| ID |
Date |
Author |
Subject |
|
154
|
Tue Nov 14 07:04:13 2017 |
DK, MD, CL | Run 140 | Header: Protons are back, continue 3.5 MeV/u on CH2
Ender:
====================================================
Run number : 140
Date : 14 / 11 / 2017
Start time : 08:05:36
Stop time : 08:29:06
Trigger rate (MIDAS) : 3
Blocks written : 103
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Run Scalers (approx rates)
0- Ungated : 2
1- Gated : 2
2- dE : 48k
3- E : 3
4- HI : 55
5- Pulser : 1
6- Clock : 969
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Beam energy (MeV/u) : 3.5 MeV/u (nominal)
Beam intensity (epA) :
Target : CH2_33+10+01
Ladder position (mm) : 97.61
HI Degrader foil (um) : 10 um
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
del_E voltage (V) : -40
del_E leakage (uA) : 0.79
E voltage (V) : -350
E leakage (uA) : 2.09
E_hi voltage (V) : -14
E_hi leakage (uA) : 3.22
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
PA power (Up, positive) (A) : 1.55
PA power (Up, negative) (A) : 0.55
PA power (Down, positive) (A) : 0.8
PA power (Down, negative) (A) : 0.26
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Pressure (IMG1) (mbar) : 6.5 x 10^-6
Pressure (old gauge) (mbar) : 1.8 x 10^-5
Pressure (SEC) (mbar) : 4.2 x 10^-6
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Temp (Chiller) deg : -10.0
Temp (chamber) deg : +6.2
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Comments:
==================================================== |
|
13
|
Wed Aug 16 15:30:04 2017 |
DK, MD | Shipping Inventory | ==BOX A== 59kg - 600mm x 600mm x 800mm
VME crate, with power cable
7 Silena ADCs
1 S9418 ACQ controller
2 CAEN V767 TDC
CAEN 560
MVME 24XX Motorola crate Controller
26 ribbon cables
12 for analog
12 for discrim
2 extra
==BOX B== 49kg - 600mm x 600mm x 800mm
RAL amp crate (full with modules)
Ribbon cables for patch
1 NIM Fan
2 Cable patch boxes
==BOX C== 40kg - 600mm x 600mm x 800mm
RAP amp crate (only 5 modules)
Ribbon cables for patch
1 NIM Fan
2 Cable patch boxes
==BOX D== 29kg - 450mm x 450mm x 450mm
Scrolling pump
Backflow interlock
==BOX E==
Target ladder and components
==BOX F== 92kg - 600mm x 600mm x 800mm
Large TMP
Small TMP
2 TMP controllers
2 Preamp feedthrough
Bolts and washers
2 O-Rings + 1 spare
2 Preamp power supplies
TMP bolts (large and small)
20x IEC leads
2x Swiss to UK leads
Box E
Box G
2x spare HVBNC cables
middle foot sections of blue frame
2x vacuum hoses
==BOX G==
2 inverse magnetron ion gauges
1 thermocouple vacuum gauge
==BOX H==
Multi gauge reader
==Box I==
Chiller & Pipes
Chamber, sliding mount
Box H (gauge reader)
Box E (target ladder)
4 Long ribbon cables
3 Power Bars
==BOX J==
6 feet for chamber stand
All bolts for chamber stand
Spacers
==BOX K==
Valve for TP 1 & 2
vacuum clamps
==BOX L==
Upstream beamline pipe
Gate valve, nipple, adaptor flange to SEC
N2 pipe with valve
Mechanical pressure gauge and "plus" type connector
Swagelok nylon and brasss ferrels for gas line / coolant piping
==BOX M==
Bolts, nuts and spacers for chamber end flanges and center
==BOX N=
Blanking kindey plate
bellows
bellow cage
o-ring for ribbon feedthroughs
spare straight and right angle swagelok fittings
TMP/gauge mounting pipe
Faraday cup
dummy detectors
thermocouple cbable
cctv camera power lead
BNC to Lemo
Lemo to Ribbon box
lemo cables
20 ~1 cm spacers for SSD mounting
9 ~2 cm spacers for SSD mounting
==BOX O== 84kg - 600mm x 600mm x 800mm
Box J, K. L. M, N, S, T
Old inv magnetron vac gauge meter
thin green polymer tubing (gas lines, cooling system)
current integrator for FC
3 large O-Rings for chamber (spare)
thermometer
short bits of blue frame
braces off blue frame
16way BNC multicore
==BOX P== 83kg - 600mm x 600mm x 800mm
Camac crate
5x Logic Shaped Outputs (CAMAC)
2x CAMAC / VME converter
