| ID |
Date |
Author |
Subject |
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211
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Tue Nov 20 16:06:09 2018 |
dk | Projected Inventory of ISOLDE | (To be confirmed / finalized)
==Rack Electronics==
Two (2) 19" electronics racks
=Rack #1=
2 (Two) RAL Amp crate (1 full with modules, 1 with five (5) modules)
21 RAL 109 modules in total. (NB: Extras are borrowed from Miniball)
Two (2) NIM Fans
Four (4) Cable patch boxes
Ribbon cables for patch
Two (2) Preamp power supplies
+/-15 Volt type, up to several Amperes
=Rack #2=
VME crate, with power cable
Seven (7) Silena ADCs
One (1) S9418 ACQ controller
Two (2) CAEN V767 TDC
One (1) CAEN 560
One (1) MVME 24XX Motorola crate Controller
26 ribbon cables
Twelve (12) for analog
Twelve (12) for discrim
Two (2) extra
Camac crate
Five (5) Logic Shaped Outputs (CAMAC)
Two (2) CAMAC / VME converter
One (1) LeCroy 622 Quad Logic (NIM)
One (1) Ortec 566 TAC (NIM)
One (1) Lecroy 222 dual GDG
One (1) Ortec 459 bias supply
NIM crate
One (1) BNC PB-5 digital pulse generator
One (1) BNC PB-4 analog pulse generator -- returned to Edinburgh 2018.12
One (1) Analog ratemeter 4678
One (1) ECL-NIM-ECL EC 1601
One (1) Silena Quad Bias Supply 7710 -- swapped with functional unit 2018.11 from problems in 59Cu
Two (2) LeCroy 419A Logic FI/FO
One (1) Ortec 572 Amplifier
One (1) LeCroy Quad Discriminator 821
One (1) NIM Cooknell homebrew PA Power Supply
One (1) Cooknell Preamplifier
4 (Four) additional Long ribbon cables
2x spare HVBNC cables
BNC to Lemo
Lemo to Ribbon box
lemo cables
==Preamp setup==
2 Preamp feedthrough
Bolts and washers
2 O-Rings + 1 spare
16way BNC multicore
o-ring for ribbon feedthroughs
Julabo Chiller & Insulated External Chiller Lines
Swagelok nylon and brasss ferrels for gas line / coolant piping
spare straight and right angle swagelok fittings
thin green polymer tubing (gas lines, cooling system)
thermometer
thermocouple cable
1 thermocouple vacuum gauge
==Generic Power Connections==
3 Power Bars
20x IEC leads
2x Swiss to UK leads
==Vacuum systems==
Chamber, sliding mount
Scrolling pump
Backflow interlock
Large TMP from TUDA
Controller
Small TMP
Controller
TMP bolts (large and small)
Two (2) vacuum hoses
Valve for TP 1 & 2
vacuum clamps
Two (2) inverse magnetron ion gauges
Multi gauge reader
Old inv magnetron vac gauge meter
Upstream beamline pipe
Gate valve, nipple, adaptor flange to SEC
N2 pipe with valve
Mechanical pressure gauge and "plus" type connector
Blanking kindey plate
bellows
bellow cage
TMP/gauge mounting pipe
==Silicon Detectors and Components==
Two (2) Micron S2-type 1000 um SSDs
Three (3) Micron S2-type 75 um SSDs
dummy detectors
20 ~1 cm spacers for SSD mounting
9 ~2 cm spacers for SSD mounting
Degrader Foils
Irises and controller box
Al heavy ion degraders of various thicknesses.
3 Hamamatsu Photodiodes
1 PCB for Hamamatsu Photodiodes
3 degrader foils (10, 15 20 um Al)
==Beam Diagnostics==
Faraday cup
current integrator for FC
cctv camera power lead
ZnS (or similar) scint screen
==Computer==
Sun Microsystems Tower
Dell monitor
Sun keyboard
Sun mouse
Ethernet hub
==Misc==
alignment plugs for chamber
2 ch oscilloscope
2 (two) basic voltmeters
middle foot sections of blue frame
6 feet for chamber stand
All bolts for chamber stand
Spacers
3 large O-Rings for chamber (spare)
Bolts, nuts and spacers for chamber end flanges and center
short bits of blue frame
braces off blue frame
Wheels for frame
Tools
Safety boots and helmets-
-Daid
-Toby
-Mirco
-Claudia
-Sarah
-Conor
==In Edinburgh==
Target ladder and components |
|
210
|
Tue Nov 20 14:07:37 2018 |
dk | Blue Loan Book Scan | Scan is attached, including all items denoted in the loan book as being taken to ISOLDE.
This will be useful for a complete compilation of our inventory. |
| Attachment 1: loan-book-scan.pdf
|
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|
209
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Mon Nov 12 11:25:58 2018 |
CBH | Expected Proton Energy Plots | Attached are the plots from MC simulations of the energies the detected particles are to have, with the top plot showing the dE-E plot and the bottom plot showing the total energy of the particles.
