Suggestion Directive from Magnet Systems Group for how to name ILC magnet types Cherrill Spencer, ILC 2 nd May 2006

Cherrill Spencer,SLAC Magnet Types Engineering Names 2 How to generate a magnet type engineering name, page 1/4  Purposes of a magnet engineering name: To allow us to TALK about types of magnets To allow us to quickly sort on magnet types in a spreadsheet To facilitate the engineer seeing if magnet types in different ILC areas might be merged into one type The engineering name is NOT supposed to tell you lots of engineering info, go to other documents for detailed specifications.  Use the physical dimensions of a magnet to generate its engineering name.  Units of the dimensions will be mm. No numbers after the decimal point.  Use one or two letters to designate the number of poles in the magnet. Letters always placed a beginning of the magnet name D for dipoles Q for quadrupoles SX for sextupoles SL for solenoids EO for octupoles  Letter L is used to designate the start of the core length value

2nd May 2006Cherrill Spencer,SLAC Magnet Types Engineering Names 3 How to generate a magnet type engineering name, page 2/4  For a dipole rule is DfullgapLcore length Full gap and core length in mm with zero decimals e.g. D30L3000 is a dipole with a 30mm full gap and core length of 3 m NOTE we use steel length value NOT effective length in the magnet name Could have several dipole types that have 30mm gap and 3m core length, but quite different coils and so different nominal integrated strength. To distinguish between these dipoles we add a V1 or V2 after the core length. E.g. D30L300V1 and D30L300V2 are two different dipole types. One would have to look at a spec sheet or drawings to know their other specifications. If only one version do NOT put a V1.

2nd May 2006Cherrill Spencer,SLAC Magnet Types Engineering Names 4 How to generate a magnet type engineering name, page 3/4  For a quadrupole rule is Qdiameter of boreLcore length Diameter of physical bore (=inscribed circle) and core length with zero decimals e.g. Q41L200 is a quadrupole with a 41mm diameter and core length of 200 cm. NOTE we use steel length NOT effective length Could have several quad types that have 40.5mm or 41 mm diameters and 2m core length, but quite different coils and so different nominal integrated strength. To distinguish between these quadrupoles we add a V1 or V2 after the core length. E.g. Q41L200V1 and Q41L200V2 are two different quad types. One would have to look at a spec sheet or drawings to know their other specifications.  For a sextupole or octupole rule is SXdiameter of boreLcore length or EOdiameter of boreLcore length Diameter of bore (=inscribed circle) and core length in mm with zero decimals e.g. SX50L1000 is a sextupole with a 50mm diameter and core length of 1000mm NOTE we use steel length NOT effective length Could have several octupole types that have 35mm diameter and 500mm core length, but quite different coils and so different nominal integrated strength. To distinguish between these octupoles we add a V1 or V2 after the core length. E.g. EO35L500V1 and EO35.0L500V2 are two different octupole types. One would have to look at a spec sheet or drawings to know their other specifications

2nd May 2006Cherrill Spencer,SLAC Magnet Types Engineering Names 5 How to generate a magnet type engineering name, page 4/4  For a solenoid rule is SLinnerdiameterLcoil length Inner Diameter of solenoid (diameter of clear space) and overall COIL length with zero decimals. We use COIL length because not all solenoids will have a steel case. This is OVERALL coil length, it may be made up of 4 pancake coils but it is the overall coil length we will use. e.g. SL203L756 is a solenoid with a 203mm inner diameter and COIL length of 756mm. Could have several solenoid types that have 203.2mm inner diameter and 756 coil length, but quite different coils and so different nominal field strength. To distinguish between these solenoids we add a V1 or V2 after the coil length. E.g. SL203L756V1 and SL203L756V2 are two different solenoid types. One would have to look at a spec sheet or drawings to know their other specifications.  For a SUPERCONDUCTING magnet without steel poletips use the inside diameter between of the main superconducting coil windings and, if there is a steel core, use its length, otherwise use the length of the main coil windings. E.g. a superconducting “cos2theta” dipole with 80mm inner diameter and 3 m long outer steel cylinder will be called D80L3000. One would have to look at a spec sheet or drawings to know it is a superconducting dipole.