1 LeCroy 622 Quad Logic (NIM)
1 Ortec 566 TAC (NIM)
1 Lecroy 222 dual GDG
1 Ortec 459 bias supply
NIM crate
1 BNC PB-5 digital pulse generator
1 BNC PB-4 analog pulse generator
1 Analog ratemeter 4678
1 ECL-NIM-ECL EC 1601
1 Silena Quad Bias Supply 7710
2 LeCroy 419A Logic FI/FO
==BOX Q== 52kg - 600mm x 600mm x 800mm
Sun Microsystems Tower
==BOX R== 37kg - 600mm x 450mm x 700mm
Wheels for frame
Tools
Safety boots and helmets-
-Daid
-Toby
-Mirco
-Claudia
==BOX S==
2 S2 1000 um SSDs
==BOX T==
3 S2 75 um SSDs
==Box U==
1 green gremlin
2 pink unicorns
==Bundle 1== 16kg - 1600mm x 400mm x 150mm
==Bundle 2== 8kg - 700mm x 150mm x 150mm
==Bundle 3== 15kg - 1400mm x 300mm x 150mm
==Bundle 4== 12kg - 650mm x 1150mm x 100mm
==Bundle 5== 23kg = 2300mm x 150mm x 150mm
Number of Packages: 10 Boxes, 5 Bundles
NET WEIGHT: ~800kg |
|
150
|
Tue Nov 14 02:16:10 2017 |
DK, MD | Run 135 | Header: Back to CH2 with 3.5 MeV/u
Ender:
====================================================
Run number : 135
Date : 14 / 11 / 2017
Start time : 03:16:18
Stop time : 05:16:51
Trigger rate (MIDAS) : 5
Blocks written : 562
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Run Scalers (approx rates)
0- Ungated : 6
1- Gated : 5
2- dE : 59k
3- E : 5
4- HI : 787
5- Pulser : 2
6- Clock : 969
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Beam energy (MeV/u) : 3.5 MeV/u (nominal)
Beam intensity (epA) : ~1.6
Target : CH2_33_10_01
Ladder position (mm) : 97.61
HI Degrader foil (um) : 10 um Al
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
del_E voltage (V) : -40
del_E leakage (uA) : 0.80
E voltage (V) : -350
E leakage (uA) : 2.08
E_hi voltage (V) : -14
E_hi leakage (uA) : 3.09
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
PA power (Up, positive) (A) : 1.55
PA power (Up, negative) (A) : 0.58
PA power (Down, positive) (A) : 0.79
PA power (Down, negative) (A) : 0.26
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Pressure (IMG1) (mbar) : 6.4 x 10^-6
Pressure (old gauge) (mbar) : 1.6 x 10^-5
Pressure (SEC) (mbar) : 4.1 x 10^-6
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Temp (Chiller) deg : -9.9
Temp (chamber) deg : +6.1
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Comments:
==================================================== |
|
153
|
Tue Nov 14 06:22:29 2017 |
DK, MD | Run 139 | Header: Continue at 3.5 MeV/u w/ CH2
Ender: No protons are coming to ISOGPS
====================================================
Run number : 139
Date : 14 / 11 / 2017
Start time : 07:17:32
Stop time : 08:00:39
Trigger rate (MIDAS) : 6
Blocks written : 196
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Run Scalers (approx rates)
0- Ungated : 5
1- Gated : 5
2- dE : 59k
3- E : 6
4- HI : 670
5- Pulser : 1
6- Clock : 969
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Beam energy (MeV/u) : 3.5 MeV/u (nominal)
Beam intensity (epA) : 1.5
Target : CH2_33+10+01
Ladder position (mm) : 97.61
HI Degrader foil (um) : 10 um
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
del_E voltage (V) : -40
del_E leakage (uA) : 0.795
E voltage (V) : -350
E leakage (uA) : 2.08
E_hi voltage (V) : -14
E_hi leakage (uA) : 3.20
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
PA power (Up, positive) (A) : 1.55
PA power (Up, negative) (A) : 0.55
PA power (Down, positive) (A) : 0.8
PA power (Down, negative) (A) : 0.25
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Pressure (IMG1) (mbar) : 6.4 x 10^-6
Pressure (old gauge) (mbar) : 1.25 x 10^-5
Pressure (SEC) (mbar) : 4.2 x 10^-6
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Temp (Chiller) deg : -10.0
Temp (chamber) deg : 6.0
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Comments: We notice the rates are wrong about 8:00. It seems the beam stopped about 7:55 or later.