Please note the height of the peaks is not indicative of the counts expected and there is a low proton background expected between the entrance and exit window elastic peaks - see attached plot from Margerin (2014). |
| Attachment 1: ti_6.00um_2.8MeVu.png
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| Attachment 2: ti_3um_1.88MeVu.png
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| Attachment 3: al_12.5_2.8MeVu.png
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| Attachment 4: Margerin2014elog.png
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208
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Sat Nov 10 18:48:04 2018 |
dk | Travel schedule spreadsheet | https://docs.google.com/spreadsheets/d/1kvCWF13RMH83fssuN2_JLZXJwNL4rUGSEeKOWAIHUi0/edit#gid=0
or
https://tinyurl.com/isolde-44ti |
|
206
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Thu Nov 8 10:01:32 2018 |
CBH, DK | New Struts Installation | Struts arrived and were installed on Wednesday. The holes on one side of each of the struts to connect the wheels to were slightly too wide (11.5 cm vs 10.5 cm).
We've taken away part of the wheel holders and now they seem to be fitting in.
See attached photos:
1. First wheel with wide holder holes
2. Close up of work done
3. Second wheel with wide holder holes (on opposite corner of chamber)
4. Close up of work done
5. Wheel holder that was warped previously
6. Wheel holder that was warped previously, other perspective
7. What chamber looks like as of Wednesday afternoon
8. Lead sheets to make chamber a little bit more secure. |
| Attachment 1: 45572519_266919730834791_8330124242079186944_n.jpg
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| Attachment 2: 45627614_274796576508889_3500579035514142720_n.jpg
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| Attachment 3: 45542395_2324689780898515_4518857653308358656_n.jpg
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| Attachment 4: 45719087_191203315125224_4710983944323989504_n.jpg
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| Attachment 5: 45617345_565825447222151_5971399735796301824_n.jpg
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| Attachment 6: 45552489_494879210995766_5851766338049015808_n.jpg
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| Attachment 7: 45558766_318380375425399_6225540243555090432_n.jpg
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| Attachment 8: 45640419_2077469132528080_1562399133942153216_n.jpg
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205
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Wed Nov 7 14:27:45 2018 |
CBH, DK | Beam Plan for Miguel and Alberto (ISOLDE beam operators) |
Presently, we are scheduled for 9 days:
Nov 26-28 are three (3) days nominally for beam development
Nov 29-Dec 4 are six (6) days nominally for physics data taking
Dec 5-6: Shutdowns and important tests are planned by ISOLDE team
Dec 7th - power gets shut off to ISOLDE
==Run Plan==
1 day for ion source and 2.8 MeV/u beam dev
1 day for High E_cm statistics, using the 2.8 MeV/u beam with 6 um Ti foil. Stop when we are happy with the number of counts we've gotten.
1 day for 1.9 MeV/u energy beam dev (for use with mid E_cm)
1.5 days for Mid E_cm statistics, using the 1.9 MeV/u beam with 3um Ti foil. Stop when we are happy with the number of counts we've gotten.
(Switch back to 2.8 MeV/u beam, takes under 1 hour)
4.5 days for Low E_cm (as long as we can), using 2.8 MeV/u beam and 12.5 um Al foil.
Time must be allocated for He runs and background Ar / empty runs. Ratios of background to reaction runs can be decided depending on the number of counts we see, and also dependent on if we need RP to change gas in the cell.
If 1.9 MeV/u proves too challenging, we may consider to switch to 2.2 MeV/u instead, TBD during machine time.
Over the weekend of 1-2 Dec we cannot change the beam (no operators) nor our target (no RP), so it is crucial we start the low E_cm run before then.
If 1.9 MeV/u beam energy is slightly different that's fine, however it would be preferable if the 2.8 MeV/u beam energy was no lower, especially for the low E_cm run.
---Total 9 days---
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204
|
Mon Nov 5 16:26:34 2018 |
DK, CBH | Draft run plan | Please see https://elog.ph.ed.ac.uk/ISOLDE/203 for the E_cm calculations.
Presently, we are scheduled for 9 days:
Nov 26-28 are three (3) days nominally for beam development
Nov 29-Dec 4 are six (6) days nominally for physics data taking
It is not required to use all beam dev time at the beginning of the run, and we can take data in here with a beam we like before moving on. We do, however, have to care for the fact that over the weekend of 1-2 Dec that we cannot
change the beam (no operators) nor our target (no RP).
==Tentative Run Plan==
1 day for ion source and 2.8 MeV beam dev
1 day for High E_cm statistics, using the 6 um Ti foil
1 day for lower energy beam dev (for use with mid E_cm)
1.5 days for Mid E_cm statistics
(Switch back to 2.8 MeV/u beam, takes under 1 hour)
4.5 days for Low E_cm
---Total 9 days---
==Conditions==
The High E_cm and Low E_cm can not only share the same 2.8 MeV/u beam, which is considered a fairly easy beam since this is the nominal REX energy.
