i

#1930 baseline transfer Higaki A = 3.5, HigakiB = 5.5 V 

Increasing Higaki B to see if the 2nd peak reduces 
#1931 HigakiB = 6.0 V  

MCP inserted to identify location of annihilation peaks 

#1932 MCP in beamline 

The peak we are trying to reduce is certainly after the MCP (so likely the entrance to the Cusp trap electrodes) 

#1933 HigakiB = 8.0 V 

This made matters worse, we suspect maybe it over focuses the pbars into the cusp

#1934 HigakiB = 7.0 V 

Seems the annihilation point has moved further upstream on the Cusp trap

Now we try below 5.0 V the inital conditions in #1930 

#1935 HigakiB = 5.0 V 

#1936 HigakiB = 4.0 V 

#1937 HigakiB = 3.0V 

Seems like Higaki B isn't improving 

revert to HigakiB = 5.5 inc Higaki A from 3.5 to 4.5V 

#1938 HigakiA = 4.5 V 

#1939 Higaki A = 4.5 V, Higaki B = 4.5 V

#1940 Higaki A = 4.5, Higaki B = 6.5 V 

#1941 Higaki A = 4.5, Higaki B = 7.5 V 

#1942 Higaki A = 5.5, Higaki B = 6.5 V 

#1943 Higaki A = 5.5 V, Higaki B = 7.5 V 

#1944 Higaki A = 5.5 V, Higaki B = 5.5 V 

Looks like we now hit all of the chambers as the beam passes from MUSASHI to the Cusp ? 

#1945 Higaki A = 2.5, Higaki B = 5.5 V 

#1946 Higaki A = 2.5 V, Higaki B 4.5 V 

Suspicion now that the peak we can't ever seem to change is the microwave blocking grid...
--Suspicious it is a large ammount of annihilation for a 98% transmission grid (well it's not Dan san it's 79%)... 

#1947 Higaki A = 2.5 V, Higaki B = 6.5 V 

#1948 Higaki A = 2.5, Higaki B = 7.5 V 

#1949 Higaki A 3.5, Higaki B 5.5. Float potential (pbar energy) 50eV 

Dan san wanted to see what happened when you change the transfer energy... 

Transfer to cusp GV 

#1950 Higaki A 3.5, Higaki B = 5.5 V GV closed  

Set float to 150V --> higher energy transfer (some would say too high for the Cusp amplifiers but I guess it's just a quick test)  

#1951 Higaki A = 3.5V, Higaki B = 5.5 V 

Open Cusp entrance GV with 150 eV transfer energy (which someone did say was too high energy for the cusp amps) 

#1952 Higaki A = 3.5, Higaki B = 5.5 

Trying to identify the features  

Higher energy is easier...