Hi Nick and BLASTies
On my home computer, I have difficulty to view your PostScript files you
sent on the asymmetry measurements this morning. It complains and does
not run. I spend an hour to download newer version of GSview that seems
to need license. Can you or SOMEONE else send PDF version of these
files so I can view them before Monday. I suggest if people sending
postcript files, if they can also include a PDF or JPG versions as well.
I have attached the files.
Thanks.
Manouchehr
Nikolas Meitanis wrote:
>
> The beam worked withoud any problems.
> Continued data taking. Hydrogen at 2-state flipping, Cell at around 90K.
> The ABS Target screen for BLAST on dblast14 reads the wrong epics channel
> for the cell temperature. According to the ABS display on dblast12 the
> channel should be: ABS:TH:KRDG:5.VAL .
>
> Took runs 709, 711, 712, 713, 714, 715, 716, 717, 718, 720
> The lrn.C , flrn.C and charge.C worked. Crunched runs 705, 706, 707, 708,
> 709, 711, 712, 713, 714, 715, 716, 717, 718, 720. Didnt notice the problem
> reported by the previous shift.
> Compton polarimeter runs were matched to coda runs. The polarimeter runs
> were paused during the injection to prevent the tripping the previous
> shift mentioned.
>
> No Blast power supply problems.
>
> The L2 and R2 crates tripped twice each until 4:50am.
> At around 4:50am the L2 crate tripped for the second time and would not
> come back on when reset on the control screen. I had to reboot it in the
> Dtunnel which solved the problem. I also had to reboot the epics crate
> because the controls screen was stuck in a "Restoring in progress" mode
> (instead of STBY or OPER).
> R2 continued tripping but it was no match for L2 which tripped a whopping
> 12 times during the night. Reset on the control screen worked fine. It is
> also pretty quick so down time is limited.
>
> In the ten minutes after I wrote the last sentence, L2 crashed an
> additional 4 times, so let me rephrase what I said: L2 crashed a lot, it
> favors back to back trips and it disrupts data taking significantly, not
> to say that it endangers the already stretched-to-the-edge sanity of the
> shift crew with all sorts of ultra-annoying alarm messages.
>
> Asymmetry plots of the 13 runs I crunched are shown in the attachment for
> your browsing pleasure.
>
> ------------------------------------------------------------------------
> Name: c1_n3.ps
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> Encoding: BASE64
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>
> Name: c1.ps
> c1.ps Type: Postscript Document (APPLICATION/postscript)
> Encoding: BASE64
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--____________________________________________________________________ Manouchehr Farkhondeh manouch@mit.edu Principal Research Scientist Division Head of Physics, Accelerator MIT, Bates Linear Accelerator Center tel (617)253-9298 Middleton, MA 01949 fax (617) 253-9599 ____________________________________________________________________
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