==================================================== |
|
165
|
Wed Nov 15 01:02:59 2017 |
DK, MD | Run 151 | Header: Continue with 5.0 MeV/
Ender:
====================================================
Run number : 151
Date : 15 / 11 / 2017
Start time : 02:03:26
Stop time : 04:19:06
Trigger rate (MIDAS) : 5
Blocks written : 577
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Run Scalers (approx rates)
0- Ungated : 5
1- Gated : 4
2- dE : 62k
3- E : 128
4- HI : 495
5- Pulser : 1
6- Clock : 969
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Beam energy (MeV/u) : 5.0 MeV/u (nominal)
Beam intensity (epA) : 2.25
Target : CH2_33+10+01
Ladder position (mm) : 97.61
HI Degrader foil (um) : 15 um Al
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
del_E voltage (V) : -40
del_E leakage (uA) : 0.66
E voltage (V) : -350
E leakage (uA) : 2.065
E_hi voltage (V) : -14
E_hi leakage (uA) : 3.265
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
PA power (Up, positive) (A) : 1.55
PA power (Up, negative) (A) : 0.59
PA power (Down, positive) (A) : 0.8
PA power (Down, negative) (A) : 0.28
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Pressure (IMG1) (mbar) : 8.2 x 10^-6
Pressure (old gauge) (mbar) : 2.2 x 10^-5
Pressure (SEC) (mbar) : 5.0 x 10^-6
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Temp (Chiller) deg : -9.9
Temp (chamber) deg : 5.8
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Comments: Proton beam intensity dropped briefly, from 2:50 to 3:00 AM (drop was about ~5 min). Normal value was 1.5 uA, dropped down to 0.5 uA before recovered.
==================================================== |
|
124
|
Sun Nov 12 15:34:39 2017 |
DK, MB | Run 110 | Header: Carbon target at 4.4 MeV/u
Ender: End
====================================================
Run number : 110
Date : 12/11/2017
Start time : 16:35:36
Stop time : 18:37:21
Trigger rate (MIDAS) : 3
Blocks written : 515
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Run Scalers (approx rates)
0- Ungated : 4
1- Gated : 4
2- dE : 132k
3- E : 30
4- HI : 449
5- Pulser : 1
6- Clock : 970
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Beam energy (MeV/u) : 4.4 MeV/u
Beam intensity (epA) : 0.5 to 2.0 (median around 1)
Target : C_25
Ladder position (mm) : 112.78
HI Degrader foil (um) : 10 um Al
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
del_E voltage (V) : -40
del_E leakage (uA) : 0.77
E voltage (V) : -350
E leakage (uA) : 2.10
E_hi voltage (V) : -14
E_hi leakage (uA) : 2.75
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
PA power (Up, positive) (A) : 1.55
PA power (Up, negative) (A) : 0.55
PA power (Down, positive) (A) : 0.8
PA power (Down, negative) (A) : 0.25
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Pressure (IMG1) (mbar) : 6.1 x 10^-6
Pressure (old gauge) (mbar) : 1.8 x 10^-5
Pressure (SEC) (mbar) : 3.4 x 10^-6
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Temp (Chiller) deg : -10.0
Temp (chamber) deg : 6.2
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Comments:
==================================================== |
|
127
|
Sun Nov 12 21:27:23 2017 |
DK, MB | Run 113 | Header: Continue 4.4 MeV/u on CH2
Ender: End
====================================================
Run number : 113
Date : 12 / 11 / 2017
Start time : 22:27
Stop time : 00.51.46
Trigger rate (MIDAS) : 4
Blocks written : 613
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Run Scalers (approx rates)
0- Ungated : 4
1- Gated : 4
2- dE : 142k
3- E : 21
4- HI : 570
5- Pulser : 1
6- Clock : 977
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Beam energy (MeV/u) : 4.4 MeV / u (nominal)
Beam intensity (epA) : 1.5
Target : CH2_16
Ladder position (mm) : 127.95
HI Degrader foil (um) : 10 um Al
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
del_E voltage (V) : -40
del_E leakage (uA) : 0.77
E voltage (V) : -350
