[Brahms-l] Fw: SPY news: No time meeting next week ... BtA foil ... Bunch merging success

FYI

----- Original Message ----- 
From: "Kin Yip" <kinyip@bnl.gov>
To: <undisclosed-recipients:>
Sent: Friday, November 07, 2003 2:24 PM
Subject: SPY news: No time meeting next week ... BtA foil ... Bunch merging
success


> ====== Scheduling Physicist - YIP (ie. SPY) news channel ========
>
> Hello,
>
>
> (1) There will be NO Time meeting on the coming Tuesday
>     (Nov. 11, 2003). The next Time meeting will be on
>     Nov. 18, 2003.
>
>
> (2) Initial bunch merging success in Booster :
>
>  Yesterday (Nov. 6) evening, M. Brennan reported some success of
>     (a) merging 6 bunches into 3 and
>     (b) squeezing 3 bunches into half the Booster ring
>  so that this is short enough for injection into 1/8 of the AGS
>  -- the planned bunch merging scheme.
>
> Successful bunch merging may give us a factor of two increase
> in the intensity.
>
>
> (3) BtA (Booster-to-AGS) foil device and baking with Booster beam on:
>
> It's a wrong screw (too long !) sticking out of a foil which has
> prevented the foil device from rotating a full circle (360 degrees).
> This is still not as "funny" as a small beer can (Heinekan?)
> preventing e-/e+ from circulating the LEP (Large Electron Positron
> Collider) of 27 km in circumference at CERN, Switzerland
> when I was still a graduate student there several years ago.
>
> One of the "GOOD" things that comes out of the BtA access is that,
> due to time constraint, the vacuum group has for the first time
> tried baking in the BtA line when the Booster is having beam.
> They have never done this before because they worried that the
> bake-out PLC (Programmable Logic Controller) cards may not functioin
> properly in an environment of radiation and magnetic field.
> After testing from Tuesday night to Monday morning, the continuous
> baking in the BtA line started Wed. night and the vacuum system
> in the BtA line is expected to be back to normal late Sun.
>
> On a not-so-good note, people were worrying about the fact
> that one of the silica foil was found to be deformed (there was a
> big "bubble") and it was used in the last run for a short time.
> We need the silica foil (instead of the carbon foil) for better
> momentum uniformity --- necessary for bunch merging to gain a
> factor of 2 in the beam intensity.
>
>
> (4) NSRL run smoothly in the last few days:
>
> Thanks to the machine and operators, NSRL ran smoothly
> in the last few days.  An experiment planned for today (Friday)
> was postponed to next week because their cells cannot be grown
> fast enough.
>
>
> Kin
>
> ====== ======= ====== ======= ====== ======= ====== ======= ======
>
> This SPY news channel solicits YOUR input of any sorts
> (comments, good/bad news, etc.).  You'll be paid back
> with loads of gratefulness :-)
>
>
>
>


_______________________________________________
Brahms-l mailing list
Brahms-l@lists.bnl.gov
http://lists.bnl.gov/mailman/listinfo/brahms-l