MCIS finished xenon development. MCIS is off and isolation valve is shut.
A new oxygen gas line is installed to microwave ion source via a hand valve neat PE.
Hand valve is tuned as a small leak so that the plasma can run with all other gas valves are shut.
However if one need to start the source Ne gas valves are needed to be opened.
A 3.13nA of 16O+2 is sitting at FC6 and ready to use as pilot beam.

During the last week we delivered 18O+2 from microwave ion source to Ritu.

Over the week end changed to 40Ar+2.

Ritu informed us 18OH2 is coming with 40Ar+2.

Moving the slits ops managed to reduce 18H2 contaminant from the beam.

Good lesson for the future. Bad combination one after the other.

IRIS beam delivery is completed with extra 3 days of beam providing to them.

18O2 and 40Ar+2 were delivered with few attenuators i place.

Controls group may need some assistance from OLIS group in order to trouble shoot the problem.

IOS mass scan does not work.

A/Q            FC6                X          Y          CCB1

1                2.07e-7        167      97       500

2                2.18e-7         308     247

2.14          1e-11             388     277 

2.246       2.07e-8         358     227

2.30          2e-9             378      227 

2.366       1.28e-8         388     277

2.392        2.1e-11        388     277

2.4641      1.98e-11     388     277

2.5345      6.49e-11     398     277

2.5614     1.81e-10      398    227

2.6263     2.95e-7         398   227

2.7522     2.07e-8         398   227

2.7896     2.06e-10       398   227

2.8652     3.22e-11       398   227

2.9515     8.52e-8         398   237

IOS mass scan if faulty. These is a manual scan from mass 3 to 4

Const22 = 0.04187  adjusted to mass = 4

A/q               FC6           X          Y 

3.0075        8.14e-8      398  237

3.1222        4.93e-10   398  237

3.2064        6.24e-7     398   237

3.2613        1.05e-9     408   237

3.3395        2.29e-10   408  237

3.4072        5.6e-10     408  237

3.5089        3.36e-8     408  237

3.5600        1.4e-10     408  237

3.6069        1.86-9       408  237

3.6436        8.46e-10  408  237

3.7514        4.02e-10  418   237

3.8387        4.37e-9    418   237

3.8883        3.43e-10  418   237

3.9416        1e-10       418    237

4                   1.1e-6     418    237       500  

A/Q            FC6

4                1.1e-6

4.25          8e-10

4.34          1.2e-9

4.42          5.5e-9

4.51          2.59e-9

4.58          1.7e-10

4.66          1.7e-10

4.74          1.7e-10

4.85          4.6e-10

5.0            1.36e-10

5.07          1.5e-10

5.13         2.69e-10

5.25         4.89e-10

5.33         9e-7

5.39        3.0e-10

5.56        3.3e-10

5.67        1.12e-9

5.7          5e-9

5.83       4e-10

5.92       2e-10

6.000     1.85e-7

A/q           FC6  (only current over 100pA)

6.0           1.85e-7

6.15         4.96e-10

6.23         2.4e-10

6.31         6.14e-10

6.39         2e-10

6.51         1.82e-9

6.90         2.7e-10

7.00         5e-8

7.1           4.6e-9

7.27        1e-10

7.5        3.32e-10

Supernanogan is running with oven no heat, without 76selenium. MCIS:IG1=3e-7Torr.

Tune saved as 141101_1318_76Se+11tune.snap

MCIS steering  X=330, Y=226, CCB1=500, MCISEL=4171/5157, PE=11.5/23, FC6=76nA(16O+7)

141125_1159_OLIS_76Se+13.snap is saved in reference directory.

El=3480/4303V

MCIS:YCB1=110

MCIS:XCB1=190

MCIS:CCB1=300

Frequency = 14.44765GHz

Amplitude = -10.880

TET FP= 9.8W

TWT RP = 1.8W

20Ne+2 beam optics saved as 150914_1117_ios0iosfc6.snap

Elog is now functioning. We can start entering notes

Chris confirmed the first SIS beam would be Na+1. Next Rb+1 and then Li+1

MCIS TP1 is not running well. Needs investigation as soon as S1219 is completed.

Later... TP1 failed completely, and we are running without it. Starting late Saturday night, DRAGON began to observe a certain instability. We correlated it to MCIS:COL0, which skims total current continuously. It is pretty evident that the source is now toggling between two adjacent plasma modes, due to the somewhat higher vacuum at MCIS. Vacuum was something in the 7-8e-8 Torr range before, but has settled out at some 1.25e-7 Torr now. General consensus is to continue running like this, as it is a minor effect, as you can see below (blue trace). DMG

090915_1915ILTEMIT.txt = 17O +3,  4.4uA new tune, scanner offset +10V,  scanner scale 100nA , 100x50 matrix

090915_1929ILTEMIT.txt = same as above with 200x100 matrix

090915_1949ILTEMIT.txt = after tune tweaking (not optimal; for reference only)

0.4nA of 17O+8 is sitting on FC6. Development will continue tomorrow.

090916_1156ILTEMIT.txt      17O+3  good settings 50x100 ,   333nA Scale, ~4uA

090916_1206ILTEMIT.txt      17O+3  good settings 100x200 ,   333nA Scale, ~4uA

090916_1215ILTEMIT.txt    EL increased, ~4.5uA, emittance increases, 50x100   17O+3

090916_1222ILTEMIT.txt  Changed the MCIS steering to center the beam in the EL. 17O+3 ~5uA, 50x100

090916_1242ILTEMIT.txt  17O+5 has two peaks.

090916_1355ILTEMIT.txt  Repeat same measurement an hour later. (IOS bias was off in-between due to IOC/PLC reboots.)