[PRad] draft presentation

Wed Mar 23 23:40:56 EDT 2016

Hi Eugene, 
Sorry for the late submission. 
Please see the new version of my presentation. 
You could upload this one 

Thanks 
Kondo
________________________________________
From: PRad [prad-bounces at jlab.org] on behalf of Eugene Pasyuk [pasyuk at jlab.org]
Sent: Wednesday, March 23, 2016 9:46 PM
To: Ashot Gasparian
Cc: prad
Subject: Re: [PRad] draft presentation

Ok. I'll make change in the agenda.

-Eugene

----- Original Message -----
> From: "Ashot Gasparian" <gasparan at jlab.org>
> To: "Eugene Pasyuk" <pasyuk at jlab.org>
> Cc: "Ashot Gasparian" <gasparan at jlab.org>, "prad" <prad at jlab.org>
> Sent: Wednesday, March 23, 2016 9:43:45 PM
> Subject: Re: [PRad] draft presentation

> Eugene,
>
> The part "expected results" should not be in my talk, Haiyan is covering
> that part.
> That is good enough.
>
> Ashot
>
>
>> I think the transporter will allow control on the millimeter level.
>> Why would it move from the position if the motors are not moving?? Are you
>> expecting an earthquake? We will have to disconnect and lock/tag power for
>> the motor drivers once it is in position before we attach the pipe to the
>> window. This is very important! If it moves, it breaks the window.
>> We still have time to think about it and may be check with Dave Kashy who
>> designed it.
>>
>> On the other subject. I think it would be good if you put direct answers
>> to appropriate items from the report. The items are listed on the agenda
>> next to your talk.
>>
>> -Eugene
>>
>> ----- Original Message -----
>>> From: "Ashot Gasparian" <gasparan at jlab.org>
>>> To: "Eugene Pasyuk" <pasyuk at jlab.org>
>>> Cc: "Ashot Gasparian" <gasparan at jlab.org>, "prad" <prad at jlab.org>
>>> Sent: Wednesday, March 23, 2016 7:39:31 PM
>>> Subject: Re: [PRad] draft presentation
>>
>>> If we can position the HyCal in the beam with a +/- 1. mm
>>> accuracy without taking it from the Transporter then we can
>>> go with that option. There is one more question on this way:
>>> how we are going to keep that alignment for 3 days?
>>> If it is also possible then we go with that option.
>>>
>>> Ashot
>>>
>>>
>>>>
>>>>
>>>> -Eugene
>>>>
>>>> ----- Original Message -----
>>>>> From: "Ashot Gasparian" <gasparan at jlab.org>
>>>>> To: "Eugene Pasyuk" <pasyuk at jlab.org>
>>>>> Cc: "Ashot Gasparian" <gasparan at jlab.org>, "prad" <prad at jlab.org>
>>>>> Sent: Wednesday, March 23, 2016 5:59:18 PM
>>>>> Subject: Re: [PRad] draft presentation
>>>>
>>>>> Okay, there is still the HyCal question open to me. I agree that we
>>>>> can
>>>>> survey GEMs
>>>>> vs. HyCal when HyCal is on the Transporter. But, we can not position
>>>>> and
>>>>> survey the
>>>>> HyCal in the beam position without taking it off from the Transporter.
>>>>> I am not sure how we can position HyCal on the beam without surveying
>>>>> it.
>>>>> Also, it
>>>>> needs to be fixed in the beam position.
>>>>> I tend to go with a ~4 hours of technicians work but have a provided
>>>>> measurements.
>>>>>
>>>>
>>>> We always can survey HyCal in Hall coordinates. The alignment is
>>>> another
>>>> story. Yes, we won't be able to do fine tuning (pitch/yaw/roll and Z
>>>> translation). But we still can do X and Y translation using transporter
>>>> to
>>>> align hycal face centered on the geometrical beam axis. Survey guys can
>>>> tell us how much up/down left/right to move. And they can tell tell us
>>>> pitch/yaw/roll angles. We won't be able to adjust them but we will know
>>>> them. My claim that for the short test run since HyCal is not
>>>> calibrated
>>>> anyways these angles are not very important if they are not 0. We will
>>>> have to redo all the alignment procedures in May. For the test run the
>>>> goal is to learn how to do that. THe other goal is to see that all the
>>>> electronics and DAQ works as we want it.
>>>>
>>>>> Please comment on this.
>>>>>
>>>>> Also, can you put together those items for the Target sell alignment
>>>>> procedure?
>>>>
>>>> I can try to write it up but I need some numbers from Chris: horizontal
>>>> and distances to the edges of the quadrants.
>>>>
>>>>> Thanks,
>>>>> Ashot
>>>>>
>>>>>
>>>>>>
>>>>>>
>>>>>> -Eugene
>>>>>>
>>>>>> ----- Original Message -----
>>>>>>> From: "Ashot Gasparian" <gasparan at jlab.org>
