[Dsg-hallc_nps] [EXTERNAL] NPS LED/VLD controller specs/information/summary

Thu Mar 2 11:11:53 EST 2023

Hi Brian,

Software should be fine for that use.

On 2/28/23 15:09, Brian Eng wrote:
> Hi Bryan,
> 
> For the channel mask PVs are there any issues with setting them multiple 
> times or should they only be set once? I'm also assuming those PVs are 
> just numbers that have each bit corresponding to a channel, e.g. bit 0 = 
> chan 0, bit 1 = chan 1, etc?
> 
> I ask because it would be easier on the EPICS screen if we could just 
> have each channel represented by a boolean check box to enable/disable 
> and update the mask PV each time a channel is changed.
> 
> Simona,
> 
> For the rate and width PVs will they only be set once to the same value 
> for all the cards or will those need to be settable on a per-card basis?
> 
> Thanks
> ------------------------------------------------------------------------
> *From:* Bryan Moffit <moffit at jlab.org>
> *Sent:* Monday, February 13, 2023 10:07 AM
> *To:* Aaron Brown <ambrown at jlab.org>; dsg-hallc_nps at jlab.org 
> <dsg-hallc_nps at jlab.org>
> *Cc:* Brian Eng <beng at jlab.org>; William Gu <jgu at jlab.org>; Chris Cuevas 
> <cuevas at jlab.org>; Robert Michaels <rom at jlab.org>
> *Subject:* Re: [EXTERNAL] NPS LED/VLD controller specs/information/summary
> Hi Aaron.
> 
> There have been updates since this last email.  I have added
> descriptions for PVs to control the VLD and channels.
> 
> The IOC is running on nps-vme4 with
>     PORT=vme4
> and Slots indicated with e.g. (slot 17)
>     R=VLD17
> 
> e.g. ModuleID:
>     vme4VLD17:ModuleID
> 
> 
> I'm admittedly inexperienced with EPICS drivers.  I will need more input
> on what the Controls GUI requires to function to proceed much further
> with development.
> 
> There are examples scripts to operate a single module with calibration
> pulse mode, and to modify the square waveform parameters.
> 
> On 19-Jan-23 1:52 PM, Bryan Moffit wrote:
>> Hi Aaron.
>> 
>> I am out until Feb 1st.
>> 
>> I will try to add an explanation of the PVs.
>> 
>> 
>> On 19-Jan-23 12:16 PM, Aaron Brown wrote:
>>> Hi Bryan et al,
>>>
>>> Just wanted to follow up with regards to the LED controls programming.
>>> We have finished the layout of the control GUI.
>>> Brian and I have gone over the information in the Github.
>>> Is there any additional documentation detailing exactly what the PVs 
>>> control.
>>> What is not obvious is if the pulse frequency is hard coded in the PV 
>>> and exactly what channels are controlled by a PV.
>>> Is there a newer version beyond this beta version?
>>>
>>> -- Aaron
>>> ------------------------------------------------------------------------
>>> *From:* Bryan Moffit <moffit at jlab.org>
>>> *Sent:* Monday, December 5, 2022 7:57 AM
>>> *To:* Aaron Brown <ambrown at jlab.org>; Brad Sawatzky <brads at jlab.org>; 
>>> dsg-hallc_nps at jlab.org <dsg-hallc_nps at jlab.org>
>>> *Cc:* Brian Eng <beng at jlab.org>; William Gu <jgu at jlab.org>; Chris 
>>> Cuevas <cuevas at jlab.org>; Robert Michaels <rom at jlab.org>
>>> *Subject:* Re: [EXTERNAL] NPS LED/VLD controller 
>>> specs/information/summary
>>> I've pushed a 'beta' version of the vld-epics driver to github:
>>>
>>> https://github.com/JeffersonLab/vld-epics 
> <https://github.com/JeffersonLab/vld-epics>
>>> <https://github.com/JeffersonLab/vld-epics 
> <https://github.com/JeffersonLab/vld-epics>>
>>>
>>> It has read/write support to the VLD parameters, but does not yet
>>> include 'automated' specific procedure support (bleaching, calibration
>>> pulse).
>>>
>>> I'm starting to code up that procedure support into the vld library
>>> (which has also been updated).  We ought to talk about specifics for the
>>> bleaching / calibration pulse functionality and driver hooks to your UI.
