ISOLTRAP continues working on 238U.
In the night the main contaminations on mass 203 and 205 have been determined.
10^5 ions/s 205Fr for 1.7uA p+.
10^3 ions/s 203Tl with and without protons.

/MB /RW /FrW /SK

HT went off - reset, ok again.
/ES

RILIS switching to Au. /ES

ISOLTRAP finished with optimization on mass 238, we are changing to 204 and check the contamination there with protons on target.
/MB /SK

Do not have FC readable yield on mass 204. Go back to U-238. Too much beam without attenuation. Put in WG475.

YCD0.FC90       78pA (5.148 E8 ions/s)
ISOLTRAP MCP5   8.333 E5 ions/s

Efficiency: 0.16%

Without WG475:

YGPS.FC490      1nA
YCD0.FC90       380pA

Continue on U-238 with final tests.

/SK /MB

Surrender beam to Karl (SSP) for diffusion chamber test.
Close valve in C-section.

/SK /KJ

Quick optimisation to online diffusion chamber done, beam from this target can be better focussed than the YO used 2 weeks ago.

Good transmission into the chamber, now waiting on colleagues and samples to make some further tests from next Monday.

Many thanks to ISOLTRAP for the time, giving the beam back to them now.

/KJ

The Windmill@LA1 team is taking advantage of a quick gap in the beam distribution to run on 202Fr.
/ TEC

NORMGPS=>ISOGPS
Prot.current: 1.55uA 2954E10ppp
Total cycles: 14/36
Cycles number: 5 7 9 11 13 15 17 20 23 26 29 32 34 36


202Fr to Windmill@LA1 in fission mode.
/ TEC

Target now at 675A - about 2060 degrees
Line now at 270A - about 2083 degrees

/ES

Windmill team surrenders.
BG back to ISOLTRAP.
SLIT IN.
Request OFF.
ISOLTRAP EqpArray restored.
/ TEC

Au massmarker connected to OVEN1

The Oven can be controlled remotely, however the target and line are in local control only.. This means heating the target can only be done within the HT faraday-cage. Bruce knows how to do it, otherwise call me 16 4585 (Erwin).

After the HT access we informed the PSB to take out the beam stopper and reset BVT101.

And.. don't forget to reset the HT!

/ES/BM

Switched to 197Au, RILIS tuning.

/ES/BM

At LA1 they saw the broad spectrum of all heavy Fr masses again just like before the rtuning from yesterday but today we did not change anything on the separator settings! What is going on? To be investigated with Tim.

(Also the yield of 202Fr dropped by a factor of ~ 50!)

/ES

Problem at LA1 solved. The beam transport needed a slight touch up to go through the 7mm aperture before the detector. Rates of 202Fr in our detectors are back and better than ever!
New tune saved under GPS_LA1_IS534_20120516.csv.
/ TEC & ANA & MK

TISD takes beam for yield measurements on Au isotopes.
Itarget=674 A, Iline=269 A/ JPR, TM

Checking for stable species currents at FC490. On mass 200, strange variations in the current values (see attachment).
A=200, I= 10 pA
No readable currents for A=201-205.

Asking for protons now./ JPR, TM

Checking transmission with 238U (slits in)
FC490 - 1.1nA
FC68 - 0.43nA
Transmission 36%

So far we see very little activity in masses 200, 201, 202 (either gammas or betas). No Au though.
Putting mass 197Au to check with RILIS if the lasers are ok.

RILIS was optimized with 197Au with OVEN1 at 25A, Target = 674A, LINE = 269A: 340pA on FC490 /BM