>>>>>>> To: "Eugene Pasyuk" <pasyuk at jlab.org>
>>>>>>> Cc: "Ashot Gasparian" <gasparan at jlab.org>, "prad" <prad at jlab.org>
>>>>>>> Sent: Wednesday, March 23, 2016 5:10:39 PM
>>>>>>> Subject: Re: [PRad] draft presentation
>>>>>>
>>>>>>> Eugene,
>>>>>>>
>>>>>>> Here are some discussions:
>>>>>>> 1) If we keep HyCal on the transporter we can not put accurately
>>>>>>>    enough in the beam and survey it (with the GEM).
>>>>>>
>>>>>> Here are my thoughts why.
>>>>>> GEM can be surveyed relative to HyCal regardless of whether it is on
>>>>>> the
>>>>>> cart or on the transporter.
>>>>>> I agree that when HyCal is on the transporter we don't have Z-degree
>>>>>> of
>>>>>> freedom. But for the test run it is not very important. If we put it
>>>>>> on
>>>>>> the cart now, we will have to put it back on the transporter for
>>>>>> calibration in May and then back to the cart. This will save time and
>>>>>> efforts.
>>>>>>
>>>>>>> 2) We need to protect the rest of the setup while accelerator is
>>>>>>>    tuning the beam. The "Beam block" is in between two collimators.
>>>>>>>    We have done that in past many times. Are you referring to legal
>>>>>>>    terminology (safety) or a technical possibility?
>>>>>>
>>>>>> It's terminological. Also there is empty space between the
>>>>>> collimator.
>>>>>> To
>>>>>> block the beam we would need to move collimator by an inch or so from
>>>>>> the
>>>>>> nominal position. You want protection from tagger magnet trip. There
>>>>>> is
>>>>>> an
>>>>>> FSD interlock for that, machine shuts down if magnet trips.
>>>>>>
>>>>>>> 3)for the "dropping 1(bcdf) items, I do not see a connection with
>>>>>>> HyCal
>>>>>>>   being in the beam. I think we need to see the quality of the
>>>>>>> e-beam
>>>>>>>   by scanning it with the upstream harp. Are you questioning the
>>>>>>>   detection part of the harp?
>>>>>>
>>>>>> No, we will do harp studies. These items are about photon radiator
>>>>>> which
>>>>>> we do not need. We can leave for the very end if we have time.
>>>>>>
>>>>>>> 4) for the part 2(lmn), yes it is utilizing the additional foils
>>>>>>> with
>>>>>>>    quadrants. Do you want to change the wording?
>>>>>>
>>>>>> It is not just change of wording, it is a bit different procedure. We
>>>>>> have
>>>>>> a rough idea but we need to spell it out step by step.
>>>>>>
>>>>>>> 5) yes, I will add the GEM timing part.
>>>>>>>
>>>>>>> Please comment, the HyCal in the beam is important question.
>>>>>>>
>>>>>>> Ashot
>>>>>>>
>>>>>>>> Some comments on the Run Plan.
>>>>>>>>
>>>>>>>> We should keep HyCal on the transporter for the test run.
>>>>>>>>
>>>>>>>> 1. There is no "Beam block" position for the collimator. We should
>>>>>>>> use
>>>>>>>> FSD
>>>>>>>> interlock with tagger magnet power supply.
>>>>>>>>
>>>>>>>> Drop 1(b,c,d,f) It is pointless because HyCal will not be in the
>>>>>>>> beam.
>>>>>>>>
>>>>>>>> Cell alignment procedure 2(l,m,n) should be changed to utilize
>>>>>>>> additional
>>>>>>>> foils with quadrants.
>>>>>>>>
>>>>>>>> Add GEM trigger delay adjustment.
>>>>>>>>
>>>>>>>> -Eugene
>>>>>>>>
>>>>>>>> ----- Original Message -----
>>>>>>>>> From: "Ashot Gasparian" <gasparan at jlab.org>
>>>>>>>>> To: "prad" <prad at jlab.org>
>>>>>>>>> Sent: Wednesday, March 23, 2016 4:09:15 PM
>>>>>>>>> Subject: [PRad] draft presentation
>>>>>>>>
>>>>>>>>> Hi All,
>>>>>>>>>
>>>>>>>>> The draft of my presentation is attached. I am still working on
>>>>>>>>> the
>>>>>>>>> formating
>>>>>>>>> part so, please check the information and the numbers for now.
>>>>>>>>>
>>>>>>>>> Kondo, please check the "GEM Requirement" slides and let me know
>>>>>>>>> if
>>>>>>>>> some
>>>>>>>>> numbers need to be corrected.
>>>>>>>>>
>>>>>>>>> Thank you,
>>>>>>>>> Ashot
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> PRad mailing list
>>>>>>>>> PRad at jlab.org
>>>>>>>>> https://mailman.jlab.org/mailman/listinfo/prad
_______________________________________________
PRad mailing list
PRad at jlab.org
https://mailman.jlab.org/mailman/listinfo/prad
-------------- next part --------------
A non-text attachment was scrubbed...
Name: KG_pRadReadinessReview_20160325.pdf
Type: application/pdf
Size: 2451581 bytes
Desc: KG_pRadReadinessReview_20160325.pdf
URL: <https://mailman.jlab.org/mailman/private/prad/attachments/20160324/14fb5ca6/attachment-0001.pdf>