1) DAQ

We have 192 channels to DAQ working. Mirco will test the silicon detectors with an alpha source in the next 2 weeks. 

2) Vacuum

In the moment we reach 6E-6. There are still 2 tiny leaks. There will be an extra turbo for the upstream beam line which should improve the vacuum for ISOLDE purposes. 
We need to check how fast we can pump down as might need to open the chamber between tuning and beam time (detectors need to be protected from tune beam).

3) Alignment

Alignment of the sample positions can be done here (Mirco/Peter). Claudia will contact Karl about a survey team for alignment at ISOLDE. Then we can talk to them directly.

4) Shipping

We aim to ship the setup to CERN by the end of March. We will try to go over to CERN for initial setup middle of April (to be confirmed with Karl)

5) Equipment needed from CERN

Claudia will ask Karl about availability of a CAMAC crate and 2 NIM bins. 

6) Safety

Peter will order safety boots and hard hats. 
Those who do not have ISOLDE access need to attend the ISOLDE radiation protection course. 

7) Availability for Preparations

Tom not here: 25 March - 3 April, 25 April - middle June
Daid not here: until middle June ?

8) Samples CH2, CD2

Paul has new batch and should send alpha spectra soon.

POINTS FOR DISCUSSION

• Email sent to Karl and Olof about 
• FC at end of SEC
• Gain resistor package
• Network access
• N2 gas

To ask still:

• date for connection of SEC to our chamber
• collimator in front of chamber ?

No reply, remind next week, best by phone

2) Parts to be prepared in Edinburgh

• -Iris under construction, add. stop so it does not close all the way. coming along nicely. might have to increase detector distance a bit for safety. 
• spare feedthrough for cooling, to be done
• Al degrader: We have 15 um and 8 um in Edinburgh, Daid will check if light-tight. We dont have 8, but we have 10 and 6 um which should both be possible. We will prepare one 15, one 8 and on 6, possibly backups. Check what it would do for straggling if there is no hole in the middle of the foil. use 20 mm cookie cutter for circle. earth foils? Tom: Make hole, we have frames. 
• Photo diodes x2 along with degrader foil: PCB for photodiodes. extra holes for ladder. coming along. 2 diodes need a bit less than 2 space, 10 spaces in total, maybe 11. 
• Faraday cup SHV to SMA converter: Peter to order
• Window port for front of chamber? Peter to draw
• Extra ribbon cables are needed? Need short cables detector to preamp. Also need long ribbon cables. Peter will make 2 new ones
• Photographs and diagrams of experimental setup -- organized clearly for beam operators during tuning: add technical drawing on elog Peter will make it coherent. Safety Folder/Risk Assessment. Safety Datasheets (Ethanol). 
• Alignment -- 2 end caps and one target ladder mount for optics reflector (8 mm diameter?) For survey people. Peter: two ends are done, drawings for S2 and target ladder mountain points not made yet. 
• Adjustable feet to be produced for radial alignment: Peter / Toby

3)Decisions / Analysis

• Alpha analysis: dE and HI detectors seem ok, We need spare cables for Detector to preamplifier. 
• Sort Routine: Tom will provide sort routine and test file to look at real data.
• Target ladder config finalization: 2 photodiodes, collimator (what size, we have 3 mm and 10mm), Beam viewer,  3 CH2 and 2 Carbon.
• Calibration of Target ladder positions. Peter / Daid
• CH2 and C sample choice. So far CH2 Target 1: 30+25 (480ug/cm2); CH2 Target 2: 16 (400 ug/cm2)

CERN-Edinburgh Liaison

• FC at end of SEC: manual
• Network access: port free.
• N2 gas ? 
• -date for connection of SEC to our chamber: week 30. October, 2nd November alignment. 
• collimator in front of chamber ?? contact Jorge Alberto about beam tuning in general (maybe add contingency high energy point) ? cc Karl

look for 4 deliveries: 2 bags gain resistors, 1 box luvac, 1 box farnell

2) Parts to be prepared in Edinburgh

• Iris: no news should be done today
• spare feedthrough for cooling, to be done.
• Al degrader: we have 2x10, 2x15 um (hole in center and light checked). 6 um still to prepare, 20 um maybe. mounts to be delivered.  
• Photo diodes x2 along with degrader foil: PCB & photodiodes here. extra holes for ladder.  drawings there. making degrader foil holder.  target ladder remade.  Preamps, amps? ask Tom. Cocknell preamp tested. 20 mv/MeV (250 MeV max). maybe borrow some more amps from miniball. 
• Faraday cup SHV to SMA converter: needs to be glued together
• Window port for front of chamber? Peter to manufacture
• Extra ribbon cables are needed? need to check with calibration. Also need long ribbon cables. will be done today/tomorrow
• Photographs and diagrams of experimental setup -- organized clearly for beam operators during tuning: add technical drawing on elog Peter will make it coherent. Safety Folder/Risk Assessment. Safety Datasheets (Ethanol).
• Alignment -- 2 end caps and one target ladder mount for optics reflector (8 mm diameter?) For survey people. Peter: two ends are done, drawings for S2 and target ladder mount points are at workshop
• Adjustable feet to be produced for radial alignment: Toby, almost done
• degrading of 12C - on elog. 

