Monday, December 16, 2024, 3:34   Target loaded in test stand. Confirmed correct connection to mass marker power supply through multipin. Bottom left pin (5 PS - ) connected to grounded side of the filament, top right pin (2, PS +) connected to top end of filament.

Tuesday, December 17, 2024, 09:30 Turbo pumps on

Tuesday, December 17, 2024, 16:21  water cooling on. No effect on vacuum. Vacuum stable at 1.18e-6T

Tuesday, December 17, 2024, 16:41   ramping TGHT TBHT at 1A/30s

Wednesday, December 18, 2024, 10:00  slowly increasing BIAS/EE/EZL to 30/2.5/13 kV

Wednesday, December 18, 2024, 11:40   BIAS EE EZL at 30 2.5 13 kV. 1 spark at 28kV, and there was a downward spike in the TGHT current when bias was at 28.5 kV  

Wednesday, December 18, 2024, 11:41   FC0 reading 1.6E-10 A. quite low for total beam, but this is likely due to this target being hot so many times.

Wednesday, December 18, 2024, 11:51 wire scans taken (RPM0)

Wednesday, December 18, 2024, 11:54 FC) extracted for mass scan - mass scan beginning now . Background record appears to be functioning well, although it is high. comparatively to old tests. It could be that those old tests were recording irregularly low background, given the temporary solution that was implemented.

Wednesday, December 18, 2024, 12:13   it seems that a spark took down many optics elements. Going to allow conditioning at 30kV for a while before restarting .     - optics elements down due to pressure sensor TMS:IG6 timing out. Vacuum group notified. Will likely bypass the interlock temporarily if it cannot be fixed fast. This should get a more permanent solution as it has failed a number of times before.

 Wednesday, December 18, 2024, 13:06    sparks are occurring on average approximately once every 10 minutes. they don't seem to be tripping of any supplies or optics (after IG6). but this spark frequency is significantly higher than observed on other targets lately.

Wednesday, December 18, 2024, 13:24   restarting Mass scan with IG6 interlock forced by.   scan name - 2024-12-18_13-47 SISP2N mmOFF.txt

Wednesday, December 18, 2024, 13:51   put FC0 back in, preparing to heat up mass marker.  will plan to ramp to 3A to match previous MM tests.     also, no sparks in the past 40 minutes, it appears they have subsided.    additionally, IG6 has been fixed by vacuum group

 Wednesday, December 18, 2024, 14:15   mass marker power supply is not connecting. When attempting to write to its IP address it times out. Had to drop the HV in order to investigate. Have enlisted controls group to aid as it appears to be connected and should be functional.  

Wednesday, December 18, 2024, 14:30   had to reset the computer connection to the network 192.168.5. by unplugging and plugging in the usb ethernet connection at computer. situation resolved.

Wednesday, December 18, 2024, 14:40   HV back up and now increasing the mass marker current from 0A to 3A, at 0A, FC0 current is 1.4e-10, very close to previously recorded FC0 mm0A value.

Wednesday, December 18, 2024, 14:56 with mm current at 3.0A, requiring 6V, FC0 current is 2.1e-10 A.   

Wednesday, December 18, 2024, 14:58  withdrawing FC0 to take mass scan

Wednesday, December 18, 2024, 15:25   mass scan complete:  filename 2024-12-18 15-23 SISP2N mmON.txt

Wednesday, December 18, 2024, 15:27   further increasing mm current to 4.0A.  FC0 current increasing noticeably. waiting for plateau. FC0 at 6.6e-10A.   wire scans taken

Wednesday, December 18, 2024, 15:39  new mass scan:  2024-12-18 15-53 SISP2N mmON 4A.txt

Wednesday, December 18, 2024, 15:52  mm power supply turned off. 0A.

Wednesday, December 18, 2024, 15:53  rescan of high mass region. still a residual indium mass peak present. will scan again after cooling more.

Wednesday, December 18, 2024, 16:10   mass scan captured that shows the indium peak almost masked in background 

Given that the indium peak for 3A was significantly lower than with a regular SIS source cup, i recommend that this target is heated up with the regular source cup again to compare.

 Wednesday, December 18, 2024, 16:11 dropping HV EE EZL to 0V

Wednesday, December 18, 2024, 16:13 cooling target to 0/0A at 1A/30s