SPS Injection

bulletWhenever the MKP kicker is not pulsing, then the MDSH.119 must be pulsing to correctly dump the injected beam on the TBSJ (injection dump). The link to the MDSH is through the MKP interlock system.
bullet Document on LHC settings for injection.
bulletThe kicker settings :
bulletFT/14 GeV : 3 generators, 49.2 kV
bulletLHC/26 GeV : 4 generarors, 48.4 kV
bulletThe settings for the MDSH are :
bullet14 GeV : 2.08 mrad
bullet26 GeV : 4.4 mrad
bulletDumped beam positions : on the screen (1199) the beam should be in the center with the MDSH on, i.e. when the kicker is on STANDBY or OFF (power - not timing !). Note that the screen is inverted, the ring is on the right !
Beam/Energy

Position on screen

MDSH OFF

Position on screen

MDSH ON

Position on TBSJ

MDSH ON

FT/14 GeV
-81.7 mm
-99.4 mm
-105.5 mm
LHC/26 GeV
-60.5 mm
-97.8 mm
-105.5 mm
bulletMKP timing: for LHC beams (26 GeV) it is important to position the beam close to the rising edge since not all of the TMRs have the same length (some have only 4 microsecs).

Normal FT injection

MKP OFF - MDSH OFF

MKP OFF - MDSH ON

 

Screen references (May 2008)

 

bulletBTV1186: beam position for LHC beams (26 GeV) .

bulletBTV1197: beam position for LHC beams (26 GeV) . First screen with injection kicker on, second with kicker on standby (MDSH on), third with the kicker on 'timing off' (MDSH off).

bullet

BTV1199: beam position for LHC beams (26 GeV) with kicker on standby (MDSH on). When the kicker is  'timing off' (MDSH off), the beam spot is not visible.