>>>
>>> On 22-Nov-22 5:36 PM, Aaron Brown wrote:
>>>> Hi Brad,
>>>>
>>>> Brian will be on vacation from 11/24/2022 until 01/03/2023.
>>>> He will begin working on the control scripts that utilize the 
>>>> existing Linux drivers and is confident that this can be completed by 
>>>> early January 2023.
>>>> With regards to the "Beta quality GUI", the EPICS drivers would need 
>>>> to be completed before we could finish this.
>>>> The layout of the GUI is done, we just need the PVs before we can 
>>>> move to the testing/debugging phase.
>>>> for the EPICS drivers, it would be a good idea to see if someone from 
>>>> the FE/DAQ group could complete the task.
>>>>
>>>> Happy Thanksgiving!
>>>>
>>>> -- Aaron
>>>> ------------------------------------------------------------------------
>>>> *From:* Brad Sawatzky <brads at jlab.org>
>>>> *Sent:* Monday, November 21, 2022 6:42 PM
>>>> *To:* Bryan Moffit <moffit at jlab.org>; dsg-hallc_nps at jlab.org 
>>>> <dsg-hallc_nps at jlab.org>
>>>> *Cc:* Brian Eng <beng at jlab.org>; Aaron Brown <ambrown at jlab.org>; 
>>>> William Gu <jgu at jlab.org>; Chris Cuevas <cuevas at jlab.org>; Robert 
>>>> Michaels <rom at jlab.org>
>>>> *Subject:* [EXTERNAL] NPS LED/VLD controller specs/information/summary
>>>> After recent discussions with Bryan and William, I volunteered to send
>>>> out a status/summary on the NPS LED/VLD needs for the near (Dec/Jan)
>>>> and medium term (Feb/Mar).
>>>>
>>>>
>>>> - Operational specs for the LED pulser are in William's directories.
>>>>     - His software libraries and test code can be found here:
>>>>          /group/da/distribution/coda/Hardwaremanual/VLD/
>>>>       or from the CODA web page.  The test software can be accessed from
>>>>          /daqfs/home/jgu/Triggersoftware/trigger.c, VLDtestN functions.
>>>>     There are docx files in the /group directory with specs and 
>>>> technical
>>>>     details.  Ideally we would be running the software under linux 
>>>> (intel
>>>>     vme computer), so any vxworks specific code should be updated to
>>>>     compile in that environment.
>>>>     - I am attaching what I think is the most recent spec document for
>>>>       easy access:  'VLD.docx'
>>>>
>>>> - A Control/GUI requirements summary is attached as a text file.
>>>>     - See: 'LED-GUI-summary-21Nov2022.txt'
>>>>
>>>> - Here is a link to some (intel controller) development code from Bryan
>>>>     Moffit: 
>>>> https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_JeffersonLab_vld&d=DwIDAw&c=CJqEzB1piLOyyvZjb8YUQw&r=TkJUDpm1-rWCci4nhe47n5XMOLWvRg1TNSqSgPyxyhs&m=1N3fMPIfm78FoxmXp_mXreXU8E0U2i30VAPa6A-PqDvhIBy5Wm1U9gzMBHv6iWyH&s=B6Fs97LKHZhH97IC2bajCCDXfhExhHaLYIvGerKATkM&e= <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_JeffersonLab_vld&d=DwIDAw&c=CJqEzB1piLOyyvZjb8YUQw&r=TkJUDpm1-rWCci4nhe47n5XMOLWvRg1TNSqSgPyxyhs&m=1N3fMPIfm78FoxmXp_mXreXU8E0U2i30VAPa6A-PqDvhIBy5Wm1U9gzMBHv6iWyH&s=B6Fs97LKHZhH97IC2bajCCDXfhExhHaLYIvGerKATkM&e=> <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_JeffersonLab_vld&d=DwIDAw&c=CJqEzB1piLOyyvZjb8YUQw&r=TkJUDpm1-rWCci4nhe47n5XMOLWvRg1TNSqSgPyxyhs&m=1N3fMPIfm78FoxmXp_mXreXU8E0U2i30VAPa6A-PqDvhIBy5Wm1U9gzMBHv6iWyH&s=B6Fs97LKHZhH97IC2bajCCDXfhExhHaLYIvGerKATkM&e= <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_JeffersonLab_vld&d=DwIDAw&c=CJqEzB1piLOyyvZjb8YUQw&r=TkJUDpm1-rWCci4nhe47n5XMOLWvRg1TNSqSgPyxyhs&m=1N3fMPIfm78FoxmXp_mXreXU8E0U2i30VAPa6A-PqDvhIBy5Wm1U9gzMBHv6iWyH&s=B6Fs97LKHZhH97IC2bajCCDXfhExhHaLYIvGerKATkM&e=>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_JeffersonLab_vld&d=DwIDAw&c=CJqEzB1piLOyyvZjb8YUQw&r=TkJUDpm1-rWCci4nhe47n5XMOLWvRg1TNSqSgPyxyhs&m=1N3fMPIfm78FoxmXp_mXreXU8E0U2i30VAPa6A-PqDvhIBy5Wm1U9gzMBHv6iWyH&s=B6Fs97LKHZhH97IC2bajCCDXfhExhHaLYIvGerKATkM&e= <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_JeffersonLab_vld&d=DwIDAw&c=CJqEzB1piLOyyvZjb8YUQw&r=TkJUDpm1-rWCci4nhe47n5XMOLWvRg1TNSqSgPyxyhs&m=1N3fMPIfm78FoxmXp_mXreXU8E0U2i30VAPa6A-PqDvhIBy5Wm1U9gzMBHv6iWyH&s=B6Fs97LKHZhH97IC2bajCCDXfhExhHaLYIvGerKATkM&e= <https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_JeffersonLab_vld&d=DwIDAw&c=CJqEzB1piLOyyvZjb8YUQw&r=TkJUDpm1-rWCci4nhe47n5XMOLWvRg1TNSqSgPyxyhs&m=1N3fMPIfm78FoxmXp_mXreXU8E0U2i30VAPa6A-PqDvhIBy5Wm1U9gzMBHv6iWyH&s=B6Fs97LKHZhH97IC2bajCCDXfhExhHaLYIvGerKATkM&e=>>>
>>>>
>>>>
>>>> ---------------------------------------------
>>>> Near Term Requirements (ie. late-Dec/early-January)
>>>> ---------------------------------------------
>>>> - We don't need a full working GUI, but we do need a clear, student-
>>>>     accessible way to run specific tests.
>>>>     * I am imagining a set of pre-compiled, special-case binaries or
>>>>       script(s) that are run from a command-line running on the VME
>>>>       contoller(s)
>>>>
>>>> - The scripts should be able to do the following:
>>>>     A.  Turn all LED on in bleach mode
>>>>       * This should also set the Trg_out NIM ouput logic HI *first*
>>>>         and that needs to be tied into the HV interlock circuit.
>>>>
>>>>     B.  Pulse one or more specified LEDs when a pulse is seen on the VLD
>>>>         Trg/Clk input.
>>>>         - The list of LEDs to be activated, pulse characteristics, 
>>>> etc can
>>>>           either be hardcoded, or read-in via a config file.  Doesn't 
>>>> have
>>>>           to be perfect, just needs to work.  We can fine-tune later.
>>>>
>>>>
>>>> ---------------------------------------------
>>>> 'Beta' quality GUI (Feb, early-March)
>>>> ---------------------------------------------
>>>> - NPS installation begins this spring -- that will come very soon!
>>>>
>>>> * We will need at least a 'beta' quality (ie. feature complete, but may
>>>>     be buggy) GUI by Feb/early-March so we can test and fix bugs before
>>>>     the systems is disassembled and moved to the Hall.  It will be a 
>>>> while
>>>>     before it is working again in the Hall and we definitely do not want
>>>>     to leave testing this critical system to the summer.
>>>>
>>>> -- Brad
>>>>
>>>> -- 
>>>> Brad Sawatzky (he/him), PhD <brads at jlab.org> -<>- Jefferson 
>>>> Lab/SciComp/F272
>>>> Ph: 757-269-5947  -<>-  Fax: 757-269-5235  -<>- Pager: 
>>>> brads-page at jlab.org
>>>> The most exciting phrase to hear in science, the one that heralds new
>>>>     discoveries, is not "Eureka!" but "That's funny..."   -- Isaac 
>>>> Asimov