The Mid E_cm requires its own beam, and we have two conditions to choose from.
=High E_cm=
6um Ti, 2.8 MeV/u beam: Ecm=5.56-5.86 MeV
Pro: Beam energy is 'easy'
Pro: Can share E_beam with Low E_cm
=Mid E_cm=
2.5um HAVAR, 2.2 MeV beam: Ecm=4.76-5.06 MeV
Pro: Beam energy was delivered previously in 2012
Con: Physics protons show up below the elastic ones
3um Ti, 1.88 MeV/u beam: Ecm=4.27-4.58 MeV
Pro: Physics protons show up above the elastic ones
Pro: We already made the gas cell
Pro: Very similar E_cm to Margerin (but different conditions)
Con: Beam energy might be difficult to achieve (but possible)
=Low E_cm=
12.5 Al, 2.8 MeV/u beam: Ecm=3.41-3.72 MeV
Pro: We have the foil installed and tested
Pro: Beam is 'easy'
Pro: Can share E_beam with High E_cm |
|
203
|
Mon Nov 5 13:52:46 2018 |
CBH | CoM energies for 44Ti(alpha,p) reaction for different entrance windows and beam energies | Assuming 200 Torr helium target., elastic and reaction peaks do not have signifcant overlap unless stated:
3um Ti, 1.88 MeV/u beam: Ecm=4.27-4.58 MeV
3um Ti, 2.2 MeV/u beam: Ecm=5.50-5.80 MeV
12.5 Al, 2.8 MeV/u beam: Ecm=3.41-3.72 MeV
2.5 um HAVAR, 1.88 MeV/u beam: Ecm=3.54-3.85 MeV (peaks overlap)
2.5um HAVAR, 2.2 MeV beam: Ecm=4.76-5.06 MeV
6um Ti, 2.2 MeV/u beam: Ecm=3.15-3.47 MeV
6um Ti, 2.8 MeV/u beam: Ecm=5.56-5.86 MeV |
|
202
|
Fri Nov 2 17:01:16 2018 |
DK | Inventory going to CERN by easyJet | Conor will take:
==Black clicker case==
Foam packed, gas cell "b" with 12.5 um Al entrance window.
Target ladder with broken gas cell installed.
Daid will take:
==Backpack etc==
1 box with 4 quick-release gas tube hoses.
One bag with 6 teflon foot supports.
One small bag with gain screwdriver, 2 LEMO barrels, a bag of M2 screws from Japan, 1 gas cell saddle.
Gas cell feedthrogh, in bubble wrap
Gas cell vacuum bypass, including analog gauge dial.
One bag with extra O-rings and the acrylic window for the gas feedthrough itself
Silena Quad Bias Supply 7710
4 imperial spanners for Swagelok
2 Notebooks (common one and daid's one) |
|
201
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Wed Oct 31 16:01:33 2018 |
DK | Measuring foil thickness | A couple scans from my notes which may be useful.
One discusses alpha energy loss in nominal kitchen foil (~12 um) and also introduces my technique to calibrate a thin (~20 um) SSD. Sorry I forget which student's thesis it's from, either Sakaguchi of CNS Tokyo or perhaps Dahee Kim of
Ewha. They both did alpha measurements in 2015 as memory serves. It shows we could measure the thickness of the 12.5 um Al foil from Goodfellow with a standard source.
The second is just an email to a colleague about how I went about measuring some foils by weight. In that case, I want to get an idea on "how much aluminium might be evaporated on the mylar" and I got, I believe, a pretty sensible
answer. Of course, I *assumed* that the mylar was the nominal value. |
| Attachment 1: DOC_(4).PDF
|
-0.png "DOC_(4).PDF")
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| Attachment 2: DOC_(5).PDF
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-0.png "DOC_(5).PDF")
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200
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Wed Oct 31 14:50:36 2018 |
DK | Strut shipping info | http://www.dhl.com/en/express/tracking.html?AWB=1647723055&brand=DHL |
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199
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Thu Oct 25 13:25:16 2018 |
KG | Current gas cell status | (Wrapped up)
Cell b : 15um Al exit, 12.5um Al entrance. L/R ~0.4Torr/hr overnight (in vacuum)
Cell d : 15um Al exit, 3um Ti entrance. L/R ~ 0.8Torr/hr overnight (in vacuum)
(In testing)
Cell a : 15um Al exit, undecided which window will be used. At current epoxy on screw in joints for arms of cell. Testing in atmosphere to see if can reach adequate seal with this. |
|
198
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Wed Oct 10 10:57:33 2018 |
DK | Chamber wheel bolt spacing | From Ruchi's friend Rob. |
| Attachment 1: WhatsApp_Image_2018-10-10_at_09.14.43.jpeg
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197
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Tue Oct 9 14:25:54 2018 |
DK | Au foil request to STFC | http://npg.dl.ac.uk/TargetRequests/
https://www.technologysi.stfc.ac.uk/Pages/Target-frames.aspx
The standard frame is NSF CP type 3
Asked for 5x 100 ug/cm^2 Au. |
| Attachment 1: NPG_-_Online_Target_Request.pdf
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196
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Tue Oct 9 10:40:13 2018 |
DK | To-do Meeting Notes: July, August, September, October | Each month's notes are attached. Unfinished business naturally carries over to the next month.