E leakage (uA) : 2.10
E_hi voltage (V) : -14
E_hi leakage (uA) : 2.79
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
PA power (Up, positive) (A) : 1.55
PA power (Up, negative) (A) : 0.6
PA power (Down, positive) (A) : 0.8
PA power (Down, negative) (A) : 0.3
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Pressure (IMG1) (mbar) : 6.3 x 10^-6
Pressure (old gauge) (mbar) : 1.8 x 10^-5
Pressure (SEC) (mbar) : 3.7 x 10^-6
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Temp (Chiller) deg : -9.9
Temp (chamber) deg : 6.0
覧覧覧覧覧覧覧覧覧覧覧覧覧覧覧
Comments:
==================================================== |
|
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 |
|
2
|
Fri Jan 27 11:33:10 2017 |
DK | Testing email server | Tinkering with configs for SYMPA email server to see if the elog info is sent to the mailing list or not
Normally it is sent by ELog@jast.ph.ed.ac.uk and I changed it to "restricted to local domain and subscribers" from "restricted to subscribers" under Edit List Config > Who can
send messages. |
|
6
|
Wed Apr 26 12:10:04 2017 |
DK | Testing email header | I asked IT about putting the elog name into the email subject line (useful for those of us subscribed to more than one elog). They said they enabled it for ISOLDE. Let's test
to see!
Another test (June 1st) |
|
10
|
Thu Jun 1 13:09:38 2017 |
DK | Testing email header, part II | Checking some server settings for the elog system regarding the email notification.
And testing updating an elog.
Testing again... |
|
11
|
Wed Aug 16 12:53:43 2017 |
DK | To do / missing | Photodiode
Electronics
Foil mount (12 um Al seems okay, but check more carefully)
Beam viewing material
Previous order very delayed
==TDC data==
*Check for remaining LeCroy 622 quad logic unit
ask Stephan http://www.ph.ed.ac.uk/people/stephan-eisenhardt
*Conversion cables for CAEN V767 TDC input
*RAL ADC output split of ribbon cable
==SSDs==
How to protect the S2s during beam tuning?
Can the ISOLDE operators easily restore beam optics settings or not?
(Determines if we can do all the beam tuning at once or if we have to separate them)
Controlable iris aka Star Wars door -- contact Simon Fox at York
Dynamic range of the preamps is only maximum 200 MeV, so we need a foil to degrade the heavy ion energy
Gain resistors for up to three dynamic range settings |
|
Draft
|
Wed Aug 16 15:29:57 2017 |
DK | Shipping Inventory | ==BOX A==
VME crate
26 ribbon cables
12 for analog
12 for discrim
2 extra
==BOX B==
RAL amp crate (full with modules)
Ribbon cables for patch
1 NIM Fan
2 Cable patch boxes
==BOX C==
RAP amp crate (only 5 modules)
Ribbon cables for patch
1 NIM Fan
2 Cable patch boxes
==BOX D==
Scrolling pump
Backflow interlock |
|
171
|
Wed Nov 15 14:18:30 2017 |
DK | Issues and problems encountered | Objective log on perceived issues. (As a benchmark, I enumerated 17 such issues on my previous RIB experiment March 2017.)
In no particular order...
1) Sun PC:
Cannot properly connect to internet, disallowing SSH access
Important for external monitoring
Better to control DAQ from ISOLDE data room in case of ISOLDE issues
Connecting to CERN network screwed with DNS, borking local DNS hence DAQ
Double mouse clicking often skipped run numbers
2) Vacuum:
Barely acceptable, and manual gate valve leaked!
Keep in mind, interlock system showed higher than true values
44Ti requires a gas cell and vacuum load may increase considerably
(Chamber needs gas-feedthrough lines and gas-flow control system)
Cooling lines are known to leak badly
3) SSDs:
HI detector leak current increased considerably during the run
Noisy n-n sides
To be discussed
4) Scalers
Scalers were made with noisy n-n sides, making interpretation confusing
We lacked LEMO cables to provided summed p-n scalers
5) Decay halflife
A simple handheld monitor turned out to be effective for 59Cu
That won't work for 44Ti ...
