mccx15. If you get a message about display refused by server later on, you may want to try another terminal.
From the Session Manager, select Options -> Security..., and authorize all users from Node esaw02.slac.stanford.edu using Transport tcpip. After clicking on Add, and Apply, it should look like:
Then click OK to get out. To save this for future use, select Options -> Save Session Manager.
Telnet to node
esaw02 and log in using the account
Send display to your workstation, or X-terminal, using the command
setenv DISPLAY mccx6:0.0, where
your X-terminal. Note the trailing
:0.0 that you have to add.
Change directory to
Run PAW, and select the default workstation type
with a carriage return. A new window should appear. This is where all your
plots will go. When you see the
PAW > prompt, type
shm to connect to the shared memory section containing all
h/plot ID, where
IDis the histogram number. A complete list of IDs with their corresponding titles is obtained initeractively with the
h/listcommand. The list is rather long, and it may be difficult to locate what you want. If you know the approximate ID number, the command
hl ID1 ID2will give you a list in the range
[ID1,ID2]A subset containing beam related histograms has been extracted and explanation added.
nt/print 9001. In this example, there are 53 variables, each identified by a name, eg
status, and its minimum and maximum values. Beam variables are at the beginning, followed by data from the 2.75-degree spectrometer and then by data from the 5.5-degree spectrometer. Depending on the configuration of the analysis program, there may be no variables corresponding to a particular spectrometer. A detailed explanation of each variable can be found elsewhere.
Here are some basic plotting commands.
makes a histogram of the one variable
caltor2, where the
histogram range is automatically chosen to include all data points.
Scatterplots (or correlation plots in SLC-speak) are made by
nt/plot 9001.calgdspl%index where the first (seoond)
variable goes with the vertical (horizontal) axis.
Both plot commands take additional optional arguments. For example, the
first optional argument is a cut expression, and specifying L as the
5-th argument joins data points with a line. Specifying ! for
intervening optional arguments lets them retain their default values, e.g.
nt/plot 9001.angle_y%index status=0 ! ! ! L gives the
followinig picture, indicating some anomalous behaviour near index = 5100.
These unusual excursions do not show up so well without the
There are manuals available for those interested in the details of Paw. Cern has also provided a very useful Paw Web site with answer to many common questions. E154 experimenters can probably provide some assistance as well.