This elog will be updated with new notes as necessary.
NB: These are the notes composed *prior* to the meeting, thus do not include any suggestions or corrections. |
| Attachment 1: 2018-07-todo.txt
|
ISOLDE 44Ti meeting notes
19 Jul 2018
==To be ordered==
*Entrance window foils, TBD
6um Ti from Goodfellow?
*Gas bottles at CERN - Helium and (likely) Argon.
ISOLDE might provide them, but they never did for N2 gas
Gas bottle will need a regulator (new or old one)
*Spanners to help repair water chiller leak.
We need the right imperial size (x2) for Swagelok.
Sizes? Email says 2x 9/16" but let's confirm
*High precision balance
No new updates. Do we really need it?
==To be repaired / replaced==
*Manual gate valve between SEC and Edinburgh chamber
Responsible: Peter, Daid, CERN Vacuum Team ...
The old one had a leak, likely from the O-ring
(Automated fast-acting gate valve could be required)
At some point, we may have to decide w/o input
Path of least resistance: fix existing one
(The old manual one should be around Peter's office...what's the beam pipe size?)
*Silena 7100 Quad Bias supply showed false readings during 59Cu exp.
Responsible: Daid, ...
Not yet repaired, Peter searches for manual
Alternative module was found and tagged for our use, needs testing
*ORTEC 474 TFA was returned to Edinburgh, owing to 10 V baseline shift
Responsible: Daid, ...
Useful for photodiode trigger. Take replacement back to CERN.
Tagged for repair.
Alternative module was found and tagged for our use, needs testing
*Teflon chamber feet stands
Responsible: Toby Fu
The original foot engraving diameter was too small, by mistake. The chamber could be shifted after alignment
But what are the design specifications?
EMAIL Mirco TO PICK THEM UP FOR US FROM ISOLDE
==Decisions==
*How shall we integrate the beam intensity delivered to target?
Gold foil w/ back-scattering to photodiode?
Needs foil, mounts for foil & photodiode. Other parts prepared.
Alpha scattering in SSDs is another option
*Photodiode degrader foil for isobaric check
Which Al foil(s) are prepared?
In Edinburgh or CERN?
What thickness is sufficient for 44Sc / 44Ti separation?
*Gas cell entrance window material / thickness
==Work==
*Decide beam energies
Responsible: Conor, Alex, Daid
1.2, 1.55, 1.88, 2.2 and 2.8 MeV/u were stated as available
*Model effect of beam spot size.
Responsible: Conor
~3 mm FWHM was achieved for 59Cu
*Gas cell
Responsible: Katie, Conor
Vacuum system is set up in Edinburgh, and He gas is available
He gas bottle needs a mounting support prior to use.
Everything is in Physics Stores
We can continue to investigate true leak rate, gas cell handling, assembly
Gas cell eventually needs to go to CERN.
Are we satisfied with the setup, or shall we get new parts?
(e.g. several new valves, ...)
*Chamber alignment
Responsible: Peter Black
Chamber is currently disconnected from the beam line.
Previously, we contacted the survey team to come assist.
*DAQ PC has any further issues to get on the network?
Responsible: Tom Davinson
(If PC is turned on, contact Ruchi as she would like some data.)
|
| Attachment 2: 2018-08-todo.txt
|
ISOLDE 44Ti meeting notes
28 Aug 2018
==To be ordered==
*Entrance window foils, TBD
3um Ti from Goodfellow? Is it light-tight?
*Gas bottles at CERN - Helium and (likely) Argon.
ISOLDE might provide them, but they never did for N2 gas
Gas bottle will need a regulator (new or old one)
*Spanners to help repair water chiller leak.
*FIRST CHECK VACUUM, CHILLER!*
NB: Might damage piping during re-assembly
We need the right imperial size (x2) for Swagelok.
Sizes? Email says 2x 9/16" but let's confirm
*High precision balance -- no need to buy
We are welcome to use the one in the chem lab on 2nd floor
Just wear a lab coat, and don't move other people's stuff
*PPE (Safety)
Boots and hardhats for new members
==To be repaired / replaced==
*Manual gate valve between SEC and Edinburgh chamber
Responsible: Peter, Daid, Conor, Katie, ...
