MOM Commissioning Requests [Ken mail ]•Target:   - Timing   - Turn-key system for target operation

•Beam counters:   - Remove BC1   - Readout BC2

•Electronics:   - Repair/return NIM crate   - Start programme of checking NIM modules   - Buy some NIM modules as spares

•Magnets:   - Leak in Q6 action on Q5 too ???   - Power supplies: Q1 and Q2    - Slow controls

•CTRL over quadrupoles (from MICE CR)

Craig, Kenny,Well, it went well on Saturday night, but, I blew up another NIM crate.  I'd 'borrowed' it from Dave Sankey's lab.  I'll email him in a moment, but, it seems clear that we need a testing programme to see where we are.Craig, is there a NIM crate that we can replace the one lent by Dave?

I'd have two requests:

 * Craig: could we discuss a testing plan to establish which of the          modules is good?

 * Paul: Could you make a reasonable list of modules that we should         buy as spares and perhaps to replace some of the ancient         modules that we currently rely on.

         Also, Ash is happy to organise a cupboard of connectors         etc.  Perhaps you and Craig could help him with the list         of things.

Kenny, James, Adam,

The beam counter worked OK on Saturday night.  It saw particles, but wasswamped by background.  So, I think what we have to do is:

 * Remove BC1 -- its only material in the beam!

 * Readout BC2: Kenny and Adam will be coming to RAL Wednesday-Friday                to make sure this happens (I think).

K

Dear All,

Firstly, Paul and Paul did a very good job Saturday/Sunday.  It was a veryimportant, and successful, run and both Pauls rearranged there schedules atthe last minute to make it possible.

Of course, the run threw up some issues which we should try and address:

 * Timing: we need a programmable delay, I think.  The reason is that           the ISIS timing signal seems to be just on the edge of what           the target electronics can cope with.

           Perhaps we should buy a programmable unit.  I think the           specification should be driven by Steve G in consultation           with Paul S and ISIS.  Is that reasonable?

 * Operation:  The target operation was pretty smooth, a credit to           those who put it together.  However, its an 'experts only'           system at the moment.  Should we try and get some effort           to help make it a 'turn key' system?

Congratulations!

K

Marco, Kevin, Malcolm,

I attach the spread sheet I made out of the BC1 and GVA2 counts.  Its Exceland the empty boxes did not have a number recorded.

Seems clear to me that BC1 sees the target, but is swamped by noise.  Ithink we should take it out at the next opportunity.

Hope this is explicable and can be archived with the rest of the stuff.

K

MICE running: 29/30 March 2008

Current: D1 (A) Current: D2 (A) Comment BC1 GVA20 0 Target: in beam and pulsing 2322 43

100 0 Target: in beam and pulsing 1864200 0 Target: in beam and pulsing 2260 1200 0 Target: in beam and pulsing 2297300 0 Target: in beam and pulsing 2358 0300 0 Target: in beam and pulsing 2011400 0 Target: in beam and pulsing 2202 0400 0 Target: in beam and pulsing 2317400 40 Target: in beam and pulsing 2397 3400 40 Target: in beam and pulsing 1400 80 Target: in beam and pulsing 2400 80 Target: in beam and pulsing 2472 1400 160 Target: in beam and pulsing 2462 225400 160 Target: in beam and pulsing 214400 170 Target: in beam and pulsing 311400 170 Target: in beam and pulsing 2536 353400 180 Target: in beam and pulsing 159400 180 Target: in beam and pulsing 170400 170 Target: in beam and pulsing 419400 170 Target: in beam and pulsing 378400 170 Target out and pulsiing 49 0

Counts in 10 actuations (gate length ~4 ms)Conditions

GVA2 counts

0

100

200

300

400

500

0 20 40 60 80 100 120 140 160 180 200

D2 c ur r ent (A )

A successful run on Saturday night -- but a few issues:

 * Water leak in Q6:  This seems to be in the outer (downstream)   manifold on the downstream end of the magnet.  On the manifold   it is at the bottom right as you face the magnet looking upstream.

   Perhaps its as simple as tightening a jubilee clip, but I fear   it will require removing at least one mirror plate.  In this   case we'll have to discuss removing the beam monitor or at   least replacing the aluminium cover.

 * Power supplies for Q1 and Q2:  We need to continue to chase   Dan Fysik over this while Graham is on holiday.  Who should do   this, is it Martin or Steve -- or someone else?

 * The slow controls for the magnets worked fine, but we need to fix   a few gremlins and make a write up for the control room.  I wonder   if Pete Owens could spend a little time at RAL to work on this in   advance of the shift on Wednesday evening.

 * Network to the remaining power supplies should be expedited now.   Who should drive this -- Steve or Adrian?

Hi KenSounds like a successful weekend as far as magnet power converters areconcerned.

I have spoken to Martin this morning and he tells me that Q4, 5 & 6 ranup manually without the need for modifications. Martin has agreed tochase Danfysik regarding Q1 & 2.

Regarding slow controls, these are operational for Q1 to 3 and D1 & 2.Last week I asked Hickmans to install the serial cables to Q4 to Q9power converter racks from the control rack, this will then enable allmagnets to be remotely controlled.

When is the next key date to have all power converters commissioned andfully operational?

From my understanding the next area to focus on is the Decay Solenoid.This has now been rewired in its final position but requiresrecommissioning and the addition of control for CV1/2 by the Daresburysupplied control system.

Regards

Graham

ConclusionsWATER leak on Q6 to be fixed for the time being no action (requires access to DSA with crane!)NB: Q5 has the same “bad practice” rubber connection (comment by John Govans as unsafe), so we need to think about proper connections with stiff pipes Next RunsWEDNESDAY 18:00 8:00 AM (thursday)FRIDAY “ “ “ “ (saturday)

~4000 actuations left

• Plan 1) re-establish target operations2) use: BM1, GVA1, BC2, BM2, Cherenkov (?) 3) D1+D24) D1+D2 + Q45) D1+D2 + Q56) D1+D2 + Q4 + Q5 7) Take Data (DAQ) during these operations

• Survey: after 3600 actuations (@50/64~1Hz 6hrs)

• people needed - Paul & Paul for the target - Kevin & myself on the magnets - IC for beam monitors (Kenny, James, Ken …) - would be very nice to have Geneva for DAQ (J.Seb.? … )