March 6, 2020 - PSS Kicker Meeting

Agenda

Proposed requirements for PSS kicker for 200 keV upgrade

With regard to the kicker requirements document (see p.3-4):
The beam will be deflected by the PSS kicker magnet onto the "A2" mask.
The A2 mask has three circular apertures of diameters 4,6,8 mm respectively
The maximum radius of the three apertures is a=4 mm
The proposed distance between the kicker and A2 mask is : ~ 12" ~ 30 cm
The nominal beam energy is 200 keV
Can the present PSS kicker coils be upgraded to satisfy these requirements?

Documents from Jerry

media:Kicker Dimensions mm 20200225.docx - sketch with kicker coils dimension, wire gauge and spool size.

media:Redesign of Kicker.docx - more detailed description of changes to the original spools.

media:Kicker requirements 19950123.pdf - 1995 spec sheet, where 220 turns are mentioned etc.

media:Safety Systems Kicker 20180508.docx - somewhat more detailed description of the system and controls but rather in the draft form.

Description from Jerry

Currently spool is less than 50% filled. Obviously there is more than that needed.
Based on the available documentation, the supply voltage is 12VDC.
Maximum current output of the driver circuit is limited to 200mA.
It is either supplied to single coil during kick or split between bias and kicker coils when not kicked (tripped).
My understanding is that on each spool there are two identical windings with opposite polarization (current flows in opposite direction).
Therefore, when both are powered with the same current (they share 200mA, each receiving 100mA) they cancel each other.
During the kick only one of these windings is powered with all 200mA of current, producing strong magnetic field (kick).