The old one had a leak, we don't know where
It's on top of Peter's PC in his office
Students can test in Edinburgh...once leak is identified:
Fix ourselves or send to Lesker?
*Silena 7100 Quad Bias supply showed false readings during 59Cu exp.
Responsible: Daid, ...
Not yet repaired, Peter searches for manual
Alternative module was found and tagged for our use, needs testing
*ORTEC 474 TFA was returned to Edinburgh, owing to 10 V baseline shift
Responsible: Daid, ...
Useful for photodiode trigger. Take replacement back to CERN.
Tagged for repair.
Alternative module was found and tagged for our use, needs testing
*Take additional Pre-amp to CERN for Photodiode?
There are several in the Miniball cupboard...
*Teflon chamber feet stands
Responsible: Toby, Mirco, Daid
The original foot engraving diameter was too small, by mistake.
But what are the design specifications?
(Mirco picked these up for us, so they are in Germany?)
*Chamber stand wheel struts
Responsible: Peter, Daid, ...
Original ones are damaged at the ends, and also too long
Maria suggested 120 cm. We measured ~121 cm opening towards garage
To make less top-heavy, we can add a lower shelf and stack weight on it
==Decisions==
*How shall we integrate the beam intensity delivered to target?
Total integrated current, with efficiency-calibrated Ge detector
Talk to Liam?
Gold foil w/ back-scattering to photodiode?
Needs foil, mounts for foil & photodiode. Other parts prepared.
Alpha scattering in SSDs is another option
*Photodiode degrader foil for isobaric check
10, 15, 20 um Al are prepared at CERN, 2 blank frames in Edinburgh
What thickness is sufficient for 44Sc / 44Ti separation?
(...or other suspected contamination...)
*Gas cell entrance window material / thickness
*Target ladder setup
How many targets can fit & what should they be?
3 mm collimator
Photodiodes (takes two slots)
Viewing screen (?)
1 mm collimator (?)
Blank target frame (?)
==Work==
*Determine beam energies
Responsible: Conor, Alex, Daid, Karl, Alberto, ...
1.2, 1.55, 1.88, 2.2 and 2.8 MeV/u were stated as available
Karl mentioned the possibility of a beam test.
Previous beam was 44Ti+13. 40Ar may be a good pilot?
*Model effect of beam spot size -- still relevant?
Responsible: Conor
~3 mm FWHM was achieved for 59Cu
*Gas cell
Responsible: Katie, Conor
Vacuum system is set up in Edinburgh, and He gas is available
He gas bottle needs regulator, that's it.
Gas cell eventually needs to go to CERN.
Are we satisfied with the setup, or shall we get new parts?
(e.g. several new valves, ...)
*Chamber alignment
Responsible: Peter Black
Chamber is currently disconnected from the beam line.
Previously, we contacted the survey team to come assist.
Alignment parts are all at CERN.
*DAQ PC has any further issues to get on the network?
Responsible: Tom Davinson
(If PC is turned on, contact Ruchi as she would like some data.)
|
| Attachment 3: 2018-09-todo.txt
|
ISOLDE 44Ti meeting notes
27 Sept 2018
==To be ordered==
*Entrance window foils, TBD
4um Ti from Goodfellow?
9, 12 um Al from Goodfellow?
(Some existing queries regarding Havar, et al.)
*Gas bottles at CERN - Helium and (likely) Argon.
ISOLDE might provide them, but they never did for N2 gas
Gas bottle will need a regulator (new or old one)
*Spanners to help repair water chiller leak.
*FIRST CHECK VACUUM, CHILLER!*
NB: Might damage piping during re-assembly
We need the right imperial size (x2) for Swagelok.
Sizes? Email says 2x 9/16" but let's confirm
*High precision balance
Daid still needs to show Katie and Conor where the room is and what to do.
We are welcome to use the one in the chem lab on 2nd floor
Just wear a lab coat, and don't move other people's stuff
*PPE (Safety)
Boots and hardhats for new members
==To be repaired / replaced==
*Manual gate valve between SEC and Edinburgh chamber
Responsible: (Your name here)
Lesker quotes £123 for a repair kit. Check the elog. Does anyone volunteer?
New one has arrived - plan to leak check it
We need a KF-50 to ~ KF-25 (need to check) converter
*Photodiodes
Responsible: Daid
We have 3 at CERN, but no more in Edinburgh. Order more!
*Silena 7100 Quad Bias supply showed false readings during 59Cu exp.
Responsible: Katie, Daid, ...
Not yet repaired, Peter searches for manual
Alternative module was found and tagged for our use, needs testing
*ORTEC 474 TFA was returned to Edinburgh, owing to 10 V baseline shift
Responsible: Katie, Daid, ...
Useful for photodiode trigger. Take replacement back to CERN.
Tagged for repair.
Alternative module was found and tagged for our use, needs testing
*Take additional Pre-amp to CERN for Photodiode?
There are several in the Miniball cupboard...
