Hi Adam,
can you also compare data and MC yields as a function of theta_e, like
Eugene did for d(e,e'n)?
Regards,
Michael
On Wed, 12 Apr 2006, Adam DeGrush wrote:
> Is it possible but I still see a higher value for the second Q2 bin
> (0.2<Q2<0.3). I will plot again with more bins and see what is the trend.
> Adam
>
> On Apr 11, 2006, at 11:13 PM, Michael Kohl wrote:
>
>> Hi,
>>
>> concluding, it must the tossing volume for the GEn Montecarlo for which the
>> lower bound may be too tight (Vitaliy?). The same may apply to the d(e,e'p)
>> MC, Adam? Is this a possible explanation for hPz being high in the lowest
>> bin?
>>
>> For those interested in this discussion, read from the bottom.
>>
>> Best regards,
>>
>> Michael
>>
>>
>>
>> On Tue, 11 Apr 2006, Chi Zhang wrote:
>>
>>>
>>> Dear Michael and Eugene,
>>>
>>> sorry, just got back from NYC.
>>>
>>> Let's not play with technicality, "starts" means useful stuff starts. I
>>> don't care about the tiny weeny tail at 22. those are obviously
>>> mis-recon/resolution-spill-overs. convince yourself by running an epel MC
>>> with theta lower bound set to say 24.5 degrees and you ll see spills to
>>> below 23 and the general shape of the tail is well produced. So when we
>>> talk about acceptance, it starts at ABOVE 24. It is only due to the
>>> resolution that we start our binning a bit below that. whether or not to
>>> go all the way down to 22 is your personal call, I don't. even I do, those
>>> trailing events will not have any impact on any results.
>>>
>>> I do not know what went into the GEN Monte Carlo so I can not comment on
>>> that.
>>>
>>> But I know that I looked at BOTH hydrogen runs in late 2004 and deuterium
>>> runs in 2005 and the acceptance starts from 24. and the plot you showed is
>>> not any bit different than any of the theta plot we v been looking at for
>>> years.
>>>
>>> If you guys had sit down and spent 1 minute before calling on "everyone",
>>> You could have really spared me of the heart attack I almost had, and I
>>> could really have gone to sleep a bit earlier last night since I needed to
>>> get up 4:30am this morning!
>>>
>>> And I refrain myself from commenting on the way BLAST collabroation
>>> operates.
>>>
>>> Best regards
>>>
>>> Chi
>>>
>>> On Tue, 11 Apr 2006, Eugene J. Geis wrote:
>>>
>>>> 2 postscripts:
>>>> 1. mc_real.ps
>>>> top left -> electron theta from my 2005 D2 data from v17
>>>> GEN cuts made.
>>>> top right -> same red curve, e-theta with MC on top
>>>> GEN cuts made on both
>>>> bottom left -> electron theta from MC files without xs0 weight
>>>> GEN cuts applied
>>>> bottom right -> tml, aka generated e-theta from MC files
>>>> NO GEN CUTS APPLIED.
>>>> 2. Theta.ps
>>>> twl from 2005 v17 data from flr files.
>>>> QWL==-1 is the ONLY CUT.
>>>>> I did it, 1 minute and I know that the acceptance starts at 24 degrees
>>>>> fair and square!
>>>> What is your definition of "starts"? Cause I did it and I saw it "Start"
>>>> at 22 and finally have a significant rise at 24. fair and square.
>>>> MC files were run and crunched by Vitaly a few months ago.
>>>> I can't find their respective directory. According to v17 flr-files
>>>> and earlier, data acceptance "STARTS" at 22 but does not become
>>>> significant until 24. MC "STARTS" at 24 and is not significant until
>>>> 26 degrees.
>>>> This is what leads to this claim. I see what the plots look like...
>>>> -eugene
>>>> Quoting Chi Zhang <zhangchi@MIT.EDU>:
>>>>> Hi Michael and Eugene,
>>>>> I believe this claim of "mismatch" is utterly nonsense!
>>>>> Instead of wasting everyone's time verifying. Why not Eugene explain to
>>>>> us what led to this claim. why it takes "a mismatch of data and MC" to
>>>>> show "the angle acceptance now start at ~22 degrees", why was
>>>>> "flrpm->Draw("twl","qwl==-1")"
>>>>> not enough?
>>>>> I did it, 1 minute and I know that the acceptance starts at 24 degrees
>>>>> fair and square!
>>>>> Why did this claim even get through to BLAST_ANAWAE? 2 degrees span by 1
>>>>> meter is a whopping 3.5 centimeters! Did you really believe that the
>>>>> chambers were (mis)placed to the down stream by more than 3cm?
