General Instructions for K2K Shift Workers

(last update: 10/29/2004, J. Wilkes)

Come to your shift 30 minutes early!
Phone list of experts in case of problems with detector subsystems.
New General Instructions (10/2004)
- Nu-hall shift, please do not stop the run unless he is asked to do so by the north-counter-hall shift or the detector experts.
- North-counter-hall shift, please tell the nu-hall shift clearly if he has to stop or start the run. In a case of a short beam stop such as a linac down for about 10 minutes, do not ask the nu-hall shift to stop the run.
North Hall Control Room shift person is the Shift Leader and is in charge of communicating with accelerator operators (phone 5711) on behalf of K2K.
Currently we have three official logbooks:

logbook #1 at North-Counter hall for accelerator group.
This logbook is used by accelerator group. K2K members should write down records of:

beam-line access (only by specially authorized K2K members ),

magnet setting change (only by specially authorized K2K members ),

hardware change of beam monitors

logbook #2 at North-Counter Hall for K2K shift. K2K members should write down records of:

beam-line DAQ run number,

date and time for any changes during the experiment. This includes magnet setting, hardware changes for beam monitors, etc. ( these may be duplicate information from logbook no.1), if they are changed.

logbook #3 at Neutrino Hall hut.

This logbook should contain front detector DAQ information and any information from North Counter Hall shift.

Again this logbook may have duplicate information from #1 and #2 logbooks.

Special instructions for the NH-CR shift:

GPS check added to the regular NH-CR shift duty:
A new check for GPS timing was added to the check list. Here is the procedure:
Go to "TRG vs GPS Statistics" plots.
(or: From shift schedules and information page, click Online monitors" then "GPS system monitor". Click "TRG vs GPS1/GPS2 statistics")
Check the most bottom figure, "histogram of GPS1-GPS2 (24h)". Please make sure that the figure is recently updated, if not: reload.
If the distribution is within +/- 100nsec range, it is OK. If not, please call an expert.
GPS experts:
Hans Berns ( berns@phys.washington.edu )
Hiroki Sato ( satohiro@neutrino.kek.jp )

(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 accelerator 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 Accelerator) 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 accelerator 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.

NH-CR instructions last updated:
M. Sakuda, 1/19/00

If you drink or eat something, it is your duty to take care of the garbage. Do not mess up the work place. When you have no other work to do, please clean up experimental area and electronics hut.