*Teflon chamber feet stands
Responsible: Toby, Daid
The original foot engraving diameter was too small, by mistake.
They are at Daid's desk, with tracings of the proper size.
*Chamber stand wheel struts
Responsible: Peter, Daid, Conor, Ruchi
Original ones are damaged at the ends, and also too long
Maria suggested 120 cm. We measured ~121 cm opening towards garage
To make less top-heavy, we can add a lower shelf and stack weight on it
Need a measurement of bolt spacing, Ruchi has a friend who can help us.
==Decisions==
*How shall we integrate the beam intensity delivered to target?
Total integrated current, with efficiency-calibrated Ge detector
Talk to Liam?
Gold foil w/ back-scattering to photodiode?
Needs foil, mounts for foil & photodiode. Other parts prepared.
Daid should contact Paul Morrall
Alpha scattering in SSDs is most preferred.
*Photodiode degrader foil for isobaric check
10, 15, 20 um Al are prepared at CERN, 2 blank frames in Edinburgh
What thickness is sufficient for 44Sc / 44Ti separation?
(...or other suspected contamination...)
*Gas cell entrance window material / thickness
*Target ladder setup
How many targets can fit & what should they be?
3 mm collimator
Photodiodes (takes two slots)
Viewing screen (?)
1 mm collimator (?)
Blank target frame (?)
==Work==
*Determine beam energies
Responsible: Conor, Alex, Daid, Karl, Alberto, ...
1.2, 1.55, 1.88, 2.2 and 2.8 MeV/u were stated as available
Karl mentioned the possibility of a beam test.
Previous beam was 44Ti+13. 40Ar may be a good pilot?
WE AWAIT ALBERTO'S OPTICS CALCS & CRYO MODULE SCHEDULE.
*Model effect of beam spot size -- still relevant?
Responsible: Conor
~3 mm FWHM was achieved for 59Cu
*Gas cell
Responsible: Katie, Conor
Vacuum system is set up in Edinburgh, and He gas is available
Gas cell eventually needs to go to CERN.
New needle valves and some piping for the gas flow control.
*Chamber alignment
Responsible: Peter Black
Chamber is currently disconnected from the beam line.
Previously, we contacted the survey team to come assist.
Alignment parts are all at CERN.
*DAQ PC has any further issues to get on the network?
Responsible: Tom Davinson
(If PC is turned on, contact Ruchi as she would like some data.)
|
| Attachment 4: 2018-10-todo.txt
|
ISOLDE 44Ti meeting notes
09 Oct 2018
==To be ordered==
*Windows
Done
*Gas bottles at CERN - Helium and (likely) Argon.
Gas bottle will need a regulator (new or old one)
Emailed Karl to inquire. N2 necessary?
*Spanners to help repair water chiller leak.
Done
*PPE (Safety)
Boots and hardhats for new members
*New valves for gas flow system
*Gas cell stands for each gas cell
Order was submitted.
*Photodiodes
We have 3 at CERN, but no more in Edinburgh. Order more!
*Au foils
==To be repaired / replaced==
*Manual gate valve between SEC and Edinburgh chamber
Responsible: (Your name here)
Lesker quotes £123 for a repair kit. Do we give up?
New one has arrived - plan to leak check it
Converter flange to check w/ He sniffer ordered, not arrived.
*Silena 7100 Quad Bias supply showed false readings during 59Cu exp.
Responsible: Katie, Daid, ...
Not yet repaired, Peter searches for manual
Alternative module was found and tagged for our use, needs testing
*ORTEC 474 TFA was returned to Edinburgh, owing to 10 V baseline shift
Responsible: Katie, Daid, ...
Useful for photodiode trigger. Take replacement back to CERN.
Tagged for repair.
Alternative module was found and tagged for our use, needs testing
*Take additional Pre-amp to CERN for Photodiode?
There are several in the Miniball cupboard...
*Teflon chamber feet stands
Done
*Chamber stand wheel struts
Responsible: Peter, Daid, Conor, Ruchi
Original ones are damaged at the ends, and also too long
Maria suggested 120 cm. We measured ~121 cm opening towards garage
To make less top-heavy, we can add a lower shelf and stack weight on it
Need a measurement of bolt spacing, Ruchi has a friend who can help us.
==Decisions==
*How shall we integrate the beam intensity delivered to target?
Total integrated current, with efficiency-calibrated Ge detector
Talk to Liam?
Gold foil w/ back-scattering to photodiode?
Needs foil, mounts for foil & photodiode. Other parts prepared.
Daid should contact Paul Morrall
Alpha scattering in SSDs is most preferred.
*Photodiode degrader foil for isobaric check
10, 15, 20 um Al are prepared at CERN, 2 blank frames in Edinburgh
What thickness is sufficient for 44Sc / 44Ti separation?
(...or other suspected contamination...)
Need to know the beam energies! This is quick work.