>>>>> Chi
>>>>> On Mon, 10 Apr 2006, Michael Kohl wrote:
>>>>>> Hi,
>>>>>> we'll meet on Wednesday 2006/04/12 at 13:30 at Bates.
>>>>>> Proposed agenda:
>>>>>> -Recrunch preparation, bugfixes, workarounds
>>>>>> -Mascarad handling
>>>>>> -Shifted acceptance
>>>>>> Eugene had shown a mismatch of data and MC at low theta_e indicating
>>>>> that
>>>>>> the angle acceptance may now start at ~22 degrees instead of ~24
>>>>> degrees.
>>>>>> This would have a lot of impact on the dynamics as Q2 would be
>>>>>> significantly affected by such a shift.
>>>>>> I'm asking everyone to verify this shift. Compare online crunching
>>>>> with
>>>>>> v3_4_14 (=ANALDIR) and /net/data/11/Analysis/data/v3_4_17/lrd. The
>>>>> latter
>>>>>> version contains ntuples for both hydrogen and 2005 deuterium.
>>>>>> Checks should be made for true event samples in p(e,e'), p(e,e'p),
>>>>>> p(e,e'pi+), p(e,e'p)pi0, d(e,e'), d(e,e'd), d(e,e'p), d(e,e'n).
>>>>>> Regards,
>>>>>>
>>>>>> Michael
>>>>>> +-------------------------------------+--------------------------+
>>>>>> | Office: | Home: |
>>>>>> |-------------------------------------|--------------------------|
>>>>>> | Dr. Michael Kohl | Michael Kohl |
>>>>>> | Laboratory for Nuclear Science | 5 Ibbetson Street |
>>>>>> | MIT-Bates Linear Accelerator Center | Somerville, MA 02143 |
>>>>>> | Middleton, MA 01949 | U.S.A. |
>>>>>> | U.S.A. | |
>>>>>> | - - - - - - - - - - - - | - - - - - - - - -|
>>>>>> | Email: kohlm@mit.edu | K.Michael.Kohl@gmx.de |
>>>>>> | Work: +1-617-253-9207 | Home: +1-617-629-3147 |
>>>>>> | Fax: +1-617-253-9599 | Mobile: +1-978-580-4190 |
>>>>>> | http://blast.lns.mit.edu | |
>>>>>> +-------------------------------------+--------------------------+
>>>> --------------------------------------------------------------------------
>>>> Eugene Geis
>>>> PhD Student, Physics Department, ASU
>>>> Research Affiliate, MIT-Bates Laboratory of Nuclear Science
>>>> eugene.geis@asu.edu
>>>> --------------------------------------------------------------------------
>>>> http://quickreaction.blogspot.com
>>>
>>
>>
>> +-------------------------------------+--------------------------+
>> | Office: | Home: |
>> |-------------------------------------|--------------------------|
>> | Dr. Michael Kohl | Michael Kohl |
>> | Laboratory for Nuclear Science | 5 Ibbetson Street |
>> | MIT-Bates Linear Accelerator Center | Somerville, MA 02143 |
>> | Middleton, MA 01949 | U.S.A. |
>> | U.S.A. | |
>> | - - - - - - - - - - - - | - - - - - - - - -|
>> | Email: kohlm@mit.edu | K.Michael.Kohl@gmx.de |
>> | Work: +1-617-253-9207 | Home: +1-617-629-3147 |
>> | Fax: +1-617-253-9599 | Mobile: +1-978-580-4190 |
>> | http://blast.lns.mit.edu | |
>> +-------------------------------------+--------------------------+
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
+-------------------------------------+--------------------------+
| Office: | Home: |
|-------------------------------------|--------------------------|
| Dr. Michael Kohl | Michael Kohl |
| Laboratory for Nuclear Science | 5 Ibbetson Street |
| MIT-Bates Linear Accelerator Center | Somerville, MA 02143 |
| Middleton, MA 01949 | U.S.A. |
| U.S.A. | |
| - - - - - - - - - - - - | - - - - - - - - -|
| Email: kohlm@mit.edu | K.Michael.Kohl@gmx.de |
| Work: +1-617-253-9207 | Home: +1-617-629-3147 |
| Fax: +1-617-253-9599 | Mobile: +1-978-580-4190 |
| http://blast.lns.mit.edu | |
+-------------------------------------+--------------------------+
This archive was generated by hypermail 2.1.2 : Mon Feb 24 2014 - 14:07:33 EST