 Sat Jun 12 10:20:14 2010, Damien Gallop, , , 15N4+ to TIGRESS done 13x
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Delivery to TIGRESS ended this morning as scheduled. ICR took nice emittance
scans and is completing a target snapshot now. Canister still at -22"Hg and MCIS at 7.3e-8 Torr.
Chance to snap some wirescans. Attached. |
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Fri Jun 11 09:21:24 2010, Damien Gallop, , , 15N4+ to TIGRESS
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Delivery of 15N4+ to TIGRESS continues. Source gas canister is still at ~-22"Hg, and MCIS pressure is 7.2e-8 Torr. ICR reported intensity drops
a couple of times this morning. The attached Stripchart suggests beam from the source is down to about a third from status quo. We will look into it now. |
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Thu Jun 10 09:17:42 2010, Damien Gallop, , , 15N4+ to TIGRESS
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Delivery to TIGRESS began yesterday
or so. ICR reported beam intensity drops overnight. I'll look at it presently. Meanwhile, canister pressure is still ~-22"Hg and MCIS pressure is
7.09e-8 Torr. |
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Wed Jun 9 10:07:33 2010, Damien Gallop, , , 15N4+ to TIGRESS
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Setup into ISAC-II began last night. Tuning is in progress now. Beam on FC6 overnight. Canister pressure is -22"Hg and MCIS pressure=7.1e-8 Torr.
Pressure showed correlation with temperature. It is overcast today and cool, suggesting a fairly flat response today. |
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Tue Jun 8 09:27:54 2010, Damien Gallop, , , 15N4+ to TIGRESS
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User tuning began Sunday night. Beam physics expert chose to retire the IOS:Q1 defeat, as he did not know until yesterday that it existed. He discovered
it after attempting to retune yesterday around noon from scratch and making a mess, notwithstanding Keerthi's clear instruction to leave
it alone. He also does not know that Rick developed a tune for this, which provides cleaner transmission than the "book" tune. Pity. Presently |
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Mon Jun 7 10:36:14 2010, Damien Gallop, , , 15N setup over the weekend
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Keerthi set up the Supernanogan for 15N operation and destined for TIGRESS, using two source gas options: a miniature bottle of enriched 15N2 and a canister
with a charge of research-grade 14N2. The canister is similar to the one we used for the 33S run to DRAGON, which finished Saturday morning. Canister is
at -22"Hg and MCIS at 7.27e-8 Torr. A couple of beam stability tests were conducted at 15N4+ and 15N6+. Bob can choose which one he prefers to use. |
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Fri Jun 4 09:30:48 2010, Damien Gallop, , , 33S to DRAGON
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Delivery of 33S6+ continues to DRAGON for the final day. Some online tuning of the line overnight. Source gas canister pressure remains at ~-20"Hg,
and MCIS pressure is at 7.1e-8 Torr. |
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Thu Jun 3 09:29:11 2010, Damien Gallop, , , 33S to DRAGON
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33S6+ delivery to DRAGON continues until Saturday morning. All the signs are that beam is excellent. Source gas canister is still at ~-20"Hg, and
MCIS vacuum is at 7.0e-8 Torr. |
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Wed Jun 2 09:19:04 2010, Damien Gallop, , , 33S to DRAGON
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33S6+ delivery to DRAGON continues. It is Maintenance Day for everybody else today. Source gas canister pressure = -20"Hg. MCIS pressure = 7.7e-8
Torr. |
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Tue Jun 1 09:12:39 2010, Damien Gallop, , , 33S to DRAGON
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| 33S6+ delivery to DRAGON continues. Looks like there was an RF tweak overnight. Source gas canister still at ~-20"Hg. MCIS vacuum at 7.4e-8 Torr. |
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Mon May 31 09:18:39 2010, Damien Gallop, , , 33S to DRAGON
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Delivery of 33S6+ to DRAGON continues. A couple of RF tweaks done over the weekend. Source gas canister pressure at -20"Hg. MCIS pressure at 7.3e-8
Torr. At this rate, we could deliver 33S until approximately forever. |
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Fri May 28 11:02:59 2010, Damien Gallop, , , 33S to DRAGON
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| Beam tuning in progress. Source gas canister at -20"Hg. MCIS pressure at 7.62e-8 Torr. |
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Thu May 27 09:11:10 2010, Damien Gallop, , , 33S Development and Handover
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33S on FC6 overnight. Preparing to send beam to DRAGON
now, and confirm isotope.
Source gas pressure gauge on canister = -20"Hg. MCIS pressure = 7.8e-8 Torr. |
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Wed May 26 18:16:10 2010, Damien Gallop, , , 33S Development
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| Some 3enA of beam on FC6 presently. Let it sit. |
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Tue May 25 22:02:41 2010, Keerthi Jayamanna, , , 33S spectrum
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| 33S spectrum is saved as 33S_spectrum.dat |
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Tue May 25 11:58:02 2010, Keerthi Jayamanna, , , 33S dev
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after 24 hours background spectrum saved as "BackgroungNo33S003.dat"
RF Amplitude :7.767 , RFoutput power= 5W, Output power (dB)=36.4 |
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Tue May 25 11:28:00 2010, Keerthi Jayamanna, , , 33D dev
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after 24 hours background spectrum saved as "BackgroungNo33S002.dat"
RF Amplitude :1.553 , RFoutput power= 0, Output power (dB)=0 |
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Tue May 25 00:19:18 2010, Keerthi Jayamanna, , , 33S
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Finally got something going. YCB1 short to the ground. YCB common plate connected to YCB1 power supply. We were lucky.
Polarity was right. Ran the source with no 33S.
Saved file as “backgroundNo33S.dat” No optics set yet. |
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Mon May 24 22:42:51 2010, Keerthi Jayamanna, , , 33S development
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Tried to see the background before 33S installation. Found few problems: MCIS:YCB1 does not hold more than
58V.
Very difficult to transport the beam without YCB1. Need to find a solution. Open and fix it is not |
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Wed May 19 09:55:51 2010, Damien Gallop, , , 20Ne1+ at 40.8keV for TIGRESS
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| ISAC-I tuning done yesterday. TBC today into ISAC-II. Beam very nice overnight. |