*Target ladder setup
How many targets can fit & what should they be?
3 mm collimator
Photodiodes (takes two slots)
Viewing screen (?)
1 mm collimator (?)
Blank target frame (?)
==Work==
*Gas cell
Responsible: Katie, Conor
Vacuum system is set up in Edinburgh, and He gas is available
Gas cell eventually needs to go to CERN.
New needle valves and some piping for the gas flow control.
Many windows, washers, etc are now ready to go!
**Window material / thickness
9, 12.5 um Al arrived.
3 um Ti arrived, some holes but maybe serviceable
6 um Ti had order mixup
We can get Havar in 2 weeks privately
*Chamber alignment
Responsible: Peter Black
Chamber is currently disconnected from the beam line.
Previously, we contacted the survey team to come assist.
Alignment parts are all at CERN.
*DAQ PC has any further issues to get on the network?
Responsible: Tom Davinson
(If PC is turned on, contact Ruchi as she would like some data.)
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| Attachment 5: 2018-10-23-todo.txt
|
ISOLDE 44Ti meeting notes
23 Oct 2018
==To be ordered==
*Gas bottles at CERN - Helium and (likely) Argon.
Gas bottles for He, Ar can be supplied by CERN
N2 was also approved, but bear in mind volume required
*Spanners to help repair water chiller leak.
Ordered but did they arrive?
*PPE (Safety)
Boots and hardhats for new members
*New valves for gas flow system
*Gas cell stands for each gas cell
Order was submitted.
*Photodiodes
Order of 10 to arrive 7 Nov
*Au foils
Order placed with Paul at STFC
==To be repaired / replaced==
*Manual gate valve between SEC and Edinburgh chamber
New one has arrived - plan to leak check it
Converter flange to check w/ He sniffer ordered arrived
Awaiting clamps that were ordererd
Repair kit was ordered.
*Silena 7100 Quad Bias supply showed false readings during 59Cu exp.
Responsible: Katie, Daid, ...
Not yet repaired, Peter searches for manual
Alternative module was found and tagged for our use, needs testing
*ORTEC 474 TFA was returned to Edinburgh, owing to 10 V baseline shift
Responsible: Katie, Daid, ...
Useful for photodiode trigger. Take replacement back to CERN.
Tagged for repair.
Alternative module was found and tagged for our use, needs testing
*Take additional Pre-amp to CERN for Photodiode?
There are several in the Miniball cupboard...
*Teflon chamber feet stands - done
*Chamber stand wheel struts
Responsible: Peter, Daid
We have the necessary preparations, we await Peter.
We will use 118 cm since garage direction is ~121 cm
==Decisions==
*How shall we integrate the beam intensity delivered to target?
Total integrated current, with efficiency-calibrated Ge detector
Gold foil w/ back-scattering to photodiode?
Needs foil, mounts for foil & photodiode. Other parts prepared.
Alpha scattering in SSDs is most preferred.
*Photodiode degrader foil for isobaric check
10, 15, 20 um Al are prepared at CERN, 2 blank frames in Edinburgh
What thickness is sufficient for 44Sc / 44Ti separation?
(...or other suspected contamination...)
Need to know the beam energies! This is quick work.
*Target ladder setup -- IMPORTANT
How many targets can fit & what should they be?
3 mm collimator
Photodiodes (takes two slots)
Viewing screen (?)
1 mm collimator (?)
Blank target frame (?)
==Work==
*Gas cell
Responsible: Katie, Conor
Gas cell eventually needs to go to CERN.
New needle valves and some piping for the gas flow control.
**Window material / thickness
9, 12.5 um Al
3, 6 um Ti
2.5 um Havar
3 um Ti, 12.5 um Al are installed with leak rates < 1 Torr/hr.
*Chamber alignment
Responsible: Peter Black
Previously, we contacted the survey team to come assist.
Alignment parts are all at CERN.
*DAQ PC has any further issues to get on the network?
Responsible: Tom Davinson
(If PC is turned on, contact Ruchi as she would like some data.)
|
| Attachment 6: 2018-10-31-todo.txt
|
ISOLDE 44Ti meeting notes
31 Oct 2018
==ENSAR2 status==
We have some information from people, but not enough.
When is the deadline?
==Meetings at CERN next week==
*Beam energy w/ Alberto
*Crane use w/ Olof
*Survey team w/ Peter Skypes
*RILIS people for laser ideas
*Find Liam if we need the alpha source
==To be ordered==
*PPE (Safety)
Boots and hardhats for new members
*New valves for gas flow system
Done. Peter will help weld it up later.
*Gas cell stands for each gas cell
Order is completed. We are awaiting M2 screws now.
*Photodiodes
Order of 10 to arrive 7 Nov
*Au foils
Paul at STFC confirmed the order.
