation

MNP33 power converters are installed in North area:

• 891 (BA82): 3

Production Contract & Contract History

• Manufacturer NR31-07 + ND31-01: SIEMENS
• Manufacturer NR22-56 + NR22-57 + ND21-60: BBC
• Production year: 1976