Create PS File: A postscript file is created after the scan. |
Print PS File: A postscript file is printed after the scan. |
Automatic Beam Shutter: This flag enables a procedure that interrupts scans when an injection occurs and waits for the beam to return. It is done by the function was_injection(). The incoming flux is measured by the “Flux counter” and the selected scan timer. It is compared with the minimum count rate. The counter, the timer and the minimum rate are defined in 7.14. After the beam returns, Online waits Heatup Time seconds ( specified in 7.9) before it continues to scan. |
Use MOSTAB: The MOSTAB is operated in the following
way: it needs a setpoint, a flux input and a signal for the DORIS
current.
The setpoint is specified usig the MOSTAB widget 6.8.
An example for a
setpoint is 70%, left edge. The DORIS signal
can be an analog input
which fed into the front panel by a cable or it can be a digital value
which is read from a server (and multiplied with 100).
The source of the DORIS signal
is selected by the 'Analog' button of the MOSTAB widget. 'Analog'
means input via cable.
When the scan is started, the setpoint
is sent to the MOSTAB and a peak search is initiated.
In addition Online sets the symbol MOSTAB_SP.
This symbol is intended to be used for optional MOSTAB corrections during the
scan. In this case the user has to prepare some extra code
for the during |
Automatic Filter: An absorber is adjusted. SIGNAL is kept between FILTER_MIN and FILTER_MAX. The absorber is moved in steps of FILTER_DELTA. The procedure FC_ADJUST_FILTER() is called before the during-macro is executed. This feature is beam line specific. Talk to an expert before enabling this flag. |
Automatic Filter (Script): An automatic absorber procedure which is implemented by user-supplied Perl code. An example can be found here 7.1.5. At the end of the scan the absorber is moved to its maximum. This feature is beam line specific. Talk to an expert before enabling this flag. |
'Write to disk' is always true: The data is written to disk without asking for confirmation. |
Include motor positions: The output file contains the motor positions. |
Include regions: The output file contains the scan regions, valid only for EXAFS and other regions scans. |
Additional fio comments: Online evaluates the function
Spectra::fio_comments(). The result is copied into the
comment section of the output file.
The user defines
Spectra::fio_comments() in /online_dir/TkIrc.pl.
An example can be found here 7.1.5.
The feature can also be invoked by setting the symbol flag_additional_fio_comments to 1. |
Additional fio parameter: Online evaluates the function Spectra::fio_parameters(). The result is copied into the parameter section of the output file. The user defines Spectra::fio_parameters() in /online_dir/TkIrc.pl. An example can be found here 7.1.5. |
Bell on scan end: |
Use SSA: The SSA (Simple Scan Analysis) procedure is run on scan_name at the end of the scan. The result is written to the output file. It can be used by the auto-return option. |
Display Deadtime: The deadtime [%] is defined as (elapsedTime - sampleTime)/elapsedTime. The main contributions to the deadtime are the motor movements and GUI updates. The fraction of the movements can be estimated by executing a dummy scan with the same scan device selection. The GUI update speed can be enhanced by disabling the update of the motor list box. See flag below. |
Log Scale for MCAs: Selects a logarithmic scale for MCAs. |
Smart listbox update: An option to speed-up the scans: the motor listbox of the toplevel menu is not updated when the scan is active. You may also consider to iconize the toplevel widget which also prevents it from being updated. |
Continuous scan mode: Continuous scans are described in a separate section (7.3). No MCAs and VCs are allowed for this scan mode. |
Continuous scan mode (raw): A motor is started and
the during-file is repeatedly executed as long as the motor is moving.
In contrast to the normal continuous scan mode, VCs, MCAs and
SCAs may be selected. The price that one has to pay is a
reduced temporal coverage, e.g.: while the MCAs are read-out, the
timer is inactive (the motor is moving and nobody is watching).
It makes no sense to use the raw mode without reading MCAs or VCs.
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