==To be repaired / replaced==
*Manual gate valve between SEC and Edinburgh chamber
New one has arrived - plan to leak check it
Awaiting clamps that were ordererd
Repair kit was ordered. Maybe Katie can enjoy this.
*Silena 7100 Quad Bias supply showed false readings during 59Cu exp.
Responsible: Katie, Daid, ...
Not yet repaired, Peter searches for manual
Alternative module was found and tagged for our use, needs testing
*ORTEC 474 TFA was returned to Edinburgh, owing to 10 V baseline shift
Responsible: Katie, Daid, ...
Useful for photodiode trigger. Take replacement back to CERN.
Tagged for repair.
Alternative module was found and tagged for our use, needs testing
*Take additional Pre-amp to CERN for Photodiode?
There are several in the Miniball cupboard...
*Chamber stand wheel struts
These were mailed to CERN attn: Karl Johnston. He confirmed with DHL.
==Decisions==
*How shall we integrate the beam intensity delivered to target?
Total integrated current, with efficiency-calibrated Ge detector
Gold foil w/ back-scattering to photodiode?
Needs foil, mounts for foil & photodiode. Other parts prepared.
Alpha scattering in SSDs is most preferred.
*Photodiode degrader foil for isobaric check
10, 15, 20 um Al are prepared at CERN, 2 blank frames in Edinburgh
What thickness is sufficient for 44Sc / 44Ti separation?
(...or other suspected contamination...)
Need to know the beam energies! This is quick work.
*Target ladder setup -- IMPORTANT
Peter has made a jig for us, it looks promising.
How many targets can fit & what should they be?
3 mm collimator
Photodiodes (takes two slots)
Viewing screen (?)
1 mm collimator (?)
Blank target frame (?)
==Work==
*Gas cell
Responsible: Katie, Conor
Gas cell eventually needs to go to CERN.
**Window material / thickness
9, 12.5 um Al
3, 6 um Ti
2.5 um Havar
3 um Ti, 12.5 um Al are installed with leak rates < 1 Torr/hr.
*Chamber alignment
Responsible: Peter Black
Previously, we contacted the survey team to come assist.
We'll have a chat next week. Peter can join w/ Skype.
Alignment parts are all at CERN, _except a gas cell prism holder_
*DAQ PC has any further issues to get on the network?
Responsible: Daid, Tom Davinson
(If PC is turned on, contact Ruchi as she would like some data.)
*Cobbling things together at CERN next week
Responsible: Daid, Conor, ...
What should we take?
Rainbows and unicorns.
What should we bring back?
Some chocolate, maybe
==Simulation code==
Responsible: Daid, Alex, Conor, ...
Sounds like some people are reinventing the wheel in Canada.
What's the best way to collaborate and share? Probably git.
|
|
195
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Mon Oct 8 17:02:47 2018 |
DK | Target ladder photo from previous experiment | From Alex, attached. |
| Attachment 1: IMG_1274.jpg
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194
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Mon Oct 8 12:07:18 2018 |
DK | Gas cell check with He sniffer | Notes from an email:
Tested the chamber with the leak checker. We got 3.7 x 10^-6 mbar
liters / sec. I estimate the chamber's leak rate around 1 mbar / 4
hours or so, and I randomly guess its volume is 100 ml. If I smash
those numbers I get ~10^-5 mbar liters / sec which is a similar order.
I turned off the pumps for the weekend but left the He gas in the
cell. |
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193
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Mon Oct 8 12:05:25 2018 |
DK, PB | Gas cell supports | These are used to connect the gas cell to the target ladder. We only had the one, and it would be more convenient if each gas cell has its own, to avoid swapping them back and forth.
Drawings attached. |
| Attachment 1: gas_cell_support.PDF
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192
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Thu Oct 4 13:07:33 2018 |
KG | Schematics for gas-cell tests | in_atmosphere.png : schematic for testing gas-cell in atmosphere
Feedthrough.png : feed through schematic for testing vacuum chamber and gas cell |
| Attachment 1: in_atmosphere.png
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| Attachment 2: Feedthrough.png
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191
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Thu Sep 27 12:41:06 2018 |
DK | Strut measurement request | For posterity
==========
Hi Ruchi,
Could you ask a friend for me to make a measurement with a ruler? I
attach a PDF you may send along. It shows a basic picture of the blue
chamber stand, a picture of the broken part, and an arrow with what I
need to know. Second page of PDF shows what kind of signage should be
on the items of interest.
The steel wheel mounts have two bolts which connect them to the
struts. We want to know the spacing between the *center* of one bolt
to the second bolt, so that we know the spacing to drill into the new
struts. There are 4 such steel wheel mounts, two on a pair of struts.
My guess is the value is something around 12 cm give or take. But I
need a precise value and I forgot to measure it in August.
The chamber stand is located to the beam left of XT01 (Miniball) in
ISOLDE hall, or it was ...
Cheers,
daid |
| Attachment 1: edinburgh-chamber-query.pdf
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