3)Decisions / Analysis

• Alpha analysis: dE and HI detectors seem ok, We need spare cables for Detector to preamplifier. 
• Sort Routine — Ruchi +Alex+Tom
• Target ladder config finalization: 2 photodiodes, collimator (what size, we have 3 mm and 10mm), Beam viewer, 3 CH2 and 2 Carbon.
• Calibration of Target ladder positions. Peter / Daid
• CH2 and C sample choice. So far CH2 Target 1: 30+25 (480ug/cm2); CH2 Target 2: 16 (400 ug/cm2). Check combination 33+1+10. New Ch2 from Paul - all will be sent here

4) CERN Presence:

• Ruchi: 22 Oct - ~20 Nov
• Mirco: 22-27 Oct, 5- ~20 Nov ?
• Claudia: 22-27 Oct, 5- ~20 Nov
• Daid: from 30 Oct
• Peter: from ~1 Nov
• Toby: from 30 Oct 
• Alex 6-11 Nov
• Tom 8- ?? Nov

Sarah: 8 - ?? Nov

Email sent to Karl and Olof about 

• FC at end of SEC
• Gain resistor package
• Network access
• N2 gas
• date for connection of SEC to our chamber
• collimator in front of chamber ?

Next week call Karl. Daid will look at old Olof emails

2) Parts to be prepared in Edinburgh

• - Iris under construction, add. stop so it does not close all the way. coming along nicely. might have to increase detector distance a bit for safety. no news
• spare feedthrough for cooling, to be done
• Al degrader: We have 15 um and 6&10 um in Edinburgh, Daid will check if light-tight. We will prepare one 15, one 10 and on 6, possibly backups. Make hole, we have frames. more frames
• Photo diodes x2 along with degrader foil: PCB & photodiodes here. extra holes for ladder. coming along. 2 diodes need a bit less than 2 space, 10 spaces in total, maybe 11. drawings there. Preamps, amps? ask Tom
• Faraday cup SHV to SMA converter: Peter on order
• Window port for front of chamber? Peter to manufacture
• Extra ribbon cables are needed? need to check with calibration. Also need long ribbon cables. Peter will make 2 new ones. Peter has bits
• Photographs and diagrams of experimental setup -- organized clearly for beam operators during tuning: add technical drawing on elog Peter will make it coherent. Safety Folder/Risk Assessment. Safety Datasheets (Ethanol). send to Karl
• Alignment -- 2 end caps and one target ladder mount for optics reflector (8 mm diameter?) For survey people. Peter: two ends are done, drawings for S2 and target ladder mountain points not made yet. 
• Adjustable feet to be produced for radial alignment: Peter / Toby

3)Decisions / Analysis

• Alpha analysis: dE and HI detectors seem ok, We need spare cables for Detector to preamplifier. 
• Sort Routine — ask Tom
• Target ladder config finalization: 2 photodiodes, collimator (what size, we have 3 mm and 10mm), Beam viewer, We need to verify how many positions we have. 3 CH2 and 2 Carbon.
• Calibration of Target ladder positions. Peter / Daid
• CH2 and C sample choice. So far CH2 Target 1: 30+25 (480ug/cm2); CH2 Target 2: 16 (400 ug/cm2). Check combination 33+1+10. New Ch2 from Paul —> Check thickness asap!

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 - snoop -d bge1 log following MVME CPU reset

Attachment 2 - VME CPU system console

Fixed MVME2354 CPU RPC timeout when mounting MIDAS filesytem (see attachment 2)
by changing Sun workstation name services configuration file /etc/nsswitch.conf
to remove dns i.e. from

hosts: files dns
ipnodes: files dns

to

hosts: files
ipnodes: files

*Why* this works is a good question ...

MIDAS DAQ configuration files from directories w26:/MIDAS/experiments/daq
and w26:/MIDAS/TapeServer/SunOS

This log entry contains a basic instruction on how to operate the Julabo liquid flow chiller.

There are 5 buttons (left to right): Up/Down, Enter, 1/0.  

To toggle power to the device, use 1/0 (on/off).  NB: This only turns the electronics on, and does not initiate circulation / cooling.

When switched on, it will display sequentially some basic information sequentially.  One may generally ignore these, and wait until it displays the current temperature.

To adjust or check the set point, tap either of Up/Down.  To change the set point, press and hold either up or down.  Release the button when the desired set point is reached, 
and tap up/down to do the fine tuning.

Once the desired set point is entered, the display will return to the current temperature reading.

To turn on circulation / chilling, press and hold Enter (the down/left facing arrow).  One needs to hold this button several seconds.  It is obvious when it begins to operate, as 
it will make more sounds, and additionally the Snowflake LED indicator should turn on (unless the current temperature is lower than the set point, it may simply flash briefly).

The set point can be adjusted while the circulation / chilling is on, as above.

To turn the circulation / chilling off, hold down Enter again for several seconds.

Best to raise the set point to ~20 degrees and wait for it to reach the value, before turning off circulation, and finally the device (0 button).

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

While changing HI degrader foil to 10um Al, the E detector was investigated, due to previously observed alpha punch-through.
On visual inspection, the E detector appeared to be 1mm in thickness, leading us to believe that instead we were not fully depleting the detector.

The bias supply was investigated, and was found to be supplying a lower voltage (on all channels) than was shown on the display (14V -> 2V in reality, 350V -> 60V in reality).
The bias module was replaced, and the faulty module marked as such.

As a result of this change, the configuration of the detector bias channels has been altered (as ch 2 on new module can't supply >100V).

-------------

New Configuration:

Detector    :  Voltage :  Leakage Current
Ch 1 -  dE :    40 V    :        0.92 uA
Ch 2 -   HI :    14 V    :        2.52 uA
Ch 3 -    E :   350 V   :        3.91 uA

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)

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.

Some notes on the broken gate valve that should go between SEC and our chamber at XT03.

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.

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.

Note that the removal of the supressor reqires the special allen key.

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).