Agreement between the DEGAS/NUSTAR and AGATA collaborations regarding the use of DEGAS AGATA-type triple cluster detectors

Draft 2016-08-29

1. Background

The TDR for the DEGAS Ge array for decay spectroscopy at NUSTAR/DESPEC (approved by FAIR July 2015) includes in its second phase replacing some of the EUROBALL cluster detectors by five AGATA-type triple cluster detectors (ATCs) and associated equipment (electronics, infrastructure, DAQ) fully compatible with AGATA standard. The procurement of such AGATA-type detectors is made by the individual partners of the DEGAS collaboration and will in due time be transferred to FAIR as part of national in-kind contributions. In order to maximize the scientific output from this investment it is foreseen by the DESPEC collaboration that the equipment can be made available for AGATA experiments before the FAIR beams are ready for experiments and laterwhen the detectors are not used at DESPEC. In order to ensure that the DEGAS ATCs fulfill the AGATA specifications they should be tested (CAT) by the AGATA collaboration upon delivery from the manufacturer as individual single-crystal detectors as well as after assembly into the proper AGATA triple cryostat.

2. Points of agreement

2.1 The sales contract with MIRION TECHNOLOGIES (CANBERRA) SAS Canberra France for each DEGAS detector has to include the standard AGATA prorated warranty scheme negotiated with the company.

2.2 Customer acceptance test (CAT) of individual germanium detectors will be performed by the AGATA collaboration using AGATA test cryostats (without cross-talk test).

2.3 The assembly of the triple- cluster detectors will be responsibility of the DEGAS collaboration.[DG1]

2.4 Operational costs (OC) will be paid for the DEGAS detectors during the period of use of the detectors at AGATA according to the MOU (in the case of Sweden the costs of one DEGAS ATC would be already covered by the present amount of OC defined in the AGATA MOU).Financial details for period 2016-2020 are given in Annex.

2.5 Maintenance of the DEGAS detectors will be performed by the AGATA collaboration when they are used at AGATA.They will be subject to the same routines for safe handling, use and documentation as for dedicated AGATA detectors.

2.6 The AGATA collaboration takes full responsibility for the detectors during their use by the AGATA collaboration and that they are returned to the DEGAS

partner/FAIR fully operational. i.e. fulfilling all required detector specifications (including a aging factors of 10%(20%) per year for the core(segment) resolutions) at the date required by the DEGAS partner/FAIR.

3 Signatures

Date:
Location:
By:______
Giacomo de Angelis
Chair AGATA Steering Committee / Date:
Location:
By:______
NN
DEGAS/NUSTAR representative
Or DEGAS partner[GJD2]

Annex

AGATA operational costs of each partner comprises a fixed share of 2% and a share proportional to the number of ATC (numATC) in the array. It writtes as follows:

OC (%)= 2 % + 3.8% x numATC

The total AGATA operational costs vary each year as given in table 1. DEGAS operational costs correspond to the product of the total AGATA operational costs times OC (%) calculated with the number of ATC provided by DEGAS.

NB: one capsule and associated equipment is 1/3 of ATC

Table 1: Total AGATA operational costs per year over the 2016-2020 period

Year / 2016 / 2017 / 2018 / 2019 / 2020
Total AGATA OC / 397,100 / 446,100 / 526,600 / 546,400 / 628,300

Table 1: Total AGATA operational costs per year over the 2016-2020 period

[DG1]Here it is not specified that when assembled the AGATA coll has to test the full ATC...

In contradiction with the above sentence in red??

Not discussed at ASC

[GJD2]To be discussed within DESPEC and DEGAS