last update: RJW, 01/27/00
From: M. Sakuda
Subject: Shift duty at North Counter Hall
Date: Wed, 19 Jan 2000
(1) Whenever accelerator group changes any parameters which are related to fast extraction
and the ion source, they will CALL the K2K shift person at North Counter Hall (x5758) and
explain what they do. Accelerator group records the change in the beam group logbook.
When the K2K North Hall shift person receives this call, he must record it in the K2K logbook, and also notify the Nu-Hall shift crew (phone 5773).
Then, he must watch for any changes in EP1-CT (CT at EP1), TGT-CT (CT at Target) and SPD (SSD at Muon pit). They can be seen in the web page http://nubl08.kek.jp/ Click *Beamline Monitor Applet (Ver1.0 for Accelerartor) for these three quantities (Names = EP1, SPIC and SPD, respectively)
(2) When Accelerator group changes any other parameters than the ones in (1), they record these changes in the beam group logbook, but they do not call us.
If the shift person observes a big change (>5%), then he should be careful. A big increase in EP1-CT, TGT-CT and SPD is welcome. If he sees a big decrease in these CTs or a big decrease in SPD, then he should tell accelerator group about it and tell them to go back to the previous parameter. It is advised that he consult the beam monitor group (Ishii or Sakuda if any beam monitor members are not found), if he cannot judge by himself. In either case, the decision should be recorded in the logbook and reported via e-mail (To: monitor@neutrino, steering@neutrino).
As we gain experience, we may find other important machine parameters which affect our neutrino yield. Then, we will add these items to the ones given in (1). Similarly, if any one of these items turns out to be not very important, then we drop the item from the list.
Accelerator operators: 5711
Ishino: 0298-64-5387 ishino@neutrino
Hasegawa: 0298-64-5387 hasegawa@neutrino
Hayato: 0298-64-5387 hayato@neutrino
Yoshida: 0298-64-5387 yoshida@neutrino