6) Unused aparatus should be minimized
(Time & money)
Photodiodes
ZnS screen / camera
Manual gate valve (see above)
7) Shift plan/schedule
No definitive plan -- need pre exp. meeting
Shift schedule became arbitrary, w/ several flip/flops
RP requirements limited access to chamber
8) Shift work
Run log was made with short notice
Style may not be ideal for data analyst
Copy/paste errors et al were observed
Deadtime log was suggested to be added
(Other issues might be circumvented w/ SSH access to Sun PC)
9) Purpose
Detail & motivation of exp. was not clear to all members
10) Faraday Cup
Data taken by TIMBER system, which is better to integrate w/ our DAQ
Strange non-physical fluctuations which we like ISOLDE team to resolve
Timestamp differences of Sun PC and TIMBER PC?
11) Silena HV module
Module was found to falsely report applied bias
12) Alpha calibration / pulser walkthrough
Lacking prior to experiment owing to manpower and technical difficulties
13) Sort codes and simulations
It was common to discuss received vs. expected data w/o fast clear answer |
|
186
|
Thu Aug 23 18:23:27 2018 |
DK | Where to find (our) stuff at ISOLDE | =Overview=
Shoes, hard hats, 'underpants', spiders, etc: Cardboard box "R", Garage entry of ISOLDE, shelf opposite turnstyle.
Electronics racks: between XT02 and XT03 beam lines. Atop racks are power strips, box of ribbon cables
Chamber, stand: beam left of XT01.
Wooden chamber shipping box: MIA?!
5 SSDs, 3 photodiodes, (10, 15, 20 um Al degraders for photodiodes), heavy ion degrader foils of 59Cu: MINIBALL fragile cabi
All others: Building 275, in the 7 metal boxes.
=New inventory after moving chamber=
Summary:
1 A Toolbag etc, packed aug 2018 - has Faraday cup cable in pocket
2 F Packings only
3 O extra ribbon cables, helmet, TV power supply (look here as last resort)
4 C Packed Aug 2018, see below. Small TMP, vacuum gauge readouts, etc
5 B Large TMP, packed august 2018
6 P vacuum tubes, chamber innards, irises, bolts and such
7 Q tom's favorite PC and components
==Box A==
Toolbag
has faraday cup cable, inner pocket
SEC flange to connect our beam line !!
bolts to fix chamber to stand, in a bag in outer pocket
1 photodiode preamp, outer pocket.
fan, peter's idea how to cool small TMP
==Box B==
Large TMP
Connectors and cut allen key for chamber mounting -- daid's pocket, intending to tape to inside top of box
(nothing else, just these item)
==Box C==
Large TMP controller
Small TMP, with valve attached at exit and C clamp on top to connect to chamber.
Small TMP controller
Both digital vacuum gauge readouts
===unlabeled subbox of C (quickly sealed w/ blue tape)===
3 power supply cables (1 w/ swiss converter)
2 SHV cables (for inv. magnetron gauges)
1 funky cable for other vacuum gauge
1 bag of unknown origin pre-existing in box:
1 fuse
1 ferrite clamp
1 bumper foot
===2nd unlabelled subbox===
handed to me by someone, from near XT03.
appears to be related w/ chamber internal video camera...LEDs, wires, RCA connectors, etc
==Box P==
(added vacuum tubes)
Attached: Notices posted with much enthusiasm. |
|
187
|
Thu Aug 23 18:57:15 2018 |
DK | What daid is taking from ISOLDE to Edinburgh | 1 bolt for chamber stand structure, for reference for new struts.
2 target ladders: spare 1/2 style ladder, ladder from inside chamber, including the bits to connect to actuator
2 dual photodiode frames for degraders. (Existing at CERN are 3 more, with 10, 15, and 20 um Al foil over one side, respectively)
Acrylic window from beam upstream (front) top of chamber, where gas feedthrough is meant to go. |
|
188
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Thu Aug 30 15:14:50 2018 |
DK | Gate Valve | Some notes on the broken gate valve that should go between SEC and our chamber at XT03. |
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189
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Mon Sep 24 14:44:48 2018 |
DK | ISOLDE vacuum schematic | Attached. PDF is produced with Gnome Dia -- source file attached as well.
Bellow near GV is not depicted. None of SEC components are depicted (as they would be irrelevant with the GV in place).
Need to make inset for gas flow system. |
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191
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Thu Sep 27 12:41:06 2018 |
DK | Strut measurement request | For posterity
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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 |
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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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