We have a request for changing over the source to 4He1+ operation from the MWS.

Later... OLIS opened. Canister purged with N2 and pumped via IOS, then valved off and disconnected. ICR has restored a recent 4He1+ tune.

Beam idle overnight, and grew nicely. Source tweaked up and throttled back a little while ago. SCC development expected to continue today.

Beam used into last evening, then idle overnight. Nice and stable. Maintenance Day for the cyclotron and ISAC.

MWS is running nicely. SCC development continues. This is scheduled to end on this coming Tuesday morning. It will likely continue for a couple of days, after which there would be a beam switch to 16O2+ from the MWS for TUDA-II setup.

The 16O3+ DRAGON run just finished. MCIS Development begins this morning for a few days. The goal is to install and characterize the new sputter ion source.

Below are vacuum pics before and after closing MCIS:IV0. There was a bit of a spike during closing. All three turbos switched off. TP3 is down now.

Later... Keerthi requests we look at 16O7+ production as a measure of source performance. Done. Chart appended below, with source panels. Mass scan next.

A new sputter source was installed onto the Supernanogan. A wire of Au is installed in the source. Mass scans this morning with source at equipotential. Source patched to MWS EE supply and biased to ~1kV tunable. That makes a significant improvement in intensity. Beam at FC6 is 197Au24+ presently.

Today's agenda: RF frequency scans and generally getting a feel for the new sputter source.

Mass scan plots in region of 197Au25+ attached below, taken with and without the sputter source on. Matlab post-processed pics to come shortly.

MCIS Development finished Friday evening. OLIS switched to MWS operation and setup began for 4He1+ delivery to DRAGON. Beam handed over to experiment last night.

DRAGON continues to take MWS beam.

Later... 14:00 EOB. Prepare for Mini-Shutdown.

Supernanogan on overnight, in the search for gold. A trace of 197Au34 observed this morning. Development continues.

A/q: 5.7941

FC6: ~500epA

Bias: 10,876V

EL: 4274V

Sputter source bias: 1262V

RF frequency: 13.60175 GHz

RF amplitude: 10dB (~16W FP)

MCIS:IG1: 6.8e-8 Torr

The September Mini-Shutdown is now a memory. The few days available to OLIS were used for MCIS Development on 197Au. Productive. A 197Au34+ beam sat on FC6 overnight. The program ended Friday, at which point a 20Ne1+ beam from the MWS was established, and line tuning commenced.

A 20Ne1+ beam from the MWS was established on Friday. Line tuning began Friday evening. A tune to the front of the SC LINAC was in place by Saturday. Tuning through was delayed by SC tank conditioning.When the LINAC is ready, tuning to TIGRESS will resume, expected today.

Beam from MWS quietly sitting on FC6 awaiting tune checks to TIGRESS. Next experiments up are 26Alg5+ to TUDA and 24Na5+ to TIGRESS. So we are poised for source switchover to provide 24/26Mg pilot beams from the MWS.

Source switchover in progress on WP#2010-10-12-1. Magnesium material installed into MWS. Pumpdown in progress. Leakup rate OK. Turbos on.

Later... Pumping going well. at 1e-6 by ~16:00.

Source conditioning most of today, to 59kV. Striptool attached. Reset to 26Mg tune at ~16:00.

Source is running nicely. Hand-off to ICR occurred ~Wednesday night. Setup done overnight. 26Mg (PE is now on at nominal value) is selected presently; blue trace on Stripchart.

MWS is producing 26Mg, presently parked. It was used over the weekend for TUDA tuning.

MWS operating nicely.

MWS ran fine overnight. It was shut off this morning to investigate bias sparking issue, noted on FR#4894. The two MCIS turbopump controllers are displaying gibberish on their front panels this morning. There was one spark since yesterday, around 19:15 last evening. Due to a failure at ITW - see here and here, a proposal is made to deliver 26Mg to the experiment for data.